From nobody Fri Feb 1 14:58:06 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 88B59130EE0; Fri, 1 Feb 2019 14:58:05 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -0.997 X-Spam-Level: X-Spam-Status: No, score=-0.997 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, FREEMAIL_REPLY=1, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, UNPARSEABLE_RELAY=0.001, URIBL_BLOCKED=0.001] autolearn=no autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id UpMk9v-yLavj; Fri, 1 Feb 2019 14:58:04 -0800 (PST) Received: from mail-oi1-x235.google.com (mail-oi1-x235.google.com [IPv6:2607:f8b0:4864:20::235]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 8CF22130EBE; Fri, 1 Feb 2019 14:58:03 -0800 (PST) Received: by mail-oi1-x235.google.com with SMTP id y1so7145609oie.12; Fri, 01 Feb 2019 14:58:03 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:in-reply-to:references:mime-version:date:message-id:subject:to :cc; bh=jNiSMhRyQfCtD8y8LnxexF8cCqQi3bIhNLPRLgc9/cQ=; b=c72AImIZr8udp6iHtVS0lfwn5dncyRrE6PLbV3XE6D2bVjN49y31aNUFLitwKODScy CBgDGsUJpZj1VDol9COEgDo5uByCuWKIYhaONyHTtZtJbG2hX3/EusMBmCf++EM8Gvra U4nPRhe+Bj6sofJbeS7k/ci0FWU1oeneTXRitNIYnuf4gqcE4Ky4MqKyNlhVrTwr+RIV zqp8RWzKBhkZBapTm7XGmPBSiWyNE9vEVb7slhatatxgFdGHFVxUDDEfPipQhTDftUBp 3OrTpZxMx9AAoaaPMzcJthrEM0RlCCNMhRdbu/7QuqC7G9g1PYAsaZ88Nz3dHnwc8Ul7 Bt2g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:in-reply-to:references:mime-version:date :message-id:subject:to:cc; bh=jNiSMhRyQfCtD8y8LnxexF8cCqQi3bIhNLPRLgc9/cQ=; b=LlkeZ3tsAbbUKCJft1DZb0UfHANkl2cA+FWWflgNsNlA+4f07rsLLqvSg1CBhSjdtV HCuZRiW+TAotj7IRcpn23sPSfmgAJcGfV1JEJJg0UbrAEKCDBgKb/tEIG4QtUFMfOk9k htfeTWEqmaiVoVIBfDJxKUw8rEwhXA63wjZy1L5i1C5lmmdsqHwyR7jelQQmh9fjEABo /mYJs605S2WmMPmimtd9sRKKpgbWTfiouRhj3KoClTD3xY34Fp3AXedeQHwV/zwD4kHt IfuFfIqw64hg1hqMkQLy/FghtcFEWld6j9JehUyfTWSl3ewO341Z4CUgRqeUsKGSqUHF 0TbQ== X-Gm-Message-State: AJcUukc/TGo7hl/F/hfBL9rlwWrazh19QEnAGKGLAR5Gz1aWAF1HgYfs XGjLJ/x5Jz455Hm9nHLFpUsK48xCcbUxLYJ9mDs= X-Google-Smtp-Source: AHgI3IbS8OvZx/UN//HSFOsxcfnwE2Etg95J+N04Lkw6gWmXcxE6OVtRC7/M/joWVBEgiVFcsdql0VxqDoKbGPUB5zA= X-Received: by 2002:aca:1b13:: with SMTP id b19mr19413348oib.215.1549061882830; Fri, 01 Feb 2019 14:58:02 -0800 (PST) Received: from 1058052472880 named unknown by gmailapi.google.com with HTTPREST; Fri, 1 Feb 2019 23:58:02 +0100 From: Alvaro Retana In-Reply-To: References: <154508592591.4271.12094992121838897393.idtracker@ietfa.amsl.com> MIME-Version: 1.0 Date: Fri, 1 Feb 2019 23:58:02 +0100 Message-ID: To: Vishnu Pavan Beeram Cc: mpls-chairs@ietf.org, IETF MPLS List , draft-ietf-mpls-rsvp-shared-labels@ietf.org, The IESG Content-Type: multipart/alternative; boundary="00000000000042e5000580dd13c5" Archived-At: Subject: Re: [mpls] Alvaro Retana's Discuss on draft-ietf-mpls-rsvp-shared-labels-07: (with DISCUSS and COMMENT) X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 01 Feb 2019 22:58:06 -0000 --00000000000042e5000580dd13c5 Content-Type: text/plain; charset="UTF-8" Just cleared the DISCUSS. Thanks! Alvaro. On January 31, 2019 at 8:45:26 PM, Vishnu Pavan Beeram ( vishnupavan@gmail.com) wrote: Thanks! We published an update as suggested ( https://www.ietf.org/rfcdiff?url2=draft-ietf-mpls-rsvp-shared-labels-09). --00000000000042e5000580dd13c5 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable =
Just cleared the DISCUSS.

Thanks!

Alvaro.

On January= 31, 2019 at 8:45:26 PM, Vishnu Pavan Beeram (vishnupavan@gmail.com) wrote:

--00000000000042e5000580dd13c5-- From nobody Fri Feb 8 21:29:16 2019 Return-Path: X-Original-To: mpls@ietf.org Delivered-To: mpls@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 6DED913115A; Fri, 8 Feb 2019 21:29:09 -0800 (PST) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: Cc: mpls@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 6.91.0 Auto-Submitted: auto-generated Precedence: bulk Reply-To: mpls@ietf.org Message-ID: <154969014942.31116.6919072251920174620@ietfa.amsl.com> Date: Fri, 08 Feb 2019 21:29:09 -0800 Archived-At: Subject: [mpls] I-D Action: draft-ietf-mpls-ri-rsvp-frr-05.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 09 Feb 2019 05:29:10 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Multiprotocol Label Switching WG of the IETF. Title : Refresh Interval Independent FRR Facility Protection Authors : Chandra Ramachandran Ina Minei Dante Pacella Tarek Saad Filename : draft-ietf-mpls-ri-rsvp-frr-05.txt Pages : 24 Date : 2019-02-08 Abstract: RSVP-TE relies on periodic refresh of RSVP messages to synchronize and maintain the LSP related states along the reserved path. In the absence of refresh messages, the LSP related states are automatically deleted. Reliance on periodic refreshes and refresh timeouts are problematic from the scalability point of view. The number of RSVP- TE LSPs that a router needs to maintain has been growing in service provider networks and the implementations should be capable of handling increase in LSP scale. RFC 2961 specifies mechanisms to eliminate the reliance on periodic refresh and refresh timeout of RSVP messages, and enables a router to increase the message refresh interval to values much longer than the default 30 seconds defined in RFC 2205. However, the protocol extensions defined in RFC 4090 for supporting fast reroute (FRR) using bypass tunnels implicitly rely on short refresh timeouts to cleanup stale states. In order to eliminate the reliance on refresh timeouts, the routers should unambiguously determine when a particular LSP state should be deleted. Coupling LSP state with the corresponding RSVP-TE signaling adjacencies as recommended in RFC 8370 will apply in scenarios other than RFC 4090 FRR using bypass tunnels. In scenarios involving RFC 4090 FRR using bypass tunnels, additional explicit tear down messages are necessary. Refresh-interval Independent RSVP FRR (RI-RSVP-FRR) extensions specified in this document consists of procedures to enable LSP state cleanup that are essential in scenarios not covered by procedures defined in RSVP-TE Scaling Recommendations. Hence, this document updates the procedures defined in RFC 4090 to support Refresh-Interval Independent RSVP (RI-RSVP) capability specified in RFC 8370. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-mpls-ri-rsvp-frr/ There are also htmlized versions available at: https://tools.ietf.org/html/draft-ietf-mpls-ri-rsvp-frr-05 https://datatracker.ietf.org/doc/html/draft-ietf-mpls-ri-rsvp-frr-05 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-mpls-ri-rsvp-frr-05 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ From nobody Sat Feb 9 03:53:35 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 5CFBD128D52 for ; Sat, 9 Feb 2019 03:53:33 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.999 X-Spam-Level: X-Spam-Status: No, score=-1.999 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=it.uc3m.es Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id d-eT13DAVWQb for ; Sat, 9 Feb 2019 03:53:30 -0800 (PST) Received: from mail-wm1-x332.google.com (mail-wm1-x332.google.com [IPv6:2a00:1450:4864:20::332]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 38849128CF2 for ; Sat, 9 Feb 2019 03:53:30 -0800 (PST) Received: by mail-wm1-x332.google.com with SMTP id y185so9262256wmd.1 for ; Sat, 09 Feb 2019 03:53:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=it.uc3m.es; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=X3bP0Mp5+5cTT8UV5Lr9IqT9C4O287+RL1oOIB7XsY0=; b=OmZJhU//ArG3I/OIdXOqqf6ND98wNKoHRBLbkWiSHbmidl9CpjUIPhO5phdJ0S/V6g QRUiZ/3zL8My8HwUUIq+v0c2C5GarsA56zrUK1JFwjH4z9FfZOYSTG+pencYuJjLpPWE Dsu8iilSEwva9c6y19BNO7M2OV0k+XIkXt/Xq3JYvHPI1b4grvK3UP9AnpVTnmayLE9U Y9MnEe38OiX++G19xjGy1x7ZnFDJq8j53k2vCxXkUE3FYdnv7BG0Adey80e4p+CxVcJL fFktQnuDAJLQPKepEF0rQ+k2OvliyrAp4BEU9GibnPlyirYqO03wYyrl7p6fftIii7fm 1K+w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=X3bP0Mp5+5cTT8UV5Lr9IqT9C4O287+RL1oOIB7XsY0=; b=EkiAyLR2t+w1hMuzMVd1VSphsqh+R9Tg9FZA6RbNWISGQ7E1ScqTdZKWv+lAb4deDu qoQY6tkhFf6HAmTnfCrL1XxkUL6zSKvmjFyWbmvmovtI4V2zVI+wxoay7+nlqKB9tyvm nStW/0fDjqsuDX1eijnB+LTDbLkRxq0g2llGB8qQX7sPThl6CSKaORhuqCiCFxVmBfuS F6BawZWH/IgVfjgIEuDolVVZ7KDtXGGh2V02DIXYfsSGQWMXyOLX18n8fA5qHi7+wSVC 93nG8F2PuNMnRYS26em4iiddiXcw7DMa0n6ItavyjqdAqZnFzzyttdXN0LgsXabroRkM WoNA== X-Gm-Message-State: AHQUAuZzVuWpFSpp2gkt7NKwyI9W3JCF/HOCf6kj1UqXFEqMZGlGWdJA kJu4g4QixJT3lINdCE3WupWwUbX+fxii3QYEcuEghjX5 X-Google-Smtp-Source: AHgI3IZuHbsbJA+Ram/FQ7mhErpmEcfwV0U6mLL0OuoqFUfmDFLSvQtBkLEVFXCzjDj+p3sZ1hHrXrt7d/IWR/wO7SA= X-Received: by 2002:a5d:5492:: with SMTP id h18mr21480627wrv.322.1549713208005; Sat, 09 Feb 2019 03:53:28 -0800 (PST) MIME-Version: 1.0 References: <1bf361f0-1987-ce4e-0671-d46886898e44@pi.nu> <32e0c032-1c20-2bc1-30c3-23b3f7fb6901@pi.nu> In-Reply-To: From: CARLOS JESUS BERNARDOS CANO Date: Sat, 9 Feb 2019 12:53:11 +0100 Message-ID: To: mpls@ietf.org Content-Type: multipart/alternative; boundary="000000000000447c8b058174b92d" Archived-At: Subject: Re: [mpls] working group last call on draft-ietf-mpls-rmr X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 09 Feb 2019 11:53:33 -0000 --000000000000447c8b058174b92d Content-Type: text/plain; charset="UTF-8" Hi, Support. I think the document is ready to move forward. Carlos On 2019-01-15 16:10, Loa Andersson wrote: > > Working Group, > > > > This is to initiate a two week working group last call on > > draft-ietf-mpls-rmr. > > > > Please send your comments to the mpls wg mailing list (mpls@ietf.org). > > > > There are no IPR disclosures directly against draft-ietf-mpls-rmr, but > > an IPR (#2661) were disclosed against the individual document that we > > adopted as a working group document. > > > > Both authors have stated on the working group mailing list that they > > are unaware of any non-disclosed IPRs that relates to this document. > > > > This working group last call ends Wednesday January 30, 2019. > > > > /Loa > > mpls wg co-chair > > -- > > Loa Andersson email: loa@pi.nu > Senior MPLS Expert > Bronze Dragon Consulting phone: +46 739 81 21 64 > --000000000000447c8b058174b92d Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi,

Support. I think the doc= ument is ready to move forward.

Carlos
<= br>
On 2019-01-15 16:10, Loa Andersson wrote:
> Working Group,
>
> This is to initiate a two week working group last call on
> draft-ietf-mpls-rmr.
>
> Please send your comments to the mpls wg mailing list (mpls@ietf.org).
>
> There are no IPR disclosures directly against draft-ietf-mpls-rmr, but=
> an IPR (#2661) were disclosed against the individual document that we<= br> > adopted as a working group document.
>
> Both authors have stated on the working group mailing list that they > are unaware of any non-disclosed IPRs that relates to this document. >
> This working group last call ends Wednesday January 30, 2019.
>
> /Loa
> mpls wg co-chair

--

Loa Andersson=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0= =C2=A0 =C2=A0 =C2=A0 email: loa@pi.nu
Senior MPLS Expert
Bronze Dragon Consulting=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0pho= ne: +46 739 81 21 64
--000000000000447c8b058174b92d-- From nobody Sat Feb 9 04:30:39 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 7887C12E7C1 for ; Sat, 9 Feb 2019 04:30:37 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.001 X-Spam-Level: X-Spam-Status: No, score=-2.001 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=telefonica.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id R52t-SI9NgtG for ; Sat, 9 Feb 2019 04:30:34 -0800 (PST) Received: from EUR02-HE1-obe.outbound.protection.outlook.com (mail-eopbgr10092.outbound.protection.outlook.com [40.107.1.92]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id D65D6128CF2 for ; Sat, 9 Feb 2019 04:30:33 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=telefonica.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=aZ9jxBgBfjBri0Xsh7pKBM2bKfmd2NiPjKNh0q4PeqQ=; b=eHDJYnC0Q2+u8aHguP7Am8JZh3RQcQkJFKASqVoyVme/1mZUkY8A/FeJOh+Ww7reEDUnCaAuo4HjOBzosVxpAvr7HjTJjrUWRJVWndiVD49haDTH5M8f6GgmKQ6jk4rp4YG9U2frXnwlBi52VCn0ZndxFPp63Pov8Y05hU3TbBU= Received: from DB3PR0602MB3788.eurprd06.prod.outlook.com (52.134.70.148) by DB3PR0602MB3676.eurprd06.prod.outlook.com (52.134.71.28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1601.22; Sat, 9 Feb 2019 12:30:30 +0000 Received: from DB3PR0602MB3788.eurprd06.prod.outlook.com ([fe80::686f:4013:7aea:f279]) by DB3PR0602MB3788.eurprd06.prod.outlook.com ([fe80::686f:4013:7aea:f279%5]) with mapi id 15.20.1601.016; Sat, 9 Feb 2019 12:30:30 +0000 From: "Diego R. Lopez" To: "mpls@ietf.org" Thread-Topic: working group last call on draft-ietf-mpls-rmr Thread-Index: AQHUrKnTKcqiU6g6DUWKNE4hIXOmXKXXaF0AgAATCWCAACKFgA== Date: Sat, 9 Feb 2019 12:30:30 +0000 Message-ID: <5B5007CC-F022-4BE6-B2B0-1D897F682BFF@telefonica.com> References: <1bf361f0-1987-ce4e-0671-d46886898e44@pi.nu> <32e0c032-1c20-2bc1-30c3-23b3f7fb6901@pi.nu> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Microsoft-MacOutlook/10.10.6.190114 authentication-results: spf=none (sender IP is ) smtp.mailfrom=diego.r.lopez@telefonica.com; x-originating-ip: [79.146.102.69] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1; DB3PR0602MB3676; 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bCBvciBlbnRpdHkgbmFtZWQgYWJvdmUuIElmIHRoZSByZWFkZXIgb2YgdGhpcyBtZXNzYWdlIGlz IG5vdCB0aGUgaW50ZW5kZWQgcmVjaXBpZW50LCB5b3UgYXJlIGhlcmVieSBub3RpZmllZCB0aGF0 IGFueSBkaXNzZW1pbmF0aW9uLCBkaXN0cmlidXRpb24gb3IgY29weWluZyBvZiB0aGlzIGNvbW11 bmljYXRpb24gaXMgc3RyaWN0bHkgcHJvaGliaXRlZC4gSWYgeW91IGhhdmUgcmVjZWl2ZWQgdGhp cyB0cmFuc21pc3Npb24gaW4gZXJyb3IsIGRvIG5vdCByZWFkIGl0LiBQbGVhc2UgaW1tZWRpYXRl bHkgcmVwbHkgdG8gdGhlIHNlbmRlciB0aGF0IHlvdSBoYXZlIHJlY2VpdmVkIHRoaXMgY29tbXVu aWNhdGlvbiBpbiBlcnJvciBhbmQgdGhlbiBkZWxldGUgaXQuDQoNCkVzdGEgbWVuc2FnZW0gZSBz ZXVzIGFuZXhvcyBzZSBkaXJpZ2VtIGV4Y2x1c2l2YW1lbnRlIGFvIHNldSBkZXN0aW5hdMOhcmlv LCBwb2RlIGNvbnRlciBpbmZvcm1hw6fDo28gcHJpdmlsZWdpYWRhIG91IGNvbmZpZGVuY2lhbCBl IMOpIHBhcmEgdXNvIGV4Y2x1c2l2byBkYSBwZXNzb2Egb3UgZW50aWRhZGUgZGUgZGVzdGluby4g U2UgbsOjbyDDqSB2b3NzYSBzZW5ob3JpYSBvIGRlc3RpbmF0w6FyaW8gaW5kaWNhZG8sIGZpY2Eg bm90aWZpY2FkbyBkZSBxdWUgYSBsZWl0dXJhLCB1dGlsaXphw6fDo28sIGRpdnVsZ2HDp8OjbyBl L291IGPDs3BpYSBzZW0gYXV0b3JpemHDp8OjbyBwb2RlIGVzdGFyIHByb2liaWRhIGVtIHZpcnR1 ZGUgZGEgbGVnaXNsYcOnw6NvIHZpZ2VudGUuIFNlIHJlY2ViZXUgZXN0YSBtZW5zYWdlbSBwb3Ig ZXJybywgcm9nYW1vcy1saGUgcXVlIG5vcyBvIGNvbXVuaXF1ZSBpbWVkaWF0YW1lbnRlIHBvciBl c3RhIG1lc21hIHZpYSBlIHByb2NlZGEgYSBzdWEgZGVzdHJ1acOnw6NvDQo= From nobody Sat Feb 9 04:45:29 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id D190E1311AF for ; Sat, 9 Feb 2019 04:45:26 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.899 X-Spam-Level: X-Spam-Status: No, score=-1.899 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id LKt15gV8za06 for ; Sat, 9 Feb 2019 04:45:24 -0800 (PST) Received: from pipi.pi.nu (pipi.pi.nu [83.168.239.141]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 1004912D829 for ; Sat, 9 Feb 2019 04:45:24 -0800 (PST) Received: from [192.168.1.20] (unknown [119.94.174.90]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: loa@pi.nu) by pipi.pi.nu (Postfix) with ESMTPSA id DB1B818015A3; Sat, 9 Feb 2019 13:45:20 +0100 (CET) To: "Diego R. Lopez" , "mpls@ietf.org" References: <1bf361f0-1987-ce4e-0671-d46886898e44@pi.nu> <32e0c032-1c20-2bc1-30c3-23b3f7fb6901@pi.nu> <5B5007CC-F022-4BE6-B2B0-1D897F682BFF@telefonica.com> From: Loa Andersson Message-ID: Date: Sat, 9 Feb 2019 20:45:14 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.5.0 MIME-Version: 1.0 In-Reply-To: <5B5007CC-F022-4BE6-B2B0-1D897F682BFF@telefonica.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit Archived-At: Subject: Re: [mpls] working group last call on draft-ietf-mpls-rmr X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 09 Feb 2019 12:45:27 -0000 Diego, We have had a bit too few responses to the wglc, so I'm holding off on closing the wglc. So your comments is very welcome. I'm also waiting for a RTG dir Early review before closing the the wglc. I hope to close the wglc end of the week. /Loa On 2019-02-09 20:30, Diego R. Lopez wrote: > Hi, > > I know it is a little bit beyond the end date, but I want to express my support for draft-ietf-mpls-rmr. I think it is ready to progress to its publication. > > Be goode, > > On 2019-01-15 16:10, Loa Andersson wrote: > Working Group, > > This is to initiate a two week working group last call on > draft-ietf-mpls-rmr. > > Please send your comments to the mpls wg mailing list (mpls@ietf.org). > > There are no IPR disclosures directly against draft-ietf-mpls-rmr, but > an IPR (#2661) were disclosed against the individual document that we > adopted as a working group document. > > Both authors have stated on the working group mailing list that they > are unaware of any non-disclosed IPRs that relates to this document. > > This working group last call ends Wednesday January 30, 2019. > > /Loa > mpls wg co-chair > > -- > > > Loa Andersson email: loa@pi.nu > Senior MPLS Expert > Bronze Dragon Consulting phone: +46 739 81 21 64 > > > > ________________________________ > > Este mensaje y sus adjuntos se dirigen exclusivamente a su destinatario, puede contener información privilegiada o confidencial y es para uso exclusivo de la persona o entidad de destino. Si no es usted. el destinatario indicado, queda notificado de que la lectura, utilización, divulgación y/o copia sin autorización puede estar prohibida en virtud de la legislación vigente. Si ha recibido este mensaje por error, le rogamos que nos lo comunique inmediatamente por esta misma vía y proceda a su destrucción. > > The information contained in this transmission is privileged and confidential information intended only for the use of the individual or entity named above. If the reader of this message is not the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this transmission in error, do not read it. Please immediately reply to the sender that you have received this communication in error and then delete it. > > Esta mensagem e seus anexos se dirigem exclusivamente ao seu destinatário, pode conter informação privilegiada ou confidencial e é para uso exclusivo da pessoa ou entidade de destino. Se não é vossa senhoria o destinatário indicado, fica notificado de que a leitura, utilização, divulgação e/ou cópia sem autorização pode estar proibida em virtude da legislação vigente. Se recebeu esta mensagem por erro, rogamos-lhe que nos o comunique imediatamente por esta mesma via e proceda a sua destruição > _______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls > -- Loa Andersson email: loa@pi.nu Senior MPLS Expert Bronze Dragon Consulting phone: +46 739 81 21 64 From nobody Sat Feb 9 17:46:15 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 9183B130DDA; Sat, 9 Feb 2019 17:46:14 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2 X-Spam-Level: X-Spam-Status: No, score=-2 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ZaPr6wPolhYI; Sat, 9 Feb 2019 17:46:12 -0800 (PST) Received: from mail-ot1-x335.google.com (mail-ot1-x335.google.com [IPv6:2607:f8b0:4864:20::335]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 5CFCC12F295; Sat, 9 Feb 2019 17:46:12 -0800 (PST) Received: by mail-ot1-x335.google.com with SMTP id z19so8117983otm.2; Sat, 09 Feb 2019 17:46:12 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=dvZ/ltsMp6f9ZbBfIm/5xAkyhJp7w3q5JVCa69Ya95I=; b=rnDWPIz4r2yyuxU/ZQGa0gPJGDMGeCjevOSMtWO5ENM0rONZCBNMSX0NCXfxotKxMf cU7Rnp0f06Gu7OSx+ZLKyRhRmJITvIAmh3E5f/JpiIfSCFk/+wzRFI/HeqT+Y5rqTlwi SG5/wcvP6CmhDZhpz822AN04ueWsMs23cWZ0Idu1ORfD09nuZuRH6Y14smf8ctsoUuXS mDnMk1dXlcFFPtUoXSfYpi0zIoNdbATesxTts6oJdg5Z3dXEZQSHrhrgfWUyCuyJRAOq yymd6sZb38NyJuXGZ8XXkyK7iVISvqgLIacu5lgYwRBwwFJ2sU6PTZMqymyRNvY4XJy+ N7Og== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=dvZ/ltsMp6f9ZbBfIm/5xAkyhJp7w3q5JVCa69Ya95I=; b=FGbIE8scssgLsm5LEQzu1qfW3S4kDfBK24fSoUmPLKHavwgIjjpjG/6HrulwSNuuE7 9ayjcfRedC9XlBhojvMq1hlsAS9Gl0rvCEbtEAZLH36MfuviBgMcF7tOKIb9RDzh/10Y NGuVyztqgYYE54bNJ0LEo/yM3fQlD4n9tYroZ/06r3z1U5UMLAEW1RkUdM1gL9DaM3rd NJ+JD7vJrHpc3hyjy+jJ5OFn9RXEjx9AtCLvni0UDJmJmErxpMPzXHNm1aS/38CCq66D 9TXy7QrLCMbcNxAtuztTEVlGVID+JY1K7rgvezVqYBpKsu5leE+43XmaGHsSHpEg7Tt5 A2MA== X-Gm-Message-State: AHQUAua5ZTNIOpf51E8LD756KWOv9W6x4xCF0MIgRJ6qB6kiK2VaDEJN yJQLmS2ll7AMiRIsNDdSuYgx96hY X-Google-Smtp-Source: AHgI3IbYrpNw7e1o8ITVU2rYHNqnhTUNvuLAZ8wSVbStOMDLEdjDoSO10Edo+DmYRlTtrH0Ll6DgJQ== X-Received: by 2002:a9d:73cf:: with SMTP id m15mr424694otk.126.1549763171375; Sat, 09 Feb 2019 17:46:11 -0800 (PST) Received: from ?IPv6:2600:1702:1d00:1dd0:2d12:eac9:8c69:83d0? ([2600:1702:1d00:1dd0:2d12:eac9:8c69:83d0]) by smtp.gmail.com with ESMTPSA id c17sm3019119oih.19.2019.02.09.17.46.10 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 09 Feb 2019 17:46:10 -0800 (PST) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (1.0) From: Kireeti Kompella X-Mailer: iPhone Mail (16C50) In-Reply-To: <1bf361f0-1987-ce4e-0671-d46886898e44@pi.nu> Date: Sat, 9 Feb 2019 17:46:09 -0800 Cc: "mpls@ietf.org" , "mpls-chairs@ietf.org" , "draft-ietf-mpls-rmr@ietf.org" , Deborah A Brungard Content-Transfer-Encoding: quoted-printable Message-Id: <805AC356-CCA3-4995-95C0-C60FE1A9C55F@gmail.com> References: <1bf361f0-1987-ce4e-0671-d46886898e44@pi.nu> To: Loa Andersson Archived-At: Subject: Re: [mpls] working group last call on draft-ietf-mpls-rmr X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 10 Feb 2019 01:46:15 -0000 I believe the draft is ready for publication. All comments and discussions h= ave been closed at this time. Kireeti > On Jan 15, 2019, at 00:10, Loa Andersson wrote: >=20 > Working Group, >=20 > This is to initiate a two week working group last call on > draft-ietf-mpls-rmr. >=20 > Please send your comments to the mpls wg mailing list (mpls@ietf.org). >=20 > There are no IPR disclosures directly against draft-ietf-mpls-rmr, but > an IPR (#2661) were disclosed against the individual document that we > adopted as a working group document. >=20 > Both authors have stated on the working group mailing list that they > are unaware of any non-disclosed IPRs that relates to this document. >=20 > This working group last call ends Wednesday January 30, 2019. >=20 > /Loa > mpls wg co-chair > --=20 >=20 >=20 > Loa Andersson email: loa@pi.nu > Senior MPLS Expert > Bronze Dragon Consulting phone: +46 739 81 21 64 From nobody Sat Feb 9 23:54:06 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 96C72124C04 for ; Sat, 9 Feb 2019 23:54:04 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.999 X-Spam-Level: X-Spam-Status: No, score=-1.999 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, MIME_QP_LONG_LINE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Ei5mIva_p2i4 for ; Sat, 9 Feb 2019 23:54:02 -0800 (PST) Received: from mail-pl1-x62c.google.com (mail-pl1-x62c.google.com [IPv6:2607:f8b0:4864:20::62c]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 12790130E6F for ; Sat, 9 Feb 2019 23:54:02 -0800 (PST) Received: by mail-pl1-x62c.google.com with SMTP id g9so3785680plo.3 for ; Sat, 09 Feb 2019 23:54:02 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=OlsXzo0DIaUPVLSqFryw4ql/Lsc1IT50ID2sZQ55r+8=; b=sYEN6/PVJPGtNAc3itAIVMdJ3flQSY5J/Hdxa1atpIX2c3+wB3RcY8AaLK9ZuFfC3w am/ZTZladbB/5bk2V0TBBgfjmb5+Cp50bglVj6Cah1LQf1V9R5wsV8mN40YU7Ff6+h/X nUVy6N6/nfRfkkZvbjOPo0FHTI8w4puTrQ7L5Kb0wKU392A7Ki6emi9+ZVthCEHzzoml Dm0xAztAxECVtEl3wQT7FbIJqvlupeXcBWCYMn0fPYc46KglNMmS1phiD7J0/NoK3Z8x xMVni6ZsiV5dOcnb6/mWGGUjwXTcm86RBseseAd3TLVwNX5z3Y6uBVqpf66tMklW1IYr njJQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=OlsXzo0DIaUPVLSqFryw4ql/Lsc1IT50ID2sZQ55r+8=; b=n9yPNo5O65cL6zxT7IR/gOKEq4MPXzckvpkmi0BoSDiK6eBnRwxAYhdGPne0cxt+wO PrJW8Buyr8LZrfymSqQYBxEN3UQVK/GyOia2BwJLFyyIhv2FxpwfBBe2Rpr2bIDzMncW RyeRkEzhYN2Iepyvctdkf36vgzod3L+CyXXCCEbw3meIwZiX1PExGfBypXbPCSvBDJtv j7xKQnooDTFmYXFa7Z23938Yu38RdWgYMMTK+rPWHiH+Beiy7W5tsX3y8XHcjfGHoVIS sppZMefPd3jmcm2crW/9dxEVhBAfMSm7+Sqm31hyMUOFlKKGuhUJbaoaFG2VjaBdHpJx W00A== X-Gm-Message-State: AHQUAuZHqtS58adCJv/O4eHnxpJf4CGm+nTJzntUTubKzzVyPZs4EfGi bVM2ASB6+28GKAsFv4OrOxw40qYO X-Google-Smtp-Source: AHgI3IbJR7Oyx2QDHZPFjy5wveX+qzhq0hNDIgM5MlhW/OfatsW9trTg0xZaXyZzPbpHPQLf83wCdA== X-Received: by 2002:a17:902:b68d:: with SMTP id c13mr31821308pls.102.1549785241223; Sat, 09 Feb 2019 23:54:01 -0800 (PST) Received: from [192.168.1.12] (c-73-189-13-44.hsd1.ca.comcast.net. [73.189.13.44]) by smtp.gmail.com with ESMTPSA id l10sm9499031pfc.90.2019.02.09.23.53.59 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 09 Feb 2019 23:54:00 -0800 (PST) Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (1.0) From: Jeff Tantsura X-Mailer: iPhone Mail (16C101) In-Reply-To: <5B5007CC-F022-4BE6-B2B0-1D897F682BFF@telefonica.com> Date: Sat, 9 Feb 2019 23:53:57 -0800 Cc: "mpls@ietf.org" Content-Transfer-Encoding: quoted-printable Message-Id: <22678FD0-89ED-4072-89E4-37E1FEFBD1D2@gmail.com> References: <1bf361f0-1987-ce4e-0671-d46886898e44@pi.nu> <32e0c032-1c20-2bc1-30c3-23b3f7fb6901@pi.nu> <5B5007CC-F022-4BE6-B2B0-1D897F682BFF@telefonica.com> To: "Diego R. Lopez" Archived-At: Subject: Re: [mpls] working group last call on draft-ietf-mpls-rmr X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 10 Feb 2019 07:54:05 -0000 +1 Regards, Jeff > On Feb 9, 2019, at 04:30, Diego R. Lopez wr= ote: >=20 > Hi, >=20 > I know it is a little bit beyond the end date, but I want to express my su= pport for draft-ietf-mpls-rmr. I think it is ready to progress to its public= ation. >=20 > Be goode, >=20 > On 2019-01-15 16:10, Loa Andersson wrote: > Working Group, >=20 > This is to initiate a two week working group last call on > draft-ietf-mpls-rmr. >=20 > Please send your comments to the mpls wg mailing list (mpls@ietf.org). >=20 > There are no IPR disclosures directly against draft-ietf-mpls-rmr, but > an IPR (#2661) were disclosed against the individual document that we > adopted as a working group document. >=20 > Both authors have stated on the working group mailing list that they > are unaware of any non-disclosed IPRs that relates to this document. >=20 > This working group last call ends Wednesday January 30, 2019. >=20 > /Loa > mpls wg co-chair >=20 > -- >=20 >=20 > Loa Andersson email: loa@pi.nu > Senior MPLS Expert > Bronze Dragon Consulting phone: +46 739 81 21 64 >=20 >=20 >=20 > ________________________________ >=20 > Este mensaje y sus adjuntos se dirigen exclusivamente a su destinatario, p= uede contener informaci=C3=B3n privilegiada o confidencial y es para uso exc= lusivo de la persona o entidad de destino. Si no es usted. el destinatario i= ndicado, queda notificado de que la lectura, utilizaci=C3=B3n, divulgaci=C3=B3= n y/o copia sin autorizaci=C3=B3n puede estar prohibida en virtud de la legi= slaci=C3=B3n vigente. Si ha recibido este mensaje por error, le rogamos que n= os lo comunique inmediatamente por esta misma v=C3=ADa y proceda a su destru= cci=C3=B3n. >=20 > The information contained in this transmission is privileged and confident= ial information intended only for the use of the individual or entity named a= bove. If the reader of this message is not the intended recipient, you are h= ereby notified that any dissemination, distribution or copying of this commu= nication is strictly prohibited. If you have received this transmission in e= rror, do not read it. Please immediately reply to the sender that you have r= eceived this communication in error and then delete it. >=20 > Esta mensagem e seus anexos se dirigem exclusivamente ao seu destinat=C3=A1= rio, pode conter informa=C3=A7=C3=A3o privilegiada ou confidencial e =C3=A9 p= ara uso exclusivo da pessoa ou entidade de destino. Se n=C3=A3o =C3=A9 vossa= senhoria o destinat=C3=A1rio indicado, fica notificado de que a leitura, ut= iliza=C3=A7=C3=A3o, divulga=C3=A7=C3=A3o e/ou c=C3=B3pia sem autoriza=C3=A7=C3= =A3o pode estar proibida em virtude da legisla=C3=A7=C3=A3o vigente. Se rece= beu esta mensagem por erro, rogamos-lhe que nos o comunique imediatamente po= r esta mesma via e proceda a sua destrui=C3=A7=C3=A3o > _______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls From nobody Sun Feb 10 09:15:49 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 517A8130E8E for ; Sun, 10 Feb 2019 09:15:47 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.631 X-Spam-Level: X-Spam-Status: No, score=-1.631 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, HTML_MESSAGE=0.001, HTML_OBFUSCATE_05_10=0.26, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, T_FILL_THIS_FORM_SHORT=0.01] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=nextworks-it.20150623.gappssmtp.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id wN_YuK-46LPJ for ; 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boundary="0000000000007f1c6905818d573e" Archived-At: Subject: Re: [mpls] working group last call on draft-ietf-mpls-rmr X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 10 Feb 2019 17:15:47 -0000 --0000000000007f1c6905818d573e Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Dear WG chair & mailing list though not directly writing the related proto specification I-Ds, I support the adoption of this draft. br Gino -----Mensaje original----- De: Loa Andersson Enviado el: s=C3=A1bado, 9 de febrero de 2019 11:19 Para: mpls-chairs@ietf.org; draft-ietf-mpls-rmr@ietf.org Asunto: Re: working group last call on draft-ietf-mpls-rmr Authors, I'm holding of the closing of this wglc, there are two reasons: - we only have one response to the mailing list, can you please help me get a few more, at least the people writing documents that are based on this one should respond - I asked for a RTG Dir review, that is no in yet, bit I have a promise that it will appear soon /Loa On 2019-01-15 16:10, Loa Andersson wrote: > Working Group, > > This is to initiate a two week working group last call on > draft-ietf-mpls-rmr. > > Please send your comments to the mpls wg mailing list (mpls@ietf.org). > > There are no IPR disclosures directly against draft-ietf-mpls-rmr, but > an IPR (#2661) were disclosed against the individual document that we > adopted as a working group document. > > Both authors have stated on the working group mailing list that they > are unaware of any non-disclosed IPRs that relates to this document. > > This working group last call ends Wednesday January 30, 2019. > > /Loa > mpls wg co-chair -- Loa Andersson email: loa@pi.nu Senior MPLS Expert Bronze Dragon Consulting phone: +46 739 81 21 64 --=20 =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D Dr. Gino Carrozzo Deputy Head of R&D mobile : +39 348 7610 081 landline : +39 050 3871 679 fax : +39 050 3871 601 e-mail : g.carrozzo@nextworks.it web : www.nextworks.it address : Nextworks s.r.l. via Livornese, 1027 56122 S.Piero a Grado, Pisa, ITALY =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D --0000000000007f1c6905818d573e Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Dear WG chair & mailing list

though= not directly writing the related proto specification I-Ds, I support the a= doption of this draft.

br
Gino
<= br>
-----Mensaje original-----
De: Loa Andersson <loa@pi.nu>
Enviado el: s= =C3=A1bado, 9 de febrero de 2019 11:19
Para:=C2=A0mpls-ch= airs@ietf.org;=C2=A0dra= ft-ietf-mpl= s-rmr@ietf<= /span>.org
Asunto: Re:=C2=A0working= =C2=A0group=C2=A0l= ast=C2=A0call=C2=A0on=C2=A0draft-ietf-mpls-rmr

Auth= ors,

I'm holding of the closing of this wglc, there are two
r= easons:

- we only have one response to the mailing list, can you
= =C2=A0 =C2=A0please help me get a few more, at least the people writing
= =C2=A0 =C2=A0documents that are based on this one should respond
- I ask= ed for a RTG Dir review, that is no in yet, bit I have
=C2=A0 =C2=A0a pr= omise that it will appear soon

/Loa

On 2019-01-15 16:10, Loa = Andersson wrote:
>=C2=A0Working=C2=A0= Group,
>
> This is to initiate = a two week=C2=A0working=C2=A0group=C2=A0last=C2=A0call=C2=A0on
>=C2=A0draft-ietf-mpls-rmr.
>
> Please= send your comments to the=C2=A0mpls=C2=A0w= g mailing list (mpls@ietf.org).=
>
> There are no IPR disclosures directly against=C2=A0draft-ietf-mpls-rmr, but
&= gt; an IPR (#2661) were disclosed against the individual document that we> adopted as a=C2=A0working=C2=A0group=C2=A0document.
>
> Both author= s have stated on the=C2=A0working=C2=A0group=C2=A0mailing list that they
> are u= naware of any non-disclosed IPRs that relates to this document.
>
= > This=C2=A0working=C2=A0group=C2=A0last=C2=A0call=C2=A0ends Wednesday January 30, 2019.
&g= t;
> /Loa
>=C2=A0mpls=C2=A0wg c= o-chair

--


Loa Andersson=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 email:=C2=A0loa@pi.nu
Senior=C2=A0MPLS=C2=A0Expert
Bronze Dragon Consulting=C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0phone: +46 739 81 21 64=C2=A0=C2= =A0

--
--0000000000007f1c6905818d573e-- From nobody Sun Feb 10 12:35:48 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id C85EE12426E for ; Sun, 10 Feb 2019 12:35:46 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.63 X-Spam-Level: X-Spam-Status: No, score=-1.63 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, HTML_OBFUSCATE_05_10=0.26, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, T_FILL_THIS_FORM_SHORT=0.01] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id waXnJ1Z9VY51 for ; Sun, 10 Feb 2019 12:35:43 -0800 (PST) Received: from mail.cnit.it (mail.cnit.it [217.9.64.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id DB76B1228B7 for ; Sun, 10 Feb 2019 12:35:42 -0800 (PST) Received: from localhost (localhost [127.0.0.1]) by mail.cnit.it (Postfix) with ESMTP id 944BB40981 for ; Sun, 10 Feb 2019 21:35:40 +0100 (CET) X-Virus-Scanned: by cnit.it Received: from mail.cnit.it ([127.0.0.1]) by localhost (mail.cnit.it [127.0.0.1]) (amavisd-new, port 10026) with LMTP id P6kMwe8KOceq for ; Sun, 10 Feb 2019 21:35:40 +0100 (CET) Received: from [192.168.1.6] (host54-188-dynamic.21-87-r.retail.telecomitalia.it [87.21.188.54]) by mail.cnit.it (Postfix) with ESMTPSA id 457F24051A for ; Sun, 10 Feb 2019 21:35:40 +0100 (CET) To: mpls@ietf.org References: From: Filippo Cugini Message-ID: Date: Sun, 10 Feb 2019 21:35:39 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.5.0 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/alternative; boundary="------------AE39E7CA8540E3DAEA1BAEA1" Content-Language: it-IT Archived-At: Subject: Re: [mpls] working group last call on draft-ietf-mpls-rmr X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 10 Feb 2019 20:35:47 -0000 This is a multi-part message in MIME format. --------------AE39E7CA8540E3DAEA1BAEA1 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit +1 Support   Filippo Il 10/02/2019 18:15, Gino Carrozzo ha scritto: > Dear WG chair & mailing list > > though not directly writing the related proto specification I-Ds, I > support the adoption of this draft. > > br > Gino > > -----Mensaje original----- > De: Loa Andersson > > Enviado el: sábado, 9 de febrero de 2019 11:19 > Para: mpls-chairs@ietf.org ; > draft-ietf-mpls-rmr@ietf.org > Asunto: Re: working group last call on draft-ietf-mpls-rmr > > Authors, > > I'm holding of the closing of this wglc, there are two > reasons: > > - we only have one response to the mailing list, can you >    please help me get a few more, at least the people writing >    documents that are based on this one should respond > - I asked for a RTG Dir review, that is no in yet, bit I have >    a promise that it will appear soon > > /Loa > > On 2019-01-15 16:10, Loa Andersson wrote: > > Working Group, > > > > This is to initiate a two week working group last call on > > draft-ietf-mpls-rmr. > > > > Please send your comments to the mpls wg mailing list (mpls@ietf.org > ). > > > > There are no IPR disclosures directly against draft-ietf-mpls-rmr, but > > an IPR (#2661) were disclosed against the individual document that we > > adopted as a working group document. > > > > Both authors have stated on the working group mailing list that they > > are unaware of any non-disclosed IPRs that relates to this document. > > > > This working group last call ends Wednesday January 30, 2019. > > > > /Loa > > mpls wg co-chair > > -- > > > Loa Andersson                        email: loa@pi.nu > Senior MPLS Expert > Bronze Dragon Consulting             phone: +46 739 81 21 64 > > -- > ============================================================== >   Dr. Gino Carrozzo > Deputy Head of R&D > > mobile    : +39 348 7610 081 > landline  : +39 050 3871 679 >   fax         : +39 050 3871 601 > e-mail    : g.carrozzo@nextworks.it >   web       : www.nextworks.it > address   : Nextworks s.r.l. >             via Livornese, 1027 >             56122 S.Piero a Grado, Pisa, ITALY > ============================================================== > > _______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls --------------AE39E7CA8540E3DAEA1BAEA1 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 8bit

+1

Support

  Filippo


Il 10/02/2019 18:15, Gino Carrozzo ha scritto:
Dear WG chair & mailing list

though not directly writing the related proto specification I-Ds, I support the adoption of this draft.

br
Gino

-----Mensaje original-----
De: Loa Andersson <
loa@pi.nu>
Enviado el: sábado, 9 de febrero de 2019 11:19
Para: mpls-chairs@ietf.orgdraft-ietf-mpls-rmr@ietf.org
Asunto: Re: working group last call on draft-ietf-mpls-rmr

Authors,

I'm holding of the closing of this wglc, there are two
reasons:

- we only have one response to the mailing list, can you
   please help me get a few more, at least the people writing
   documents that are based on this one should respond
- I asked for a RTG Dir review, that is no in yet, bit I have
   a promise that it will appear soon

/Loa

On 2019-01-15 16:10, Loa Andersson wrote:
Working Group,
>
> This is to initiate a two week working group last call on
draft-ietf-mpls-rmr.
>
> Please send your comments to the mpls wg mailing list (mpls@ietf.org).
>
> There are no IPR disclosures directly against draft-ietf-mpls-rmr, but
> an IPR (#2661) were disclosed against the individual document that we
> adopted as a working group document.
>
> Both authors have stated on the working group mailing list that they
> are unaware of any non-disclosed IPRs that relates to this document.
>
> This working group last call ends Wednesday January 30, 2019.
>
> /Loa
mpls wg co-chair

--


Loa Andersson                        email: loa@pi.nu
Senior MPLS Expert
Bronze Dragon Consulting             phone: +46 739 81 21 64  

--
==============================================================
  Dr. Gino Carrozzo
  Deputy Head of R&D

  mobile    : +39 348 7610 081
  landline  : +39 050 3871 679                  
  fax         : +39 050 3871 601                  
  e-mail    : g.carrozzo@nextworks.it               
  web       : www.nextworks.it               
  address   : Nextworks s.r.l.
                  via Livornese, 1027                        
                  56122 S.Piero a Grado, Pisa, ITALY                      
==============================================================

_______________________________________________
mpls mailing list
mpls@ietf.org
https://www.ietf.org/mailman/listinfo/mpls
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11 Feb 2019 11:29:09 +0800 From: Qin Wu To: "Zhengguangying (Walker)" , Sam Aldrin , "Reshad Rahman (rrahman)" CC: "mpls@ietf.org" , "mpls-chairs@ietf.org" , "draft-zheng-mpls-lsp-ping-yang-cfg@ietf.org" Thread-Topic: [mpls] IPR poll on draft-zheng-mpls-lsp-ping-yang-cfg Thread-Index: AdTBudgmR6UIGqrOQR2A8bTrbaHsbw== Date: Mon, 11 Feb 2019 03:29:09 +0000 Message-ID: Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.134.31.203] Content-Type: multipart/alternative; boundary="_000_B8F9A780D330094D99AF023C5877DABA9B277ECFnkgeml513mbxchi_" MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: Subject: Re: [mpls] IPR poll on draft-zheng-mpls-lsp-ping-yang-cfg X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 11 Feb 2019 03:29:22 -0000 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with ESMTP id R1y5WsNjoYDm; Sun, 10 Feb 2019 19:56:48 -0800 (PST) Received: from mail-pg1-x52f.google.com (mail-pg1-x52f.google.com [IPv6:2607:f8b0:4864:20::52f]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 16311127133; Sun, 10 Feb 2019 19:56:48 -0800 (PST) Received: by mail-pg1-x52f.google.com with SMTP id y1so4351080pgk.11; Sun, 10 Feb 2019 19:56:48 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=lWKUzsCz2Ar51NOBqniJEavObkoW40yoZtz/CFPHZWo=; b=TJgdHc7L7jjELVUy/+DVqfu04zrbHBs9eHBnhXE8vMylwN3Or1DAZIjF6sKtXZNeki 9LJgejqBk62dGnOOWEvvYO79UDNWgqxxGO8QmxhT05BcdX2ReVGznNqjNu/LgqtkC/LK bwZ8BA38w/1Y1FFbhvF9UsjEll/yQO1V+LfPaWr1D8SEu2nreAnR0iHXu8BY0QDGr6wv vPrMNxTjf6UM4WZqW6BQqSyO0EaS3Li4COTrp205FbO3bdjVJoj2WPiuyh/IKi0a+Ezh 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-0800 (PST) MIME-Version: 1.0 References: <1bf361f0-1987-ce4e-0671-d46886898e44@pi.nu> In-Reply-To: <1bf361f0-1987-ce4e-0671-d46886898e44@pi.nu> From: Vishnu Pavan Beeram Date: Sun, 10 Feb 2019 22:56:35 -0500 Message-ID: To: Loa Andersson Cc: "mpls@ietf.org" , "mpls-chairs@ietf.org" , "draft-ietf-mpls-rmr@ietf.org" , Deborah A Brungard Content-Type: multipart/alternative; boundary="00000000000036f1960581964c2b" Archived-At: Subject: Re: [mpls] working group last call on draft-ietf-mpls-rmr X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 11 Feb 2019 03:56:51 -0000 --00000000000036f1960581964c2b Content-Type: text/plain; charset="UTF-8" Loa, Hi! Sorry for sending this in late. I have reviewed the current version (09) of this WG document. A few minor nits aside (listed below), the document is pretty well baked and ready to progress to the next stage. Regards, Pavan ** Nits: -- Section 1.1 Ring ID (RID): A non-zero number that identifies a ring; this is unique in some scope of a Service Provider's network. A node may belong to multiple rings. The above can be interpreted as the Ring ID being always a non-zero number. Consider adding something in the terminology section to signify that "RID=zero" (promiscuous node) is a special case. Same section: Ring links: Links that connnect ring neighbors. Express links: Links that connnect non-neighboring ring nodes. Fix typo in both definitions -- s/connnect/connect Also, in the same section: P_jk (Q_jk): A Path (Resv) message sent by R_j for RL_k. The above notation isn't used in this document or in either of the two RSVP RMR documents that have been published so far. Consider removing it from this document (it can be added in the base RSVP RMR document if needed). -- Section 3.3.1 The use of express links will be described in a future version of this document. Please remove the above statement if there are no plans to add more text on "express links" in this document. -- Section 4.1 MBZ (MUST be zero) isn't a well-known abbreviation. Please expand it. -- Section 4.3 ..other nodes in the ring to identify the ring master. There should be exaclty one; if not, each node restarts timer T2 and tries again. Fix typo -- s/exaclty/exactly -- Section 4.5 The removal of the last ring link between two nodes, or the removal of a ring node is an event that triggers protection switching. In a simple ring, the result is a broken ring. However, if a ring has express links, then it may be able to converge to a smaller ring with protection. Details of this process will be given in a future version. Please remove the last statement from the above paragraph if there are no plans to add more text on "express links" in this document. Also, in the same section: The addition of a new ring node can also be handled incrementally. Again, the details of this process will be given in a futre version. The last sentence needs to be removed/corrected. -- Section 5 A future version of this document will specify protocol-independent details about ring LSP signaling. The above statement needs to be removed if there are no plans of specifying the protocol-independent signaling details in this document. Consider replacing it with something along the following lines: The ring LSP signaling procedures will be described in the companion signaling documents. -- On Tue, Jan 15, 2019 at 3:11 AM Loa Andersson wrote: > Working Group, > > This is to initiate a two week working group last call on > draft-ietf-mpls-rmr. > > Please send your comments to the mpls wg mailing list (mpls@ietf.org). > > There are no IPR disclosures directly against draft-ietf-mpls-rmr, but > an IPR (#2661) were disclosed against the individual document that we > adopted as a working group document. > > Both authors have stated on the working group mailing list that they > are unaware of any non-disclosed IPRs that relates to this document. > > This working group last call ends Wednesday January 30, 2019. > > /Loa > mpls wg co-chair > -- > > > Loa Andersson email: loa@pi.nu > Senior MPLS Expert > Bronze Dragon Consulting phone: +46 739 81 21 64 > > _______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls > --00000000000036f1960581964c2b Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Loa, Hi!

Sorry for sending th= is in late. I have reviewed the current version (09) of this WG document. A= few minor nits aside (listed below), the document is pretty well baked and= ready to progress to the next stage.

Regards,
Pavan

**Nits:

--
Section 1.1

=C2=A0=C2=A0 Ring ID (RID):=C2=A0 = A non-zero number that identifies a ring; this is
=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0 unique in some scope of a Service Provider's network.=C2=A0 A= node may
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 belong to multiple rings.
The above can be interpreted as the Ring ID being always a non-zero numbe= r. Consider adding something in the terminology section to signify that &qu= ot;RID=3Dzero" (promiscuous node) is a special case.

Same secti= on:

=C2=A0=C2=A0 Ring links:=C2=A0 Links that connnect ring neighbor= s.
=C2=A0=C2=A0 Express links:=C2=A0 Links that connnect non-neighboring= ring nodes.

Fix typo in both definitions -- s/connnect/connect
<= br>Also, in the same section:

=C2=A0=C2=A0 P_jk (Q_jk):=C2=A0 A Path= (Resv) message sent by R_j for RL_k.

The above notation isn't u= sed in this document or in either of the two RSVP RMR documents that have b= een published so far. Consider removing it from this document (it can be ad= ded in the base RSVP RMR document if needed).

--


Section = 3.3.1

=C2=A0=C2=A0 The use of express links will be described in a f= uture
=C2=A0=C2=A0 version of this document.

Please remove the a= bove statement if there are no plans to add more text on "express link= s" in this document.

--

Section 4.1

MBZ (MUST be = zero) isn't a well-known abbreviation. Please expand it.

--
=
Section 4.3

=C2=A0=C2=A0 ..other nodes in the ring to identify t= he ring master.=C2=A0 There should be
=C2=A0=C2=A0 exaclty one; if not, = each node restarts timer T2 and tries again.

Fix typo -- s/exaclty/e= xactly

--

Section 4.5

=C2=A0=C2=A0 The removal of the= last ring link between two nodes, or the removal
=C2=A0=C2=A0 of a ring= node is an event that triggers protection switching.=C2=A0 In a
=C2=A0= =C2=A0 simple ring, the result is a broken ring.=C2=A0 However, if a ring h= as
=C2=A0=C2=A0 express links, then it may be able to converge to a smal= ler ring with
=C2=A0=C2=A0 protection.=C2=A0 Details of this process wil= l be given in a future
=C2=A0=C2=A0 version.

Please remove the la= st statement from the above paragraph if there are no plans to add more tex= t on "express links" in this document.

Also, in the same s= ection:

=C2=A0=C2=A0 The addition of a new ring node can also be han= dled incrementally.
=C2=A0=C2=A0 Again, the details of this process will= be given in a futre version.

The last sentence needs to be removed/= corrected.

--

Section 5

=C2=A0=C2=A0 A future version = of this document will specify protocol-independent
=C2=A0=C2=A0 details = about ring LSP signaling.

The above statement needs to be removed if= there are no plans of specifying the protocol-independent signaling detail= s in this document. Consider replacing it with something along the followin= g lines:

=C2=A0=C2=A0 The ring LSP signaling procedures will be desc= ribed in the companion=C2=A0=C2=A0=C2=A0
=C2=A0=C2=A0 signaling documen= ts.

--


On Tue, Jan 15, 2019 at 3:11 AM Loa Anders= son <loa@pi.nu> wrote:
Working Group,

This is to initiate a two week working group last call on
draft-ietf-mpls-rmr.

Please send your comments to the mpls wg mailing list (mpls@ietf.org).

There are no IPR disclosures directly against draft-ietf-mpls-rmr, but
an IPR (#2661) were disclosed against the individual document that we
adopted as a working group document.

Both authors have stated on the working group mailing list that they
are unaware of any non-disclosed IPRs that relates to this document.

This working group last call ends Wednesday January 30, 2019.

/Loa
mpls wg co-chair
--


Loa Andersson=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0= =C2=A0 =C2=A0 =C2=A0 email: loa@pi.nu
Senior MPLS Expert
Bronze Dragon Consulting=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0pho= ne: +46 739 81 21 64

_______________________________________________
mpls mailing list
mpls@ietf.org
https://www.ietf.org/mailman/listinfo/mpls
--00000000000036f1960581964c2b-- From nobody Sun Feb 10 22:48:32 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id D136012894E for ; Sun, 10 Feb 2019 22:48:30 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.589 X-Spam-Level: X-Spam-Status: No, score=-2.589 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_LOW=-0.7, SPF_PASS=-0.001, T_FILL_THIS_FORM_SHORT=0.01, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Sjcfr1SpOO6q for ; Sun, 10 Feb 2019 22:48:27 -0800 (PST) Received: from mx05.telecomitalia.it (mx05.telecomitalia.it [156.54.232.21]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id DA05C12008A for ; 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charset="ISO-8859-1" Content-Transfer-Encoding: quoted-printable +1 Best regards Andrea Inviato dal mio dispositivo mobile Huawei -------- Messaggio originale -------- Oggetto: [EXT] Re: [mpls] working group last call on draft-ietf-mpls-rmr Da: Filippo Cugini A: mpls@ietf.org CC: +1 Support Filippo Il 10/02/2019 18:15, Gino Carrozzo ha scritto: Dear WG chair & mailing list though not directly writing the related proto specification I-Ds, I support= the adoption of this draft. br Gino -----Mensaje original----- De: Loa Andersson > Enviado el: s?bado, 9 de febrero de 2019 11:19 Para: mpls-chairs@ietf.org; draft-ietf-mpls-rmr= @ietf.org Asunto: Re: working group last call on draft-ietf-mpls-rmr Authors, I'm holding of the closing of this wglc, there are two reasons: - we only have one response to the mailing list, can you please help me get a few more, at least the people writing documents that are based on this one should respond - I asked for a RTG Dir review, that is no in yet, bit I have a promise that it will appear soon /Loa On 2019-01-15 16:10, Loa Andersson wrote: > Working Group, > > This is to initiate a two week working group last call on > draft-ietf-mpls-rmr. > > Please send your comments to the mpls wg mailing list (mpls@ietf.org). > > There are no IPR disclosures directly against draft-ietf-mpls-rmr, but > an IPR (#2661) were disclosed against the individual document that we > adopted as a working group document. > > Both authors have stated on the working group mailing list that they > are unaware of any non-disclosed IPRs that relates to this document. > > This working group last call ends Wednesday January 30, 2019. > > /Loa > mpls wg co-chair -- Loa Andersson email: loa@pi.nu Senior MPLS Expert Bronze Dragon Consulting phone: +46 739 81 21 64 -- =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D Dr. Gino Carrozzo Deputy Head of R&D mobile : +39 348 7610 081 landline : +39 050 3871 679 fax : +39 050 3871 601 e-mail : g.carrozzo@nextworks.it web : www.nextworks.it address : Nextworks s.r.l. via Livornese, 1027 56122 S.Piero a Grado, Pisa, ITALY =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D _______________________________________________ mpls mailing list mpls@ietf.org https://www.ietf.org/mailman/listinfo/mpls Questo messaggio e i suoi allegati sono indirizzati esclusivamente alle pers= one indicate. La diffusione, copia o qualsiasi altra azione derivante dalla= conoscenza di queste informazioni sono rigorosamente vietate. Qualora abbia= te ricevuto questo documento per errore siete cortesemente pregati di darne= immediata comunicazione al mittente e di provvedere alla sua distruzione, G= razie. This e-mail and any attachments is confidential and may contain privileged i= nformation intended for the addressee(s) only. Dissemination, copying, print= ing or use by anybody else is unauthorised. If you are not the intended reci= pient, please delete this message and any attachments and advise the sender= by return e-mail, Thanks. Rispetta l'ambiente. Non stampare questa mail se non =E8 necessario. --_000_swvw3624owcntrgxf1n3k8b5c86uljqqxs0icjp2ehur8dbwf50yvj3_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable +1
Best regards
Andrea

Inviato dal mio dispositivo mobile Huawei

-------- Messaggio originale --------
Oggetto: [EXT] Re: [mpls] working group last call on draft-ietf-mpls-rmr
Da: Filippo Cugini
A: mpls@ietf.org
CC:

+1

Support

  Filippo


Il 10/02/2019 18:15, Gino Carrozzo ha scritto= :
Dear WG chair & mailing list

though not directly writing the related proto specification I-Ds, I sup= port the adoption of this draft.

br
Gino

-----Mensaje original-----
De: Loa Andersson <loa@pi.= nu>
Enviado el: sábado, 9 de febrero de 2019 11:19
Para: mpls-chairs@ietf.or= gdraft-ietf= -mpls-rmr@ietf.org
Asunto: Re: working group last call on draft<= /span>-ietf-mpls-rmr

Authors,

I'm holding of the closing of this wglc, there are two
reasons:

- we only have one response to the mailing list, can you
   please help me get a few more, at least the people writing
   documents that are based on this one should respond
- I asked for a RTG Dir review, that is no in yet, bit I have
   a promise that it will appear soon

/Loa

On 2019-01-15 16:10, Loa Andersson wrote:
Working Group,
>
> This is to initiate a two week working group last call on
draft-iet= f-mpls-rmr.
>
> Please send your comments to the mpls wg mailing list (mpls@ietf.o= rg).
>
> There are no IPR disclosures directly against draft-ietf-mpls-rmr, but
> an IPR (#2661) were disclosed against the individual document that we > adopted as a working group document.
>
> Both authors have stated on the working group mailing list that they=
> are unaware of any non-disclosed IPRs that relates to this document. >
> This working group last call ends Wednesday January 30, 2019.
>
> /Loa
mpls wg co-chair

--


Loa Andersson                 =       email: loa@pi.nu
Senior MPLS Expert
Bronze Dragon Consulting             phon= e: +46 739 81 21 64  

--
=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D
  Dr. Gino Carrozzo
  Deputy Head of R&= ;D

  mobile    = : +39 348 7610 081
  landline  : = 3;39 050 3871 679                 &n= bsp;
  fax     &n= bsp;   : +39 050 3871 601            =      
  e-mail    = : g.carrozzo@nextworks.it              =  
  web     &n= bsp; : www.nextworks.it               <= /font>
  address   : Nex= tworks s.r.l.
       =           via Livornese, 1027      =                  
       =           56122 S.Piero a Grado, Pisa, ITALY  = ;                    
=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D

_______________________________________________
mpls mailing list
mpls@iet=
f.org
https://www.ietf.org/mailman/listinfo/mpls
Questo messaggio e i suoi allegati sono indirizzati esclusivamente alle= persone indicate. La diffusione, copia o qualsiasi altra azione derivante d= alla conoscenza di queste informazioni sono rigorosamente vietate. Qualora a= bbiate ricevuto questo documento per errore siete cortesemente pregati di da= rne immediata comunicazione al mittente e di provvedere alla sua distruzione= , Grazie.

This e-mail and any attachments is confidential and may contain privil= eged information intended for the addressee(s) only. Dissemination, copying,= printing or use by anybody else is unauthorised. If you are not the intende= d recipient, please delete this message and any attachments and advise the s= ender by return e-mail, Thanks.

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--_000_swvw3624owcntrgxf1n3k8b5c86uljqqxs0icjp2ehur8dbwf50yvj3_-- From nobody Mon Feb 11 07:01:35 2019 Return-Path: X-Original-To: mpls@ietf.org Delivered-To: mpls@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 6C800128D52; Mon, 11 Feb 2019 07:01:25 -0800 (PST) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: Susan Hares To: Cc: draft-ietf-mpls-rmr.all@ietf.org, mpls@ietf.org, ietf@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 6.91.0 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <154989728538.29584.3746504660070934932@ietfa.amsl.com> Date: Mon, 11 Feb 2019 07:01:25 -0800 Archived-At: Subject: [mpls] Rtgdir early review of draft-ietf-mpls-rmr-09 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 11 Feb 2019 15:01:25 -0000 Reviewer: Susan Hares Review result: Not Ready This is a routing directorate review. As such, it should be considered the same as other later WG LC review. overall-comment: Well-written and an exciting new direction. I appreciate Kireeti and Luis work on this topic. major concerns: 1) security (section 8), 2) long-term stability of architecture discussion, 3) FRR/Protection sections (3.6/3.7), and 4) amount of traffic that auto-discovery will place on the network. caveat: I have not been an WG participant for these discussions. As such, I am a "fresh" pair of eyes to read the current specification. Major concerns ======= 1) Section 8 - Security considerations. "This section states 'It is not anticipated that either the notion of MPLS rings or the extensions to various protocols to support them will cause security loopholes." This statement provides an opinion of the authors without any reasoning behind it. As such, it provide no utility to the reader. Inquiring minds would like to know "why" the authors feel this true and on what basis. Launching a new type of structure within the MPLS cloud that auto-configures it self with a great deal of message exchange does not appear to have these qualities. Surely, these authors have considered or tried these issues. 2) Long-term stability of document - in the face of repeated statements of a future version of this document. If this is just an interim document, then why is it being standardized. In a specification that is going to include an RFC track, the sttaements of scope seem inappropriate in sections 1, 3.3, 4.5, 5, 7.1, and 7.2). This scope should be gathered to a particular place and stated in another. I agree with the concept of deployment and then refinement of the protocol mechanisms. However, this document seems to anticipate quick refinement of the basic architeture. If this is really true, then why is this document going ot the IESG. If this is not true, then the scoping in above sections needs to be refined. 3) Fast re-routing installation puts details (3.6) before concepts of protection. Only after I read section 3.7, did section 3.6 start to make sense. If you re-ordered the sections, perhaps you could provide additonal depth to section 3.6. 4) paragraph 4.3, last sentence "The nodes that set their M bit should be extra careful in advertising their M Bit in subsequent tries". As an engineering, I find this description to avoid many of the problems about how long the bidding for master will take. Is there a potential for the bidding to repeat over and over. If so, how does the operator detect it. Can something drop the nodes into membership phase or re-identification phase repeated? While the ring announcement and ring identification cycle become a denial-of-service attack on the IGPs announcing the information? I suspect the authors have investigated these points, but the architeture document is the place to indicate why the architecture prevents these problems. As an editor, I find the anthropomorphism to be unwarranted in the text. While it took me to flights of fantasy where the nodes became intelligent silicon life forms, I suspect that is not what the authors wanted. Perhaps after clarifying the engineering point, the authors can rewrite the sense of the text. brief editorial nits: 1) page 4, node index linke /upto/ to /up to/ 2) page 5 (Q_jk): - not define earlier, please define it. 3) page 5, section 3 paragraph 2, sentence file sentence: current: /The default is to send traffic along the shortest path./ new: /The default policy is to send traffic along the shortest path./ 4) page 6, section 3.3 sentences 2 current:/ The last attribute means/ new: /The "auto-bundled" attribute means/ While the authors first formi is current, the change makes a specification clear. 5) page 3.5 - please spell out the first use of UHP 6) section 3.6/3.7 - could use a diagram. 7) page 11, section 4.3, paragraph 2, sentence 2 (spelling) - old/exaclty one;/ new/exactly one/ From nobody Mon Feb 11 07:38:04 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 3D2F9131031 for ; 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Ron From nobody Mon Feb 11 07:48:39 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 6E69013104F for ; Mon, 11 Feb 2019 07:48:38 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.701 X-Spam-Level: X-Spam-Status: No, score=-2.701 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=juniper.net Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 5dn-DaB4lzfy for ; Mon, 11 Feb 2019 07:48:36 -0800 (PST) Received: from mx0b-00273201.pphosted.com (mx0b-00273201.pphosted.com [67.231.152.164]) (using 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engine=2.50.10434:, , definitions=2019-02-11_10:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_spam_notspam policy=outbound_spam score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1011 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1902110119 Archived-At: Subject: Re: [mpls] working group last call on draft-ietf-mpls-rmr X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 11 Feb 2019 15:48:38 -0000 U3VwcG9ydCBtb3ZpbmcgaXQgcGFzdCBMQyB0byB0aGUgbmV4dCBzdGFnZS4NCg0KVGhhbmtzIQ0K SmVmZnJleQ0KDQo+IC0tLS0tT3JpZ2luYWwgTWVzc2FnZS0tLS0tDQo+IEZyb206IExvYSBBbmRl cnNzb24gPGxvYUBwaS5udT4NCj4gU2VudDogU2F0dXJkYXksIEZlYnJ1YXJ5IDksIDIwMTkgNzo0 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dzM2WUtFZEZiM0VMeXduUXlYdyZlPQ0KPiA+DQo+IA0KPiAtLQ0KPiANCj4gDQo+IExvYSBBbmRl cnNzb24gICAgICAgICAgICAgICAgICAgICAgICBlbWFpbDogbG9hQHBpLm51DQo+IFNlbmlvciBN UExTIEV4cGVydA0KPiBCcm9uemUgRHJhZ29uIENvbnN1bHRpbmcgICAgICAgICAgICAgcGhvbmU6 ICs0NiA3MzkgODEgMjEgNjQNCj4gDQoNCg== From nobody Mon Feb 11 15:03:41 2019 Return-Path: X-Original-To: mpls@ietf.org Delivered-To: mpls@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 1C9FD1311A2; Mon, 11 Feb 2019 15:03:26 -0800 (PST) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: The IESG To: "IETF-Announce" X-Test-IDTracker: no X-IETF-IDTracker: 6.91.0 Auto-Submitted: auto-generated Precedence: bulk Cc: mpls@ietf.org, db3546@att.com, The IESG , draft-ietf-mpls-rsvp-shared-labels@ietf.org, mpls-chairs@ietf.org, Loa Andersson , rfc-editor@rfc-editor.org, loa@pi.nu MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-ID: <154992620611.29544.8131871277357953604.idtracker@ietfa.amsl.com> Date: Mon, 11 Feb 2019 15:03:26 -0800 Archived-At: Subject: [mpls] Protocol Action: 'Signaling RSVP-TE tunnels on a shared MPLS forwarding plane' to Proposed Standard (draft-ietf-mpls-rsvp-shared-labels-09.txt) X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 11 Feb 2019 23:03:26 -0000 The IESG has approved the following document: - 'Signaling RSVP-TE tunnels on a shared MPLS forwarding plane' (draft-ietf-mpls-rsvp-shared-labels-09.txt) as Proposed Standard This document is the product of the Multiprotocol Label Switching Working Group. The IESG contact persons are Alvaro Retana, Martin Vigoureux and Deborah Brungard. A URL of this Internet Draft is: https://datatracker.ietf.org/doc/draft-ietf-mpls-rsvp-shared-labels/ Technical Summary This document defines a mechanism to prevent the maximum size of the label space limit on an LSR from being a constraint to control plane scaling on that node. It introduces the notion of pre-installed 'per Traffic Engineering (TE) link labels' that can be shared by MPLS RSVP-TE LSPs that traverse these TE links. This approach significantly reduces the forwarding plane state required to support a large number of LSPs. This couples the feature benefits of the RSVP-TE control plane with the simplicity of the Segment Routing MPLS forwarding plane. Working Group Summary No such controversies. The WG process has been very straightforward. Document Quality We know of implementation plans and implementations, this was the reason to allocate some of the code points by early allocation. However we have no detailed information. We have started an implementation poll and will update the Write-Up when we receive more information. No expert reviews necessary. Personnel Who is the Document Shepherd for this document? Loa Andersson Who is the Responsible Area Director? Deborah Brungard From nobody Mon Feb 11 22:06:43 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id D2B9D12D861; Mon, 11 Feb 2019 22:06:41 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.9 X-Spam-Level: X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 6t2W_Sfo9KH5; Mon, 11 Feb 2019 22:06:39 -0800 (PST) Received: from pipi.pi.nu (pipi.pi.nu [83.168.239.141]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id AFEE512DD85; Mon, 11 Feb 2019 22:06:39 -0800 (PST) Received: from [192.168.1.20] (unknown [119.94.174.90]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: loa@pi.nu) by pipi.pi.nu (Postfix) with ESMTPSA id 4750318015A3; Tue, 12 Feb 2019 07:06:36 +0100 (CET) From: Loa Andersson To: "mpls@ietf.org" Cc: "mpls-chairs@ietf.org" , "draft-zheng-mpls-lsp-ping-yang-cfg@ietf.org" Message-ID: <50a0a7c0-9849-efd9-acab-2d346c8d50f4@pi.nu> Date: Tue, 12 Feb 2019 14:06:30 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.5.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Archived-At: Subject: [mpls] The IPR poll on draft-zheng-mpls-lsp-ping-yang-cfg X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 12 Feb 2019 06:06:42 -0000 Working Group, We have an IPR poll running on draft-zheng-mpls-lsp-ping-yang-cfg. However it has stalled, since a listed contributor has not responded, Yanfeng Zhang. He his no longer employed by the same company as he were that he was lsited as a contributor. We have tried to locate him but so far we have failed. We normally wait for responses from all authors and contributors, but failing that there is a escape procedure. Here is what happens now: - if anyone has contact with Yanfeng Zhang and can contact him, please do so and ask him to respond to the IPR poll - If nothing has happened February 19, I will start the wgap, and in the mail starting the wgap explain the IPR situation. If anyone have objections to these procedure, please notify the mailing list and copy the chairs. /Loa -- Loa Andersson email: loa@pi.nu Senior MPLS Expert Bronze Dragon Consulting phone: +46 739 81 21 64 From nobody Tue Feb 12 04:09:54 2019 Return-Path: X-Original-To: mpls@ietf.org Delivered-To: mpls@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id EA3E5124C04; Tue, 12 Feb 2019 04:09:46 -0800 (PST) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: Cc: mpls@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 6.91.0 Auto-Submitted: auto-generated Precedence: bulk Reply-To: mpls@ietf.org Message-ID: <154997338693.8442.70128632755287526@ietfa.amsl.com> Date: Tue, 12 Feb 2019 04:09:46 -0800 Archived-At: Subject: [mpls] I-D Action: draft-ietf-mpls-sfc-05.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 12 Feb 2019 12:09:47 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Multiprotocol Label Switching WG of the IETF. Title : An MPLS-Based Forwarding Plane for Service Function Chaining Authors : Adrian Farrel Stewart Bryant John Drake Filename : draft-ietf-mpls-sfc-05.txt Pages : 29 Date : 2019-02-12 Abstract: Service Function Chaining (SFC) is the process of directing packets through a network so that they can be acted on by an ordered set of abstract service functions before being delivered to the intended destination. An architecture for SFC is defined in RFC7665. The Network Service Header (NSH) can be inserted into packets to steer them along a specific path to realize a Service Function Chain. Multiprotocol Label Switching (MPLS) is a widely deployed forwarding technology that uses labels placed in a packet in a label stack to identify the forwarding actions to be taken at each hop through a network. Actions may include swapping or popping the labels as well, as using the labels to determine the next hop for forwarding the packet. Labels may also be used to establish the context under which the packet is forwarded. This document describes how Service Function Chaining can be achieved in an MPLS network by means of a logical representation of the NSH in an MPLS label stack. That is, the NSH is not used, but the fields of the NSH are mapped to fields in the MPLS label stack. It does not deprecate or replace the NSH, but acknowledges that there may be a need for an interim deployment of SFC functionality in brownfield networks. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-mpls-sfc/ There are also htmlized versions available at: https://tools.ietf.org/html/draft-ietf-mpls-sfc-05 https://datatracker.ietf.org/doc/html/draft-ietf-mpls-sfc-05 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-mpls-sfc-05 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ From nobody Tue Feb 12 04:15:01 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 75D6B12D861; Tue, 12 Feb 2019 04:14:59 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.6 X-Spam-Level: X-Spam-Status: No, score=-2.6 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_LOW=-0.7] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id fSzql_ZTHUip; Tue, 12 Feb 2019 04:14:52 -0800 (PST) Received: from mta5.iomartmail.com (mta5.iomartmail.com [62.128.193.155]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id D809B124C04; Tue, 12 Feb 2019 04:14:51 -0800 (PST) Received: from vs3.iomartmail.com (vs3.iomartmail.com [10.12.10.124]) by mta5.iomartmail.com (8.14.4/8.14.4) with ESMTP id x1CCDwlx029214; Tue, 12 Feb 2019 12:13:59 GMT Received: from vs3.iomartmail.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id AF8A62203C; Tue, 12 Feb 2019 12:13:58 +0000 (GMT) Received: from asmtp3.iomartmail.com (unknown [10.12.10.224]) by vs3.iomartmail.com (Postfix) with ESMTPS id 9A18B2203D; Tue, 12 Feb 2019 12:13:58 +0000 (GMT) Received: from LAPTOPK7AS653V ([87.112.189.92]) (authenticated bits=0) by asmtp3.iomartmail.com (8.14.4/8.14.4) with ESMTP id x1CCDun3026744 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Tue, 12 Feb 2019 12:13:57 GMT Reply-To: From: "Adrian Farrel" To: "'BRUNGARD, DEBORAH A'" Cc: , , , "'Russ Mundy'" , "'S Moonesamy'" References: <154997338693.8442.70128632755287526@ietfa.amsl.com> In-Reply-To: <154997338693.8442.70128632755287526@ietfa.amsl.com> Date: Tue, 12 Feb 2019 12:13:55 -0000 Organization: Old Dog Consulting Message-ID: <01b901d4c2cc$6de04c00$49a0e400$@olddog.co.uk> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Outlook 16.0 Thread-Index: AQHeyDsQlDAiNRdOSOriixBQq3WdsaXIB+Jw Content-Language: en-gb X-Originating-IP: 87.112.189.92 X-Thinkmail-Auth: adrian@olddog.co.uk X-TM-AS-GCONF: 00 X-TM-AS-Product-Ver: IMSVA-9.0.0.1623-8.2.0.1013-24424.007 X-TM-AS-Result: No--3.216-10.0-31-10 X-imss-scan-details: No--3.216-10.0-31-10 X-TMASE-Version: IMSVA-9.0.0.1623-8.2.1013-24424.007 X-TMASE-Result: 10--3.215700-10.000000 X-TMASE-MatchedRID: qIjbTF8VzOS0upcqUpSkATPDkSOzeDWWGNMTWh+TA9trMbakJN8Oeayq cSRToWuMP4wcg9yz5nEQw9gsnchuvYLSdZH87Opg+z2c4lioPkgZskwWqoib3BorpeFcAGj3Wmr Yr8SaWTWu0yIFe9uhSw+tU2/Wp19VEfcvFiT8lxDOUnHdMlbPm2Rt0giz+0LSmyiLZetSf8nJ4y 0wP1A6ADMMszeAZpzJdB0ntd9Tzp7GVuWouVipchI/jDal3oyGwI02s83B0fx+mZzGXYipE5ttl uDezTPjzeJEZbuNC08FMKyq+I0KXSxzw6MTudPyK9AQJrddopm/ZsUSd/ERWLCf48ZV53d3afcR 7jPQH1IinlGzjbYHk3tWcHWSNHdfOOjaqoykIZw= X-TMASE-SNAP-Result: 1.821001.0001-0-1-12:0,22:0,33:0,34:0-0 Archived-At: Subject: [mpls] FW: I-D Action: draft-ietf-mpls-sfc-05.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 12 Feb 2019 12:14:59 -0000 Deborah, All, I made some updates, principally to the Security Considerations, as a result of comments received during IETF last call. I believe I captured everything. Thanks, Adrian -----Original Message----- From: I-D-Announce On Behalf Of internet-drafts@ietf.org Sent: 12 February 2019 12:10 To: i-d-announce@ietf.org Cc: mpls@ietf.org Subject: I-D Action: draft-ietf-mpls-sfc-05.txt A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Multiprotocol Label Switching WG of the IETF. Title : An MPLS-Based Forwarding Plane for Service Function Chaining Authors : Adrian Farrel Stewart Bryant John Drake Filename : draft-ietf-mpls-sfc-05.txt Pages : 29 Date : 2019-02-12 The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-mpls-sfc/ From nobody Tue Feb 12 15:15:28 2019 Return-Path: X-Original-To: mpls@ietf.org Delivered-To: mpls@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id D3579126C15; Tue, 12 Feb 2019 15:15:26 -0800 (PST) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: The IESG To: "IETF-Announce" X-Test-IDTracker: no X-IETF-IDTracker: 6.91.0 Auto-Submitted: auto-generated Precedence: bulk CC: mpls@ietf.org, db3546@att.com, draft-ietf-mpls-sfc-encapsulation@ietf.org, mpls-chairs@ietf.org, Loa Andersson , loa@pi.nu Reply-To: ietf@ietf.org Sender: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Reply-To: ietf@ietf.org Message-ID: <155001332682.8635.175028859900488100.idtracker@ietfa.amsl.com> Date: Tue, 12 Feb 2019 15:15:26 -0800 Archived-At: Subject: [mpls] Last Call: (MPLS Encapsulation For The SFC NSH) to Informational RFC X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 12 Feb 2019 23:15:27 -0000 The IESG has received a request from the Multiprotocol Label Switching WG (mpls) to consider the following document: - 'MPLS Encapsulation For The SFC NSH' as Informational RFC The IESG plans to make a decision in the next few weeks, and solicits final comments on this action. Please send substantive comments to the ietf@ietf.org mailing lists by 2019-02-26. Exceptionally, comments may be sent to iesg@ietf.org instead. In either case, please retain the beginning of the Subject line to allow automated sorting. Abstract This document describes how to use a Service Function Forwarder (SFF) Label (similar to a pseudowire label or VPN label) to indicate the presence of a Service Function Chaining (SFC) Network Service Header (NSH) between an MPLS label stack and the packet payload. This allows SFC packets using the NSH to be forwarded between SFFs over an MPLS network, and to select one of multiple SFFs in the destination MPLS node. The file can be obtained via https://datatracker.ietf.org/doc/draft-ietf-mpls-sfc-encapsulation/ IESG discussion can be tracked via https://datatracker.ietf.org/doc/draft-ietf-mpls-sfc-encapsulation/ballot/ No IPR declarations have been submitted directly on this I-D. From nobody Tue Feb 12 15:30:08 2019 Return-Path: X-Original-To: mpls@ietf.org Delivered-To: mpls@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id F1811126C01; Tue, 12 Feb 2019 15:30:06 -0800 (PST) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: The IESG To: "IETF-Announce" X-Test-IDTracker: no X-IETF-IDTracker: 6.91.0 Auto-Submitted: auto-generated Precedence: bulk CC: mpls@ietf.org, db3546@att.com, draft-ietf-mpls-sr-over-ip@ietf.org, mpls-chairs@ietf.org, Loa Andersson , loa@pi.nu Reply-To: ietf@ietf.org Sender: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Reply-To: ietf@ietf.org Message-ID: <155001420691.8563.12845586045911946941.idtracker@ietfa.amsl.com> Date: Tue, 12 Feb 2019 15:30:06 -0800 Archived-At: Subject: [mpls] Last Call: (SR-MPLS over IP) to Proposed Standard X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 12 Feb 2019 23:30:07 -0000 The IESG has received a request from the Multiprotocol Label Switching WG (mpls) to consider the following document: - 'SR-MPLS over IP' as Proposed Standard The IESG plans to make a decision in the next few weeks, and solicits final comments on this action. Please send substantive comments to the ietf@ietf.org mailing lists by 2019-02-26. Exceptionally, comments may be sent to iesg@ietf.org instead. In either case, please retain the beginning of the Subject line to allow automated sorting. Abstract MPLS Segment Routing (SR-MPLS) is an MPLS data plane-based source routing paradigm in which the sender of a packet is allowed to partially or completely specify the route the packet takes through the network by imposing stacked MPLS labels on the packet. SR-MPLS could be leveraged to realize a source routing mechanism across MPLS, IPv4, and IPv6 data planes by using an MPLS label stack as a source routing instruction set while preserving backward compatibility with SR-MPLS. This document describes how SR-MPLS capable routers and IP-only routers can seamlessly co-exist and interoperate through the use of SR-MPLS label stacks and IP encapsulation/tunneling such as MPLS-in- UDP as defined in RFC 7510. The file can be obtained via https://datatracker.ietf.org/doc/draft-ietf-mpls-sr-over-ip/ IESG discussion can be tracked via https://datatracker.ietf.org/doc/draft-ietf-mpls-sr-over-ip/ballot/ The following IPR Declarations may be related to this I-D: https://datatracker.ietf.org/ipr/3210/ https://datatracker.ietf.org/ipr/3211/ From nobody Wed Feb 13 19:02:30 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id B9914130EDD; Wed, 13 Feb 2019 19:02:22 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.2 X-Spam-Level: X-Spam-Status: No, score=-4.2 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id qcnKyaDyHFfo; Wed, 13 Feb 2019 19:02:20 -0800 (PST) Received: from huawei.com (lhrrgout.huawei.com [185.176.76.210]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id A6B04130ECF; Wed, 13 Feb 2019 19:02:20 -0800 (PST) Received: from lhreml706-cah.china.huawei.com (unknown [172.18.7.108]) by Forcepoint Email with ESMTP id 1F7D2A9FCB1644FFFE23; Thu, 14 Feb 2019 03:02:18 +0000 (GMT) Received: from DGGEML405-HUB.china.huawei.com (10.3.17.49) by lhreml706-cah.china.huawei.com (10.201.108.47) with Microsoft SMTP Server (TLS) id 14.3.408.0; Thu, 14 Feb 2019 03:02:17 +0000 Received: from DGGEML510-MBX.china.huawei.com ([169.254.2.6]) by dggeml405-hub.china.huawei.com ([10.3.17.49]) with mapi id 14.03.0415.000; Thu, 14 Feb 2019 11:02:08 +0800 From: Mach Chen To: Benjamin Kaduk CC: Linda Dunbar , "secdir@ietf.org" , "mpls@ietf.org" , "draft-ietf-mpls-lsp-ping-lag-multipath.all@ietf.org" , "ietf@ietf.org" Thread-Topic: [secdir] Secdir last call review of draft-ietf-mpls-lsp-ping-lag-multipath-05 Thread-Index: AQHUkY+Xr7eIQ7lWe0az4uRG6fBCdqV9d+SwgERX9oCAHShNQA== Date: Thu, 14 Feb 2019 03:02:07 +0000 Message-ID: References: <154455986336.13151.8483284555885294015@ietfa.amsl.com> <20190126211729.GJ49072@kduck.mit.edu> In-Reply-To: <20190126211729.GJ49072@kduck.mit.edu> Accept-Language: en-US, zh-CN Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.111.194.201] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: Subject: Re: [mpls] [secdir] Secdir last call review of draft-ietf-mpls-lsp-ping-lag-multipath-05 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 14 Feb 2019 03:02:23 -0000 Hi Benjamin, Sorry for the delayed response! Please see my response inline... > -----Original Message----- > From: Benjamin Kaduk [mailto:kaduk@mit.edu] > Sent: Sunday, January 27, 2019 5:17 AM > To: Mach Chen > Cc: Linda Dunbar ; secdir@ietf.org; > mpls@ietf.org; draft-ietf-mpls-lsp-ping-lag-multipath.all@ietf.org; > ietf@ietf.org > Subject: Re: [secdir] Secdir last call review of draft-ietf-mpls-lsp-ping= -lag- > multipath-05 >=20 > On Fri, Dec 14, 2018 at 02:11:21AM +0000, Mach Chen wrote: > > Hi Linda, > > > > Thanks for the review! > > > > Some responses inline... > > > > > -----Original Message----- > > > From: ietf [mailto:ietf-bounces@ietf.org] On Behalf Of Linda Dunbar > > > Sent: Wednesday, December 12, 2018 4:24 AM > > > To: secdir@ietf.org > > > Cc: mpls@ietf.org; > > > draft-ietf-mpls-lsp-ping-lag-multipath.all@ietf.org; > > > ietf@ietf.org > > > Subject: Secdir last call review of > > > draft-ietf-mpls-lsp-ping-lag-multipath-05 > > > > > > Reviewer: Linda Dunbar > > > Review result: Ready > > > > > > I have reviewed this document as part of the security directorate's > > > ongoing effort to review all IETF documents being processed by the > > > IESG. These comments were written primarily for the benefit of the > > > security area directors. Document editors and WG chairs should > > > treat these comments just like any other last call comments. > > > > > > The summary of the review is Ready with comment > > > > > > The described mechanism for LSP Multipath Ping is very clear. The > > > Security Consideration re-uses the description of RFC8029, which is > > > very comprehensive. > > > It would be better if the draft describes how to prevent > > > intermediate LSRs in between the Initiating LSR and Responding LSR > > > from mis-using the detailed link information (e.g. forwarding to > somewhere else). > > > > The Echo Request and Reply messages are directly exchanged between the > Initiating LSR and the Responding LSR, those intermediate LSRs just forwa= rd > the messages as normal packets, they will not see the detailed link > information unless if they inspect and do DPI on every packet forwarded b= y > them. > > > > The detailed link information is supplied to the Initiating LSR for usi= ng, the > intermediate LSRs will not try to use it even if they received the inform= ation, > because there is no corresponding Echo Request to the received Echo Reply= . >=20 > The intermediate LSRs still will have access to the plaintext information= , even > if in normal operation they do not need to act upon that information. > Generally in this sort of situation we will either explicitly state that = the > intermediate nodes must be trusted to not abuse the information in > question, or provide some mechanism for end-to-end confidentiality > protection. "Intermediate nodes must be trusted to not abuse the information" is normal= ly assumed. For the intermediate nodes, there is no different between the E= cho Reply messages and any other data traffic, control messages. They just = forward the Echo Reply messages as normal packets. I am not sure it needs = to explicitly state this. Do you suggest to add such a statement in the se= curity consideration section? >=20 > Also (noting that I only skimmed the document so this may not make sense)= , > the security considerations seem to suggest using an IP ACL for determini= ng > which messages are trusted; IP ACLs are generally not recommended in favo= r > of cryptographic mechanisms at this point. IP ACLs was introduced in RFC 8029 and is reused in this document, it's jus= t one of the security mechanisms. This document is an extension to RFC 802= 9, as stated in this document, all security considerations defined in RFC 8= 029 apply to this document. Do you have any specific suggestion to the curr= ent security consideration? 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Thu, 14 Feb 2019 09:12:00 +0000 From: Alexander Vainshtein To: "spring@ietf.org" CC: Stewart Bryant , Loa Andersson , "draft-cheng-spring-mpls-path-segment@ietf.org" , "mpls@ietf.org" Thread-Topic: [spring] to progress draft-cheng-spring-mpls-path-segment Thread-Index: AQHUwRhECynjpYpi60SfZPZB3V3IGKXdkPkAgAFwWaA= Date: Thu, 14 Feb 2019 09:11:59 +0000 Message-ID: References: <0980ce7c-047c-519f-e7d5-98d32b498482@pi.nu> <9419b7d7-87ef-151f-5ed8-b0f78c6e83af@gmail.com> In-Reply-To: <9419b7d7-87ef-151f-5ed8-b0f78c6e83af@gmail.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [147.234.241.1] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: ed9a38d0-de3f-41c5-023d-08d6925c79f4 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0; PCL:0; RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600110)(711020)(4605077)(4618075)(2017052603328)(7153060)(7193020); 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boundary="_000_AM6PR03MB3830EBBF1D04E91C35E7B8C99D670AM6PR03MB3830eurp_" MIME-Version: 1.0 X-OriginatorOrg: ecitele.com X-MS-Exchange-CrossTenant-Network-Message-Id: ed9a38d0-de3f-41c5-023d-08d6925c79f4 X-MS-Exchange-CrossTenant-originalarrivaltime: 14 Feb 2019 09:11:59.8723 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 2c514a61-08de-4519-b4c0-921fef62c42a X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM6PR03MB4743 X-CFilter-Loop: Reflected Archived-At: Subject: Re: [mpls] [spring] to progress draft-cheng-spring-mpls-path-segment X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 14 Feb 2019 09:12:12 -0000 --_000_AM6PR03MB3830EBBF1D04E91C35E7B8C99D670AM6PR03MB3830eurp_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable +1. I have been following this draft from its -00 revision. The current revisi= on has resolved most of the issues I (and others) have been raised (e.g., = elimination of excessive options). >From my POV, in its current state the draft meets two basic requirements f= or the WG adoption: 1. It addresses a real and relevant problem, namely the MPLS Flow Id= entification problem discussed in general in RFC 8372 and scoped to SR-MPLS LSPs in this draft. Specifics of SR= -MPLS include the need to provide end-to-end liveness check that is one of= the requirements explicitly specified in Section 2 of RFC 8355. 2. It provides a reasonable (from my POV) approach to solution of t= his problem. I also concur with Stewart's comment about strong similarity between the a= pproach taken in this draft for SR-MPLS and generic work in progress on sy= nonymous flow labels that has been already adopted as a MPLS WG item. To me this is y= et another indication that the draft should be adopted. My 2c, Sasha Office: +972-39266302 Cell: +972-549266302 Email: Alexander.Vainshtein@ecitele.com -----Original Message----- From: spring On Behalf Of Stewart Bryant Sent: Wednesday, February 13, 2019 12:48 PM To: Loa Andersson ; spring@ietf.org; draft-cheng-spring-mpls-pa= th-segment@ietf.org Subject: Re: [spring] to progress draft-cheng-spring-mpls-path-segment I have just read the draft and agree that it should be adopted by the WG. = It solves an important problem in instrumenting and protecting an SR path.= It should be noted that we needed to do something very similar in mainstre= am MPLS via the synonymous label work which is already adopted. However SL did not address the SR case. We therefore need this path label = work to be progressed. - Stewart On 10/02/2019 08:11, Loa Andersson wrote: > Working Group, > > I have reviewed draft-cheng-spring-mpls-path-segment and as far as I > can see, it is ready for wg adoption. > > There were some comments in Bangkok, but due to the many collisions > between working groups at that meeting I couldn't attend the SPRING > f2f. > > The minutes are not clear, but as far as I understand, there is > nothing that can't be resolved in the wg process. > > /Loa _______________________________________________ spring mailing list spring@ietf.org https://www.ietf.org/mailman/listinfo/spring __________________________________________________________________________= _ This e-mail message is intended for the recipient only and contains inform= ation which is=20 CONFIDENTIAL and which may be proprietary to ECI Telecom. If you have rece= ived this=20 transmission in error, please inform us by e-mail, phone or fax, and then = delete the original=20 and all copies thereof. __________________________________________________________________________= _ --_000_AM6PR03MB3830EBBF1D04E91C35E7B8C99D670AM6PR03MB3830eurp_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

+1.

 

I have been following this draft from its -00 re= vision. The current revision has resolved most of the issues I (and others= ) have been raised (e.g., elimination of excessive options).

 

From my POV, in its current state the draft meet= s two basic requirements for the WG adoption:

1.       It addresses a real and r= elevant problem, namely the MPLS Flow Identification problem discussed in = general in RFC 8372 and scoped= to SR-MPLS LSPs in this draft. Specifics of SR-MPLS include the need to p= rovide end-to-end liveness check that is one of the requirements explicitl= y specified in Section 2 of RFC 8355. <= /p>

2.       It provides a reasonable = (from my POV) approach to  solution of this problem.

 

I also concur with Stewart’s comment about= strong similarity between the approach taken in this draft for SR-MPLS an= d generic w= ork in progress on synonymous flow labels that has been already adopte= d as a MPLS WG item.  To me this is yet another indication that the d= raft should be adopted.

 

My 2c,

Sasha

 

Office: +972-39266302

Cell:      +972-549= 266302

Email:   Alexander.Vainshtein@ecitele.= com

 

-----Original Message-----
From: spring <spring-bounces@ietf.org> On Behalf Of Stewart Bryant Sent: Wednesday, February 13, 2019 12:48 PM
To: Loa Andersson <loa@pi.nu>; spring@ietf.org; draft-cheng-spring-m= pls-path-segment@ietf.org
Subject: Re: [spring] to progress draft-cheng-spring-mpls-path-segment

=

 

I have just read the draft and agree that it sho= uld be adopted by the WG. It solves an important problem in instrumenting = and protecting an SR path.

 

It should be noted that we needed to do somethin= g very similar in mainstream MPLS via the synonymous label work which is a= lready adopted.

However SL did not address the SR case. We there= fore need this path label work to be progressed.

 

- Stewart

 

On 10/02/2019 08:11, Loa Andersson wrote:

> Working Group,

> 

> I have reviewed draft-cheng-spring-mpls-pat= h-segment and as far as I

> can see, it is ready for wg adoption.<= /o:p>

> 

> There were some comments in Bangkok, but du= e to the many collisions

> between working groups at that meeting I co= uldn't attend the SPRING

> f2f.

> 

> The minutes are not clear, but as far as I = understand, there is

> nothing that can't be resolved in the wg pr= ocess.

> 

> /Loa

 

_______________________________________________<= o:p>

spring mailing list

spring@ietf.org

https://www= .ietf.org/mailman/listinfo/spring


__________________________________________________________________________= _

This e-mail message is intended for the recipient only and contains inform= ation which is
CONFIDENTIAL and which may be proprietary to ECI Telecom. If you have rece= ived this
transmission in error, please inform us by e-mail, phone or fax, and then = delete the original
and all copies thereof.
__________________________________________________________________________= _
--_000_AM6PR03MB3830EBBF1D04E91C35E7B8C99D670AM6PR03MB3830eurp_-- From nobody Thu Feb 14 11:38:00 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 6469613119D; Thu, 14 Feb 2019 11:37:42 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.988 X-Spam-Level: X-Spam-Status: No, score=-1.988 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, T_KAM_HTML_FONT_INVALID=0.01, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id SnvI1dj6Hl0l; Thu, 14 Feb 2019 11:37:38 -0800 (PST) Received: from mail-lf1-x129.google.com (mail-lf1-x129.google.com [IPv6:2a00:1450:4864:20::129]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 914F413119C; Thu, 14 Feb 2019 11:37:37 -0800 (PST) Received: by mail-lf1-x129.google.com with SMTP id e27so5420691lfj.8; Thu, 14 Feb 2019 11:37:37 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=mfl+sCwxkGvJxJERq3lMvJ/wolMyQgf0FZvPUf2dJIY=; b=fsh8cuIxLDW1J+LbBypZzQPi/MG8c8uJKMkmyedGx1FUzKFSMg2D/OERs3lXUqXb5q kfpz564de9cC9WszxvSlfrU9e7Uyr+bxz/KkKbellb7p8aVu7ZHnmkhHywXOzQ9mdL2D 60Q4zbYPf+pOmNUnAcEFoKypC6LU2dsGcKv3dQWftarMz2OW9ZLU4cNrlHsakRnf42ga oeLoSIky3yk3ohU4fd0XkTywAoFVYwvgkcZjGAv9O8mGwlHFGwwlXJ7j89kLkxK2wBYx bJ93apwJPbv9fcQ1Ns7xg4Vau4muLAb6DeG2ASs5A0Zuh8SknZCTFLoPo2/HwoABFlTU 3Now== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=mfl+sCwxkGvJxJERq3lMvJ/wolMyQgf0FZvPUf2dJIY=; b=IfPpreWaZ2mHklprWBGnKZAnpR88Ejsn1ZJ8LvRMTewcyFCV6lWEtQ+E5caMJPDJQp TGMrl8EWthlNugE7uf3wDU0tQVI8anS+AKMsxjbrI0sZ8A40XfXE8EUYla3TTMXuQ9+c 3ERaz+TI49NWsJQcnW7rZHvreoIxMKXomF/+yf9QNdg32CJY4nsXOnL5Oe7ax+lPrlna yewFSElHIDxcIRyJiU1cfzb6GFDECQN5Z2LrqUHTdfvzlYglGoMMEbvEnKMl78TDPGhp Alck2YrmaILpRwThFa1Om+/mL14SEKhF344Xx2cu//J+0JDY/o8qrXVsSo0Z7UQFxt6X AXvQ== X-Gm-Message-State: AHQUAuadN2uVGRtsiM9AXkp7+k8khk7UwKQBj7iIiwe67nDERyh46V25 QoYL14awJJE8UyVPm1dXpwWSjVZYui+EVvKO2kc= X-Google-Smtp-Source: AHgI3IY8tRtlYL7VXzGJd22+yjcXLkWzL7gPo16W/t3QhbsfvPOXiYLC7Dl+4bj+1uVnJnUJjwt52XVYExIQRArHsRg= X-Received: by 2002:a19:9dd1:: with SMTP id g200mr3278526lfe.127.1550173055558; Thu, 14 Feb 2019 11:37:35 -0800 (PST) MIME-Version: 1.0 References: <0980ce7c-047c-519f-e7d5-98d32b498482@pi.nu> <9419b7d7-87ef-151f-5ed8-b0f78c6e83af@gmail.com> In-Reply-To: From: Greg Mirsky Date: Thu, 14 Feb 2019 11:37:24 -0800 Message-ID: To: Alexander Vainshtein Cc: "spring@ietf.org" , Stewart Bryant , "draft-cheng-spring-mpls-path-segment@ietf.org" , "mpls@ietf.org" , Loa Andersson Content-Type: multipart/alternative; boundary="000000000000512b060581dfca9d" Archived-At: Subject: Re: [mpls] [spring] to progress draft-cheng-spring-mpls-path-segment X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 14 Feb 2019 19:37:43 -0000 --000000000000512b060581dfca9d Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Dear All, I concur with all what has been said in support of the adoption of this draft by SPRING WG. The document is well-written, addresses the real problem in SR-MPLS, and the proposed solution is technically viable. My comments and questions are entirely for further discussion: - would the draft be expanded to demonstrate how "the Path Segment may be used to identify an SR-MPLS Policy, its Candidate-Path (CP) or a SID List (SL)"? - as many use cases for the Path Segment are related to OAM operations, it would be helpful to expand on the use of GAL and the Path Segment. Regards, Greg On Thu, Feb 14, 2019 at 1:12 AM Alexander Vainshtein < Alexander.Vainshtein@ecitele.com> wrote: > +1. > > > > I have been following this draft from its -00 revision. The current > revision has resolved most of the issues I (and others) have been raised > (e.g., elimination of excessive options). > > > > From my POV, in its current state the draft meets two basic requirements > for the WG adoption: > > 1. It addresses a real and relevant problem, namely the MPLS Flow > Identification problem discussed in general in RFC 8372 > and scoped to SR-MPLS LSPs in this > draft. Specifics of SR-MPLS include the need to provide end-to-end livene= ss > check that is one of the requirements explicitly specified in Section 2 o= f RFC > 8355 . > > 2. It provides a reasonable (from my POV) approach to solution of > this problem. > > > > I also concur with Stewart=E2=80=99s comment about strong similarity betw= een the > approach taken in this draft for SR-MPLS and generic work in progress on > synonymous flow labels > that has > been already adopted as a MPLS WG item. To me this is yet another > indication that the draft should be adopted. > > > > My 2c, > > Sasha > > > > Office: +972-39266302 > > Cell: +972-549266302 > > Email: Alexander.Vainshtein@ecitele.com > > > > -----Original Message----- > From: spring On Behalf Of Stewart Bryant > Sent: Wednesday, February 13, 2019 12:48 PM > To: Loa Andersson ; spring@ietf.org; > draft-cheng-spring-mpls-path-segment@ietf.org > Subject: Re: [spring] to progress draft-cheng-spring-mpls-path-segment > > > > I have just read the draft and agree that it should be adopted by the WG. > It solves an important problem in instrumenting and protecting an SR path= . > > > > It should be noted that we needed to do something very similar in > mainstream MPLS via the synonymous label work which is already adopted. > > However SL did not address the SR case. We therefore need this path label > work to be progressed. > > > > - Stewart > > > > On 10/02/2019 08:11, Loa Andersson wrote: > > > Working Group, > > > > > > I have reviewed draft-cheng-spring-mpls-path-segment and as far as I > > > can see, it is ready for wg adoption. > > > > > > There were some comments in Bangkok, but due to the many collisions > > > between working groups at that meeting I couldn't attend the SPRING > > > f2f. > > > > > > The minutes are not clear, but as far as I understand, there is > > > nothing that can't be resolved in the wg process. > > > > > > /Loa > > > > _______________________________________________ > > spring mailing list > > spring@ietf.org > > https://www..ietf.org/mailman/listinfo/spring > > > _________________________________________________________________________= __ > > This e-mail message is intended for the recipient only and contains > information which is > CONFIDENTIAL and which may be proprietary to ECI Telecom. If you have > received this > transmission in error, please inform us by e-mail, phone or fax, and then > delete the original > and all copies thereof. > _________________________________________________________________________= __ > _______________________________________________ > spring mailing list > spring@ietf.org > https://www.ietf.org/mailman/listinfo/spring > --000000000000512b060581dfca9d Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Dear Al= l,
I concur with all what has been said in support of the adoption of t= his draft by SPRING WG. The document is well-written, addresses the real pr= oblem in SR-MPLS, and the proposed solution is technically viable.
My comments and questions are entirely for further discussion:
=
  • would the=C2=A0draft be expanded to demonstrate how "the Path = Segment may be used to identify an SR-MPLS Policy, its Candidate-Path (CP) = or a SID List (SL)"?
  • as many use cases for the Path Segment ar= e related to OAM operations, it would be helpful to expand on the use of GA= L and the Path Segment.
Regards,
Greg

On Thu, Feb 14, 2019 at 1:12 AM Alexander Vainshtein <Alexander.Vainshtein@ecit= ele.com> wrote:

+1.

=C2=A0

I have been following = this draft from its -00 revision. The current revision has resolved most of= the issues I (and others) have been raised (e.g., elimination of excessive= options).

=C2=A0

From my POV, in its cu= rrent state the draft meets two basic requirements for the WG adoption:<= /u>

1.=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 It addresses a real and relev= ant problem, namely the MPLS Flow Identification problem discussed in gener= al in RFC 83= 72 and scoped to SR-MPLS LSPs in this draft. Specifics of SR-MPLS inclu= de the need to provide end-to-end liveness check that is one of the require= ments explicitly specified in Section 2 of RFC 8355<= /a>.

2.=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 It provides a reasonable (fro= m my POV) approach to =C2=A0solution of this problem.

=C2=A0

I also concur with Ste= wart=E2=80=99s comment about strong similarity between the approach taken i= n this draft for SR-MPLS and generic work in progress on synonymous flow labels that has bee= n already adopted as a MPLS WG item.=C2=A0 To me this is yet another indica= tion that the draft should be adopted.

=C2=A0

My 2c,

Sasha

=C2=A0

Office: +972-39266302<= u>

Cell:=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0 +972-549266302

Email:=C2=A0=C2=A0 Alexande= r.Vainshtein@ecitele.com

=C2=A0

-----Original Message-= ----
From: spring <spring-bounces@ietf.org> On Behalf Of Stewart Bryant
Sent: Wednesday, February 13, 2019 12:48 PM
To: Loa Andersson <loa@pi= .nu>; spring@ie= tf.org; draft-cheng-spring-mpls-path-segment@ietf.org
Subject: Re: [spring] to progress draft-cheng-spring-mpls-path-segment

=C2=A0

I have just read the d= raft and agree that it should be adopted by the WG. It solves an important = problem in instrumenting and protecting an SR path.

=C2=A0

It should be noted tha= t we needed to do something very similar in mainstream MPLS via the synonym= ous label work which is already adopted.

However SL did not add= ress the SR case. We therefore need this path label work to be progressed.<= u>

=C2=A0

- Stewart

=C2=A0

On 10/02/2019 08:11, L= oa Andersson wrote:

> Working Group,=

>=C2=A0

> I have reviewed d= raft-cheng-spring-mpls-path-segment and as far as I

> can see, it is re= ady for wg adoption.

>=C2=A0

> There were some c= omments in Bangkok, but due to the many collisions

> between working g= roups at that meeting I couldn't attend the SPRING

> f2f.

>=C2=A0

> The minutes are n= ot clear, but as far as I understand, there is

> nothing that can&= #39;t be resolved in the wg process.

>=C2=A0

> /Loa

=C2=A0

______________________= _________________________

spring mailing list=

spring@ietf.org

https://www..ietf.org/mailman/listinfo/spri= ng


___________________________________________________________________________=

This e-mail message is intended for the recipient only and contains informa= tion which is
CONFIDENTIAL and which may be proprietary to ECI Telecom. If you have recei= ved this
transmission in error, please inform us by e-mail, phone or fax, and then d= elete the original
and all copies thereof.
___________________________________________________________________________=
_______________________________________________
spring mailing list
spring@ietf.org https://www.ietf.org/mailman/listinfo/spring
--000000000000512b060581dfca9d-- From nobody Fri Feb 15 00:35:06 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 17CD6130F28; Fri, 15 Feb 2019 00:35:06 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.201 X-Spam-Level: X-Spam-Status: No, score=-4.201 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, SPF_PASS=-0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id mb43B8rIxUor; Fri, 15 Feb 2019 00:35:04 -0800 (PST) Received: from huawei.com (lhrrgout.huawei.com [185.176.76.210]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 884B7130E7E; Fri, 15 Feb 2019 00:35:04 -0800 (PST) Received: from lhreml708-cah.china.huawei.com (unknown [172.18.7.108]) by Forcepoint Email with ESMTP id 91253463B076B3A3321B; Fri, 15 Feb 2019 08:35:02 +0000 (GMT) Received: from lhreml708-chm.china.huawei.com (10.201.108.57) by lhreml708-cah.china.huawei.com (10.201.108.49) with Microsoft SMTP Server (TLS) id 14.3.408.0; Fri, 15 Feb 2019 08:35:01 +0000 Received: from lhreml708-chm.china.huawei.com (10.201.108.57) by lhreml708-chm.china.huawei.com (10.201.108.57) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1591.10; Fri, 15 Feb 2019 08:35:02 +0000 Received: from DGGEML405-HUB.china.huawei.com (10.3.17.49) by lhreml708-chm.china.huawei.com (10.201.108.57) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA_P256) id 15.1.1591.10 via Frontend Transport; Fri, 15 Feb 2019 08:35:01 +0000 Received: from DGGEML510-MBX.china.huawei.com ([169.254.2.6]) by dggeml405-hub.china.huawei.com ([10.3.17.49]) with mapi id 14.03.0415.000; Fri, 15 Feb 2019 16:34:54 +0800 From: Mach Chen To: "mpls@ietf.org" CC: "mpls-chairs@ietf.org" Thread-Topic: MPLS-RT review on draft-nainar-mpls-rfc8287-len-clarification-00 Thread-Index: AdTFCCSJ+LGMIYq7QLWdBvABpp77Vg== Date: Fri, 15 Feb 2019 08:34:54 +0000 Message-ID: Accept-Language: en-US, zh-CN Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.111.194.201] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: Subject: [mpls] MPLS-RT review on draft-nainar-mpls-rfc8287-len-clarification-00 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 15 Feb 2019 08:35:06 -0000 Hi all, I have done the MPLS-RT review on draft-nainar-mpls-rfc8287-len-clarificati= on-00. This is a very short and well-written draft that addresses the clarify how = the length of the Segment ID Sub-TLVs should be computed to include in the = Length field of the Sub-TLVs which may result in interoperability issues. This is a useful document and ready for WG adoption, even for WG last call = :-).=20 Best regards, Mach From nobody Fri Feb 15 16:41:07 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 1B4E71289FA; Fri, 15 Feb 2019 16:40:58 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.28 X-Spam-Level: X-Spam-Status: No, score=-1.28 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_RP_RNBL=1.31, SPF_PASS=-0.001, T_KAM_HTML_FONT_INVALID=0.01] autolearn=no autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id oj-0DYJIwxuT; Fri, 15 Feb 2019 16:40:55 -0800 (PST) Received: from cmccmta2.chinamobile.com (cmccmta2.chinamobile.com [221.176.66.80]) by ietfa.amsl.com (Postfix) with ESMTP id 1CE5E127287; Fri, 15 Feb 2019 16:40:53 -0800 (PST) Received: from spf.mail.chinamobile.com (unknown[172.16.121.5]) by rmmx-syy-dmz-app05-12005 (RichMail) with SMTP id 2ee55c675c136a9-855ce; Sat, 16 Feb 2019 08:40:51 +0800 (CST) X-RM-TRANSID: 2ee55c675c136a9-855ce X-RM-TagInfo: emlType=0 X-RM-SPAM-FLAG: 00000000 Received: from cmcc (unknown[111.32.143.115]) by rmsmtp-syy-appsvr03-12003 (RichMail) with SMTP id 2ee35c675c115e8-a64b5; Sat, 16 Feb 2019 08:40:51 +0800 (CST) X-RM-TRANSID: 2ee35c675c115e8-a64b5 From: "Weiqiang Cheng" To: "'Greg Mirsky'" , "'Alexander Vainshtein'" Cc: , "'Stewart Bryant'" , , , "'Loa Andersson'" References: <0980ce7c-047c-519f-e7d5-98d32b498482@pi.nu> <9419b7d7-87ef-151f-5ed8-b0f78c6e83af@gmail.com> In-Reply-To: Date: Sat, 16 Feb 2019 08:40:49 +0800 Message-ID: <050301d4c590$445f5d50$cd1e17f0$@com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0504_01D4C5D3.52829D50" X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: AdTEnLWGUqstE6FFTsuVHdcBGm8kCgA8RPPw Content-Language: zh-cn Archived-At: Subject: [mpls] =?utf-8?b?562U5aSNOiBbc3ByaW5nXSB0byBwcm9ncmVzcyBkcmFm?= =?utf-8?q?t-cheng-spring-mpls-path-segment?= X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 16 Feb 2019 00:40:58 -0000 This is a multi-part message in MIME format. ------=_NextPart_000_0504_01D4C5D3.52829D50 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Hi Greg, Thanks a lot for your comments. My comments are in-line. =20 B.R. Weiqiang Cheng =20 =E5=8F=91=E4=BB=B6=E4=BA=BA: Greg Mirsky [mailto:gregimirsky@gmail.com]=20 =E5=8F=91=E9=80=81=E6=97=B6=E9=97=B4: 2019=E5=B9=B42=E6=9C=8815=E6=97=A5 = 3:37 =E6=94=B6=E4=BB=B6=E4=BA=BA: Alexander Vainshtein =E6=8A=84=E9=80=81: spring@ietf.org; Stewart Bryant; = draft-cheng-spring-mpls-path-segment@ietf.org; mpls@ietf.org; Loa = Andersson =E4=B8=BB=E9=A2=98: Re: [spring] to progress = draft-cheng-spring-mpls-path-segment =20 Dear All, I concur with all what has been said in support of the adoption of this = draft by SPRING WG. The document is well-written, addresses the real = problem in SR-MPLS, and the proposed solution is technically viable. My comments and questions are entirely for further discussion: * would the draft be expanded to demonstrate how "the Path Segment may = be used to identify an SR-MPLS Policy, its Candidate-Path (CP) or a SID = List (SL)"? [Weiqiang] Yes, It is necessary and we will add some text to demonstrate = this in the future version.=20 * as many use cases for the Path Segment are related to OAM operations, = it would be helpful to expand on the use of GAL and the Path Segment. [Weiqiang] It is always helpful to have more use cases. However, = The GAL is used today in MPLS-TP LSPs to flag the G-Ach and is used for = OAM packets only while the Path segment is used for data packets for the = each traffic flow. It is a little bit different.=20 Regards, Greg =20 On Thu, Feb 14, 2019 at 1:12 AM Alexander Vainshtein = wrote: +1. =20 I have been following this draft from its -00 revision. The current = revision has resolved most of the issues I (and others) have been raised = (e.g., elimination of excessive options). =20 >From my POV, in its current state the draft meets two basic requirements = for the WG adoption: 1. It addresses a real and relevant problem, namely the MPLS Flow = Identification problem discussed in general in RFC 8372 = and scoped to SR-MPLS LSPs in = this draft. Specifics of SR-MPLS include the need to provide end-to-end = liveness check that is one of the requirements explicitly specified in = Section 2 of RFC 8355 .=20 2. It provides a reasonable (from my POV) approach to solution of = this problem. =20 I also concur with Stewart=E2=80=99s comment about strong similarity = between the approach taken in this draft for SR-MPLS and generic work in = progress on synonymous flow labels = that has = been already adopted as a MPLS WG item. To me this is yet another = indication that the draft should be adopted. =20 My 2c, Sasha =20 Office: +972-39266302 Cell: +972-549266302 Email: Alexander.Vainshtein@ecitele.com =20 -----Original Message----- From: spring On Behalf Of Stewart Bryant Sent: Wednesday, February 13, 2019 12:48 PM To: Loa Andersson >; spring@ietf.org; = draft-cheng-spring-mpls-path-segment@ietf.org Subject: Re: [spring] to progress draft-cheng-spring-mpls-path-segment =20 I have just read the draft and agree that it should be adopted by the = WG. It solves an important problem in instrumenting and protecting an SR = path. =20 It should be noted that we needed to do something very similar in = mainstream MPLS via the synonymous label work which is already adopted.=20 However SL did not address the SR case. We therefore need this path = label work to be progressed. =20 - Stewart =20 On 10/02/2019 08:11, Loa Andersson wrote: > Working Group, >=20 > I have reviewed draft-cheng-spring-mpls-path-segment and as far as I=20 > can see, it is ready for wg adoption. >=20 > There were some comments in Bangkok, but due to the many collisions=20 > between working groups at that meeting I couldn't attend the SPRING=20 > f2f. >=20 > The minutes are not clear, but as far as I understand, there is=20 > nothing that can't be resolved in the wg process. >=20 > /Loa =20 _______________________________________________ spring mailing list spring@ietf.org = https://www..ietf.org/mailman/listinfo/spring _________________________________________________________________________= __ This e-mail message is intended for the recipient only and contains = information which is=20 CONFIDENTIAL and which may be proprietary to ECI Telecom. If you have = received this=20 transmission in error, please inform us by e-mail, phone or fax, and = then delete the original=20 and all copies thereof. _________________________________________________________________________= __ _______________________________________________ spring mailing list spring@ietf.org https://www.ietf.org/mailman/listinfo/spring ------=_NextPart_000_0504_01D4C5D3.52829D50 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable

Hi Greg,

Thanks a lot for your comments.

My comments are in-line.

 

B.R.

Weiqiang Cheng

 

=E5=8F=91=E4=BB=B6=E4=BA=BA: Greg Mirsky [mailto:gregimirsky@gmail.com] =
=E5=8F=91=E9=80=81=E6=97=B6=E9=97=B4: 2019=E5=B9=B42=E6=9C=8815=E6=97=A5 3:37
=E6=94=B6=E4=BB=B6=E4=BA=BA: Alexander = Vainshtein
=E6=8A=84=E9=80=81: spring@ietf.org; Stewart = Bryant; draft-cheng-spring-mpls-path-segment@ietf.org; mpls@ietf.org; = Loa Andersson
=E4=B8=BB=E9=A2=98: Re: [spring] to progress = draft-cheng-spring-mpls-path-segment

 

Dear = All,

I = concur with all what has been said in support of the adoption of this = draft by SPRING WG. The document is well-written, addresses the real = problem in SR-MPLS, and the proposed solution is technically = viable.

My comments and questions are entirely for further = discussion:

  • would the draft be expanded to = demonstrate how "the Path Segment may be used to identify an = SR-MPLS Policy, its Candidate-Path (CP) or a SID List = (SL)"?

[Weiqiang] Yes, It is necessary and we will add some text to = demonstrate this in the future version.

  • as many use cases for the Path Segment = are related to OAM operations, it would be helpful to expand on the use = of GAL and the Path Segment.

=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =C2=A0[Weiqiang] It is always helpful to have more use cases. However, The = GAL is used today in MPLS-TP LSPs to flag the G-Ach and is used for OAM = packets only while the Path segment is used for data packets for the = each traffic flow. It is a little bit different. =

Regards,

Greg

 

On Thu, Feb 14, 2019 at 1:12 AM = Alexander Vainshtein <Alexander.Vainshtein@eci= tele.com> wrote:

+1.

 

I have = been following this draft from its -00 revision. The current revision = has resolved most of the issues I (and others) have been raised (e.g., = elimination of excessive options).

 

From = my POV, in its current state the draft meets two basic requirements for = the WG adoption:

1.       It addresses a real and relevant problem, namely the MPLS = Flow Identification problem discussed in general in RFC = 8372 and scoped to SR-MPLS LSPs in this draft. Specifics of SR-MPLS = include the need to provide end-to-end liveness check that is one of the = requirements explicitly specified in Section 2 of RFC = 8355.

2.       It provides a reasonable (from my POV) approach to =  solution of this problem.

 

I also = concur with Stewart=E2=80=99s comment about strong similarity between = the approach taken in this draft for SR-MPLS and generic work in progress on synonymous flow labels that = has been already adopted as a MPLS WG item.  To me this is yet = another indication that the draft should be = adopted.

 

My = 2c,

Sasha

 

Office: +972-39266302

Cell:      = +972-549266302

Email:   Alexander.Vainshtein@ecitele.com<= /p>

 

-----Original Message-----
From: spring <spring-bounces@ietf.org> On Behalf Of Stewart = Bryant
Sent: Wednesday, February 13, 2019 12:48 PM
To: Loa = Andersson <loa@pi..nu>; spring@ietf.org; draft-cheng-spring-mpls-path-segment@ietf.org
Su= bject: Re: [spring] to progress = draft-cheng-spring-mpls-path-segment

 

I have = just read the draft and agree that it should be adopted by the WG. It = solves an important problem in instrumenting and protecting an SR = path.

 

It = should be noted that we needed to do something very similar in = mainstream MPLS via the synonymous label work which is already adopted. =

However SL did not address the SR case. We therefore need = this path label work to be progressed.

 

- = Stewart

 

On = 10/02/2019 08:11, Loa Andersson wrote:

> = Working Group,

> I = have reviewed draft-cheng-spring-mpls-path-segment and as far as I =

> = can see, it is ready for wg adoption.

> = There were some comments in Bangkok, but due to the many collisions =

> = between working groups at that meeting I couldn't attend the SPRING =

> = f2f.

> = The minutes are not clear, but as far as I understand, there is =

> = nothing that can't be resolved in the wg = process.

> = /Loa

 

_______________________________________________

spring mailing list

spring@ietf.org

https://www..ietf.org/mai= lman/listinfo/spring


________________________________________________________= ___________________

This e-mail message is intended for the = recipient only and contains information which is
CONFIDENTIAL and = which may be proprietary to ECI Telecom. If you have received this =
transmission in error, please inform us by e-mail, phone or fax, and = then delete the original
and all copies = thereof.
_____________________________________________________________= ______________

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https://www.ietf.org/mailman/listinfo/spring

------=_NextPart_000_0504_01D4C5D3.52829D50-- From nobody Sat Feb 16 12:28:33 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 59BE2130EBA; Sat, 16 Feb 2019 12:28:26 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2 X-Spam-Level: X-Spam-Status: No, score=-2 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=mit.edu Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id fLByxz6dWhPJ; Sat, 16 Feb 2019 12:28:23 -0800 (PST) Received: from NAM01-BY2-obe.outbound.protection.outlook.com (mail-eopbgr810097.outbound.protection.outlook.com [40.107.81.97]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 79AE212F1A2; 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ietf.org; dkim=none (message not signed) header.d=none;ietf.org; dmarc=bestguesspass action=none header.from=mit.edu; Received-SPF: Pass (protection.outlook.com: domain of mit.edu designates 18.9.28.11 as permitted sender) receiver=protection.outlook.com; client-ip=18.9.28.11; helo=outgoing.mit.edu; Received: from outgoing.mit.edu (18.9.28.11) by BY2NAM03FT039.mail.protection.outlook.com (10.152.85.205) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.20.1580.10 via Frontend Transport; Sat, 16 Feb 2019 20:28:20 +0000 Received: from kduck.mit.edu (24-107-191-124.dhcp.stls.mo.charter.com [24.107.191.124]) (authenticated bits=56) (User authenticated as kaduk@ATHENA.MIT.EDU) by outgoing.mit.edu (8.14.7/8.12.4) with ESMTP id x1GKSGPW032739 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sat, 16 Feb 2019 15:28:18 -0500 Date: Sat, 16 Feb 2019 14:28:16 -0600 From: Benjamin Kaduk To: Mach Chen CC: Linda Dunbar , "secdir@ietf.org" , "mpls@ietf.org" , "draft-ietf-mpls-lsp-ping-lag-multipath.all@ietf.org" , "ietf@ietf.org" Message-ID: <20190216202815.GD82217@kduck.mit.edu> References: <154455986336.13151.8483284555885294015@ietfa.amsl.com> <20190126211729.GJ49072@kduck.mit.edu> MIME-Version: 1.0 Content-Type: text/plain; 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Ip=[18.9.28.11]; Helo=[outgoing.mit.edu] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY4PR01MB3287 Archived-At: Subject: Re: [mpls] [secdir] Secdir last call review of draft-ietf-mpls-lsp-ping-lag-multipath-05 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 16 Feb 2019 20:28:26 -0000 Hi Mach, My apologies as well for the delay. On Thu, Feb 14, 2019 at 03:02:07AM +0000, Mach Chen wrote: > Hi Benjamin, > > Sorry for the delayed response! > > Please see my response inline... > > > -----Original Message----- > > From: Benjamin Kaduk [mailto:kaduk@mit.edu] > > Sent: Sunday, January 27, 2019 5:17 AM > > To: Mach Chen > > Cc: Linda Dunbar ; secdir@ietf.org; > > mpls@ietf.org; draft-ietf-mpls-lsp-ping-lag-multipath.all@ietf.org; > > ietf@ietf.org > > Subject: Re: [secdir] Secdir last call review of draft-ietf-mpls-lsp-ping-lag- > > multipath-05 > > > > On Fri, Dec 14, 2018 at 02:11:21AM +0000, Mach Chen wrote: > > > Hi Linda, > > > > > > Thanks for the review! > > > > > > Some responses inline... > > > > > > > -----Original Message----- > > > > From: ietf [mailto:ietf-bounces@ietf.org] On Behalf Of Linda Dunbar > > > > Sent: Wednesday, December 12, 2018 4:24 AM > > > > To: secdir@ietf.org > > > > Cc: mpls@ietf.org; > > > > draft-ietf-mpls-lsp-ping-lag-multipath.all@ietf.org; > > > > ietf@ietf.org > > > > Subject: Secdir last call review of > > > > draft-ietf-mpls-lsp-ping-lag-multipath-05 > > > > > > > > Reviewer: Linda Dunbar > > > > Review result: Ready > > > > > > > > I have reviewed this document as part of the security directorate's > > > > ongoing effort to review all IETF documents being processed by the > > > > IESG. These comments were written primarily for the benefit of the > > > > security area directors. Document editors and WG chairs should > > > > treat these comments just like any other last call comments. > > > > > > > > The summary of the review is Ready with comment > > > > > > > > The described mechanism for LSP Multipath Ping is very clear. The > > > > Security Consideration re-uses the description of RFC8029, which is > > > > very comprehensive. > > > > It would be better if the draft describes how to prevent > > > > intermediate LSRs in between the Initiating LSR and Responding LSR > > > > from mis-using the detailed link information (e.g. forwarding to > > somewhere else). > > > > > > The Echo Request and Reply messages are directly exchanged between the > > Initiating LSR and the Responding LSR, those intermediate LSRs just forward > > the messages as normal packets, they will not see the detailed link > > information unless if they inspect and do DPI on every packet forwarded by > > them. > > > > > > The detailed link information is supplied to the Initiating LSR for using, the > > intermediate LSRs will not try to use it even if they received the information, > > because there is no corresponding Echo Request to the received Echo Reply. > > > > The intermediate LSRs still will have access to the plaintext information, even > > if in normal operation they do not need to act upon that information. > > Generally in this sort of situation we will either explicitly state that the > > intermediate nodes must be trusted to not abuse the information in > > question, or provide some mechanism for end-to-end confidentiality > > protection. > > "Intermediate nodes must be trusted to not abuse the information" is normally assumed. For the intermediate nodes, there is no different between the Echo Reply messages and any other data traffic, control messages. They just forward the Echo Reply messages as normal packets. I am not sure it needs to explicitly state this. Do you suggest to add such a statement in the security consideration section? The concern is not about the normal operation, but rather about abnormal operation, e.g., if an intermediate node gets compromised by an attacker. We need to document the new abilities an attacker gets, when comparing the original case of "an attacker compromises an intermediate node that is using MPLS without this mechanism" to the new case of "an attacker compromises an intermediate node that is using MPLS with this mechanism". So, while I do suggest adding a statement to the security considerations section, the statement I want does not relate to the normal operation case (when intermediate nodes ignore the contents of the message). > > > > Also (noting that I only skimmed the document so this may not make sense), > > the security considerations seem to suggest using an IP ACL for determining > > which messages are trusted; IP ACLs are generally not recommended in favor > > of cryptographic mechanisms at this point. > > IP ACLs was introduced in RFC 8029 and is reused in this document, it's I did not find a clear and explicit declaration in RFC 8029 of the concept of an IP ACL; I assume you are referring to: To protect against unauthorized sources using MPLS echo request messages to obtain network information, it is RECOMMENDED that implementations provide a means of checking the source addresses of MPLS echo request messages against an access list before accepting the message. I do not think anyone is going to say "do not filter based on IP source address", but there would be general skepticism about relying upon it as a sole security mechanism. > just one of the security mechanisms. This document is an extension to (Could you remind me of the other mechanisms? I don't think I have a good handle on them.) > RFC 8029, as stated in this document, all security considerations defined > in RFC 8029 apply to this document. Do you have any specific suggestion > to the current security consideration? I am mostly just lamenting the state of affairs; this is a sufficiently incremental change that it is inappropriate to require dramatic changes in the security mechanisms. -Ben From nobody Sat Feb 16 13:07:42 2019 Return-Path: X-Original-To: mpls@ietf.org Delivered-To: mpls@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id B6E72130FC5; Sat, 16 Feb 2019 13:07:34 -0800 (PST) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: Al Morton To: Cc: mpls@ietf.org, ietf@ietf.org, draft-ietf-mpls-sr-over-ip.all@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 6.91.0 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <155035125470.28448.13188042604940095760@ietfa.amsl.com> Date: Sat, 16 Feb 2019 13:07:34 -0800 Archived-At: Subject: [mpls] Opsdir last call review of draft-ietf-mpls-sr-over-ip-02 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 16 Feb 2019 21:07:35 -0000 Reviewer: Al Morton Review result: Has Nits Thanks for preparing this draft. Providing transition methods is very welcome to Operations. These comments are best viewed with a monospace font, and should be treated as any Last Call comments (and optional). There seem to be a few more opportunities to employ Requirements Language in this draft (currently only 3 MUSTs and 2 MAYs), to improve the consistency of implementations and subsequent adoption in operations. For example: Section 2: o Incremental deployment of the SR-MPLS technology may be facilitated by tunneling SR-MPLS packets across parts of a network that are not SR-MPLS enabled using an IP tunneling mechanism such as MPLS-in-UDP [RFC7510]. The tunnel destination address is the ^^^^ address of the next SR-MPLS capable node along the path (i.e., the egress of the active node segment). This is shown in Figure 1. Setting the Dst address correctly seems to be a requirement, because this material in Section 2 is referenced later, in 3.2.3. This seems a reasonable spot for s/is/SHOULD be/ at least. Section 3.1 FIB construction relies on about 5 drafts: much work in progress, just noting dependencies (no action) SRGB - ?? spell-out at first use Section 3.2.3. Additional Forwarding Procedures ... IP Header Fields: When encapsulating an MPLS packet in UDP, the resulting packet is further encapsulated in IP for transmission. IPv4 or IPv6 may be used according to the capabilities of the network. The address fields are set as described in Section 2. ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ The other IP header fields (such as DSCP code point, or IPv6 Flow Label) on each UDP-encapsulated segment can be set according to ^^^^^^^^^^ the operator's policy: Suggest: s/can be set/SHOULD be configurable/ From nobody Sat Feb 16 13:24:33 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 73C1F1200ED; Sat, 16 Feb 2019 13:24:24 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.988 X-Spam-Level: X-Spam-Status: No, score=-1.988 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, T_KAM_HTML_FONT_INVALID=0.01, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ocFlxJRCdH4i; Sat, 16 Feb 2019 13:24:22 -0800 (PST) Received: from mail-lj1-x22c.google.com (mail-lj1-x22c.google.com [IPv6:2a00:1450:4864:20::22c]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 9C2F7126F72; Sat, 16 Feb 2019 13:24:21 -0800 (PST) Received: by mail-lj1-x22c.google.com with SMTP id w6so6462320ljd.7; Sat, 16 Feb 2019 13:24:21 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=VaBceLmBUPvYrZQD/6sAcUTK+VFMky4elCm1aGgl8Ws=; b=RVlmXn+nNRrHwvjeJy5ua0/izXoegC2gKv6hLS+xCywdoMZoLEcaO7AsNWCM5xOYEb edtKujjkEycD8LXQBqHx+e1YMjUa6rnEkWURntbVmLFYB+ZSVBKYJezYRmg5/PyFsnz4 +sXKQp5+8ztxcQPeOpPtzOPBkJ0sBz4TSEUE6CQwIQ1neKvmJV5eQ3NOFn4WP9vqL73I VRjItwg3YWWCBGiEBfP3oiLaztszMSlPOCBwsm0Zn0M7GqubfF81YHr4r+QpYZ979miP Jh8h0SvNOr2FMMRuEwt/qouMt4ebsX2Gr3JKjRUW8zW8/CspcQhOZKF/YDBEBV9wsG+X Juew== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=VaBceLmBUPvYrZQD/6sAcUTK+VFMky4elCm1aGgl8Ws=; b=PVw/FKeBCB5nQlGEDjvUCJyxKJwISpkQzw6hotEQdabre8IuLya2/ZKZdQjctLCUX6 JvUXSjpNBG4uiPHzwuNBdpMKDa2mMKqadIkOO3b0N9wkqqIUfJPVdWpCsUUQaeK/ysIk 6fRrZaMy484w5G5SNZeD581MqRSJzNyHcNdmmXlJnKJkb1N49C4BqLxYj/tS+xpBNi1F sqbGiHhkgQmpdmuSlCt9KG4pHogakyihiOMKf8Ch7jmi6kT/fBfmqieoyee9utL3jH/j BfKMRFSQ618ijG7B5cwWwAewJyvlCD4XhRwjls2ORoIt5v/wEOV1QecAUHTxF2836POB Z/Xg== X-Gm-Message-State: AHQUAuaeaXPjH9clS3nejmmmA5nfs+Myowplo01BW0CwMH/A1kIXx4r/ VNkdudZTVrwLVefPMKf+WOr12s+IgQc/xeW0Tq4= X-Google-Smtp-Source: AHgI3IYrL+6U/iN9SFVsia9KADU6RpOv0XOdGb2ENNclbvyB2/abmNzQyEDGcF0A1B7+cPHCNojwcdXZ95lf1b3ne2c= X-Received: by 2002:a2e:81a:: with SMTP id 26-v6mr9514893lji.14.1550352259455; Sat, 16 Feb 2019 13:24:19 -0800 (PST) MIME-Version: 1.0 References: <0980ce7c-047c-519f-e7d5-98d32b498482@pi.nu> <9419b7d7-87ef-151f-5ed8-b0f78c6e83af@gmail.com> <050301d4c590$445f5d50$cd1e17f0$@com> In-Reply-To: <050301d4c590$445f5d50$cd1e17f0$@com> From: Greg Mirsky Date: Sat, 16 Feb 2019 13:24:09 -0800 Message-ID: To: Weiqiang Cheng Cc: Alexander Vainshtein , spring , Stewart Bryant , draft-cheng-spring-mpls-path-segment@ietf.org, mpls@ietf.org, Loa Andersson Content-Type: multipart/alternative; boundary="000000000000b39f570582098306" Archived-At: Subject: Re: [mpls] [spring] to progress draft-cheng-spring-mpls-path-segment X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 16 Feb 2019 21:24:24 -0000 --000000000000b39f570582098306 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Weiqiang Cheng, thank you for your expedient response to my questions. The document states that one of the use cases for the Path segment is to be used as a performance, packet loss and/or delay, measurement session identifier. I think that RFC 6374 is the most suitable for PM OAM in SR-MPLS environment. Of course, the type of the encapsulated message can be identified using the destination UDP port number with IP/UDP encapsulation. But another option is to use G-ACh encapsulation. That would require the use of GAL. And that is how I've arrived at my original question (I should have explained it better, my apologies): How the Path segment and GAL are placed relative to each other in the SR-MPLS label stack? Regards, Greg On Fri, Feb 15, 2019 at 4:40 PM Weiqiang Cheng < chengweiqiang@chinamobile.com> wrote: > Hi Greg, > > Thanks a lot for your comments. > > My comments are in-line. > > > > B.R. > > Weiqiang Cheng > > > > *=E5=8F=91=E4=BB=B6=E4=BA=BA:* Greg Mirsky [mailto:gregimirsky@gmail.com] > *=E5=8F=91=E9=80=81=E6=97=B6=E9=97=B4:* 2019=E5=B9=B42=E6=9C=8815=E6=97= =A5 3:37 > *=E6=94=B6=E4=BB=B6=E4=BA=BA:* Alexander Vainshtein > *=E6=8A=84=E9=80=81:* spring@ietf.org; Stewart Bryant; > draft-cheng-spring-mpls-path-segment@ietf.org; mpls@ietf.org; Loa > Andersson > *=E4=B8=BB=E9=A2=98:* Re: [spring] to progress draft-cheng-spring-mpls-pa= th-segment > > > > Dear All, > > I concur with all what has been said in support of the adoption of this > draft by SPRING WG. The document is well-written, addresses the real > problem in SR-MPLS, and the proposed solution is technically viable. > > My comments and questions are entirely for further discussion: > > - would the draft be expanded to demonstrate how "the Path Segment may > be used to identify an SR-MPLS Policy, its Candidate-Path (CP) or a SI= D > List (SL)"? > > [Weiqiang] Yes, It is necessary and we will add some text to demonstrate > this in the future version. > > - as many use cases for the Path Segment are related to OAM > operations, it would be helpful to expand on the use of GAL and the Pa= th > Segment. > > [Weiqiang] It is always helpful to have more use cases. However, > The GAL is used today in MPLS-TP LSPs to flag the G-Ach and is used for O= AM > packets only while the Path segment is used for data packets for the each > traffic flow. It is a little bit different. > > Regards, > > Greg > > > > On Thu, Feb 14, 2019 at 1:12 AM Alexander Vainshtein < > Alexander.Vainshtein@ecitele.com> wrote: > > +1. > > > > I have been following this draft from its -00 revision. The current > revision has resolved most of the issues I (and others) have been raised > (e.g., elimination of excessive options). > > > > From my POV, in its current state the draft meets two basic requirements > for the WG adoption: > > 1. It addresses a real and relevant problem, namely the MPLS Flow > Identification problem discussed in general in RFC 8372 > and scoped to SR-MPLS LSPs in this > draft. Specifics of SR-MPLS include the need to provide end-to-end livene= ss > check that is one of the requirements explicitly specified in Section 2 o= f RFC > 8355 . > > 2. It provides a reasonable (from my POV) approach to solution of > this problem. > > > > I also concur with Stewart=E2=80=99s comment about strong similarity betw= een the > approach taken in this draft for SR-MPLS and generic work in progress on > synonymous flow labels > that has > been already adopted as a MPLS WG item. To me this is yet another > indication that the draft should be adopted. > > > > My 2c, > > Sasha > > > > Office: +972-39266302 > > Cell: +972-549266302 > > Email: Alexander.Vainshtein@ecitele.com > > > > -----Original Message----- > From: spring On Behalf Of Stewart Bryant > Sent: Wednesday, February 13, 2019 12:48 PM > To: Loa Andersson >; spring@ietf.org; > draft-cheng-spring-mpls-path-segment@ietf.org > Subject: Re: [spring] to progress draft-cheng-spring-mpls-path-segment > > > > I have just read the draft and agree that it should be adopted by the WG. > It solves an important problem in instrumenting and protecting an SR path= . > > > > It should be noted that we needed to do something very similar in > mainstream MPLS via the synonymous label work which is already adopted. > > However SL did not address the SR case. We therefore need this path label > work to be progressed. > > > > - Stewart > > > > On 10/02/2019 08:11, Loa Andersson wrote: > > > Working Group, > > > > > > I have reviewed draft-cheng-spring-mpls-path-segment and as far as I > > > can see, it is ready for wg adoption. > > > > > > There were some comments in Bangkok, but due to the many collisions > > > between working groups at that meeting I couldn't attend the SPRING > > > f2f. > > > > > > The minutes are not clear, but as far as I understand, there is > > > nothing that can't be resolved in the wg process. > > > > > > /Loa > > > > _______________________________________________ > > spring mailing list > > spring@ietf.org > > https://www..ietf.org/mailman/listinfo/spring > > > _________________________________________________________________________= __ > > This e-mail message is intended for the recipient only and contains > information which is > CONFIDENTIAL and which may be proprietary to ECI Telecom. If you have > received this > transmission in error, please inform us by e-mail, phone or fax, and then > delete the original > and all copies thereof. > _________________________________________________________________________= __ > > _______________________________________________ > spring mailing list > spring@ietf.org > https://www.ietf.org/mailman/listinfo/spring > > --000000000000b39f570582098306 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi=C2=A0Weiqiang Cheng,
thank you for your expedient r= esponse to my questions. The document states that one of the use cases for = the Path segment is to be used as a performance, packet loss and/or delay, = measurement session identifier. I think that RFC 6374 is the most suitable = for PM OAM in SR-MPLS environment. Of course, the type of the encapsulated= =C2=A0message can be identified using the destination UDP port number with = IP/UDP encapsulation. But another option is to use G-ACh encapsulation. Tha= t would require the use of GAL. And that is how I've arrived at my orig= inal question (I should have explained it better, my apologies):
=
How th= e Path segment and GAL are placed relative to each other in the SR-MPLS lab= el stack?

Regards,
Greg

On = Fri, Feb 15, 2019 at 4:40 PM Weiqiang Cheng <chengweiqiang@chinamobile.com> wrote:

<= span lang=3D"EN-US" style=3D"font-size:10.5pt;font-family:Calibri,sans-seri= f;color:rgb(31,73,125)">Hi Greg,

Thanks a lot for your comments.=

My comments are = in-line.

=C2=A0

B.R.

Weiqiang Cheng

<= span lang=3D"EN-US" style=3D"font-size:10.5pt;font-family:Calibri,sans-seri= f;color:rgb(31,73,125)">=C2=A0

=E5=8F=91=E4=BB=B6=E4=BA=BA: Greg Mirsky [mailto:gregimirsky@gmail.= com]
=E5=8F=91=E9=80=81=E6= =97=B6=E9=97=B4: 2019=E5=B9= =B42=E6=9C=8815=E6= =97=A5 3:37
=E6=94=B6=E4=BB=B6=E4=BA=BA:
Alexander Vainshtein=E6=8A=84=E9=80=81: spring@iet= f.org; Stewart Bryant; draft-cheng-spring-mpls-path-segment@iet= f.org; mpls@ietf.org= ; Loa Andersson
=E4=B8=BB=E9=A2=98: Re: [spring] to progress draft-cheng-spring-= mpls-path-segment

=C2=A0

=

Dear All,<= /p>

I concur with all what = has been said in support of the adoption of this draft by SPRING WG. The do= cument is well-written, addresses the real problem in SR-MPLS, and the prop= osed solution is technically viable.

My comments and questions are enti= rely for further discussion:

  • would the=C2=A0draft be= expanded to demonstrate how "the Path Segment may be used to identify= an SR-MPLS Policy, its Candidate-Path (CP) or a SID List (SL)"?

[W= eiqiang] Yes, It is necessary and=C2=A0we will add some text to demonstrate= this in the future version.

    as many use cases for the Path Se= gment are related to OAM operations, it would be helpful to expand on the u= se of GAL and the Path Segment.

=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0 =C2=A0[Weiqiang] It is alw= ays helpful to have more use cases. However, The GAL is used today in MPLS-= TP LSPs to flag the G-Ach and is used for OAM packets only while the Path s= egment is used for data packets for the each traffic flow. It is a little b= it different.

Regards,

Greg

=C2=A0

On Th= u, Feb 14, 2019 at 1:12 AM Alexander Vainshtein <Alexander.Vainshtein@ecitele= .com> wrote:

+1.

=C2=A0

I have b= een following this draft from its -00 revision. The current revision has re= solved most of the issues I (and others) have been raised (e.g., eliminatio= n of excessive options).

= =C2=A0

From my POV, in its= current state the draft meets two basic requirements for the WG adoption:<= u>

1.=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 It addresses a real and relevant problem, namely the MPLS F= low Identification problem discussed in general in RFC 8372 and scoped to SR-MPL= S LSPs in this draft. Specifics of SR-MPLS include the need to provide end-= to-end liveness check that is one of the requirements explicitly specified = in Section 2 of RFC 8355.

2.=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0 It provides a reasonable (from my POV= ) approach to =C2=A0solution of this problem.

<= span lang=3D"EN-US">=C2=A0

I also concur with Stewart=E2=80=99s comment about strong similarity betwe= en the approach taken in this draft for SR-MPLS and generic work in progress on synonymous flow labels that has been already adopt= ed as a MPLS WG item.=C2=A0 To me this is yet another indication that the d= raft should be adopted.

= =C2=A0

My 2c,

Sasha

=C2=A0

Of= fice: +972-39266302

Cell:= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 +972-549266302

<= span lang=3D"EN-US">Email:=C2=A0=C2=A0 Alexander.Vainshtein@ecitele.com

=C2=A0

-----Original Message-----
From: spring <spring-bounces@i= etf.org> On Behalf Of Stewart Bryant
Sent: Wednesday, February 13= , 2019 12:48 PM
To: Loa Andersson <loa@pi..nu>; spring@ietf.org; draft-cheng-spring-mpls-path-segme= nt@ietf.org
Subject: Re: [spring] to progress draft-cheng-spring-mpl= s-path-segment

=C2=A0

I have just read the draft and= agree that it should be adopted by the WG. It solves an important problem = in instrumenting and protecting an SR path.

=C2=A0

I= t should be noted that we needed to do something very similar in mainstream= MPLS via the synonymous label work which is already adopted.

However SL did not address the SR case= . We therefore need this path label work to be progressed.

=C2=A0

- Stewart

= =C2=A0

On 10/02/2019 08:11= , Loa Andersson wrote:

>= ; Working Group,

>=C2= =A0

> I have reviewed d= raft-cheng-spring-mpls-path-segment and as far as I

> can see, it is ready for wg adoption.

>=C2=A0=

> There were some comments in Bangkok, but = due to the many collisions

> between working groups at that meeting I couldn't attend the SPR= ING

> f2f.

>=C2=A0

> The minutes are not clear, but as far as I unde= rstand, there is

> not= hing that can't be resolved in the wg process.

=

>=C2=A0

> /Loa

=C2= =A0

______________________= _________________________

= spring mailing list

spring@ietf.org

https://www..ietf.org/mailman/listinfo/spring


________= ___________________________________________________________________

= This e-mail message is intended for the recipient only and contains informa= tion which is
CONFIDENTIAL and which may be proprietary to ECI Telecom.= If you have received this
transmission in error, please inform us by e= -mail, phone or fax, and then delete the original
and all copies thereo= f.
_____________________________________________________________________= ______

_______________________________________________
spring mailing lis= t
spring@ietf.org
https://www.ietf.org/mailman/listinfo/spring
=

--000000000000b39f570582098306-- From nobody Sun Feb 17 03:19:41 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id C92AA127AC2; Sun, 17 Feb 2019 03:19:19 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.601 X-Spam-Level: X-Spam-Status: No, score=-2.601 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id JMQeJbzdsQe0; Sun, 17 Feb 2019 03:19:17 -0800 (PST) Received: from mta5.iomartmail.com (mta5.iomartmail.com [62.128.193.155]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id F19CE128B01; Sun, 17 Feb 2019 03:19:13 -0800 (PST) Received: from vs1.iomartmail.com (vs1.iomartmail.com [10.12.10.121]) by mta5.iomartmail.com (8.14.4/8.14.4) with ESMTP id x1HBJ7uP021004; Sun, 17 Feb 2019 11:19:07 GMT Received: from vs1.iomartmail.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 5D4882203B; Sun, 17 Feb 2019 11:19:07 +0000 (GMT) Received: from asmtp2.iomartmail.com (unknown [10.12.10.249]) by vs1.iomartmail.com (Postfix) with ESMTPS id 46B822203A; Sun, 17 Feb 2019 11:19:07 +0000 (GMT) Received: from LAPTOPK7AS653V ([59.37.21.226]) (authenticated bits=0) by asmtp2.iomartmail.com (8.14.4/8.14.4) with ESMTP id x1HBJ1Pd025578 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Sun, 17 Feb 2019 11:19:05 GMT Reply-To: From: "Adrian Farrel" To: "'Al Morton'" , Cc: , , References: <155035125470.28448.13188042604940095760@ietfa.amsl.com> In-Reply-To: <155035125470.28448.13188042604940095760@ietfa.amsl.com> Date: Sun, 17 Feb 2019 11:18:59 -0000 Organization: Old Dog Consulting Message-ID: <00ef01d4c6b2$98102420$c8306c60$@olddog.co.uk> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Mailer: Microsoft Outlook 16.0 Thread-Index: AQGBGQl8mGC2K5R3NLNQWApPimb6ZKaLMFcA Content-Language: en-gb X-Originating-IP: 59.37.21.226 X-Thinkmail-Auth: adrian@olddog.co.uk X-TM-AS-GCONF: 00 X-TM-AS-Product-Ver: IMSVA-9.0.0.1623-8.2.0.1013-24434.007 X-TM-AS-Result: No--11.092-10.0-31-10 X-imss-scan-details: No--11.092-10.0-31-10 X-TMASE-Version: IMSVA-9.0.0.1623-8.2.1013-24434.007 X-TMASE-Result: 10--11.092100-10.000000 X-TMASE-MatchedRID: fE0JoqABJp3xIbpQ8BhdbOYAh37ZsBDCC/ExpXrHizzlJZht6cF9xFM1 EzrOOwvWQkIpLU6y2ndal/o0mVdrU054kNlzd6J3cFEiuPxHjsUICu6i14k6HPgnJH5vm2+gFhM gncTYqyS0JGeVHQ04WopMlj66NgD77Hz728uiamCcnm0v4tsY4ziAbW+oEE345VavBrAV4wUNqg 8odlnkKKaBafyu8kavPvqiJzbDmiyrSqv5DWrMSh47EGkpGeA9OkDbNlgmO/UN+H+9vY7EAGVYY C40jpLGTupBKcY88KK4VxGFQBNJeNUMAwTDOBnsbuFuYBIpyuk38FNTll9lEuedK36PXYKWmi3F G4ndT6WEjbv1/pAnVVb+d1W2AA/qhPc4FTJN6V5I9rD1ir7Z9L8+q17GFLKRmyiLZetSf8my5/t FZu9S3AV1uwb6J5fHC24oEZ6SpSkj80Za3RRg8B5g4ELUg4CGm+Yg55upS4XCkIkNXnqRGLbSWE lXgokXEze1V/T0TyU= X-TMASE-SNAP-Result: 1.821001.0001-0-1-12:0,22:0,33:0,34:0-0 Archived-At: Subject: Re: [mpls] Opsdir last call review of draft-ietf-mpls-sr-over-ip-02 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 17 Feb 2019 11:19:20 -0000 Hi Al, Thanks very much for reviewing. Responses in line. > Thanks for preparing this draft. > Providing transition methods is very welcome to > Operations. We aim to please =F0=9F=98=8A > There seem to be a few more opportunities to employ > Requirements Language in this draft (currently only > 3 MUSTs and 2 MAYs), to improve the consistency of=20 > implementations and subsequent adoption in operations. You are right. The original vision for this document was Informational (telling you how = to use existing tools), so the Requirements language only crept in as we = moved to Standards Track, and we should probably have more of it. > For example: > Section 2: > o Incremental deployment of the SR-MPLS technology may be > facilitated by tunneling SR-MPLS packets across parts of a = network > that are not SR-MPLS enabled using an IP tunneling mechanism such > as MPLS-in-UDP [RFC7510]. The tunnel destination address is the > ^^^^ > address of the next SR-MPLS capable node along the path (i.e., = the > egress of the active node segment). This is shown in Figure 1. > > Setting the Dst address correctly seems to be a requirement, > because this material in Section 2 is referenced later, in 3.2.3. > This seems a reasonable spot for s/is/SHOULD be/ at least. Well, in this specific case I'm going to agree with you, but for a = different reason. You don't set a destination address, you pick a tunnel = that has an end point. So we should probably write... OLD The tunnel destination address is the address of the next SR-MPLS capable node along the path (i.e., the egress of the active node segment). NEW The tunnel selected MUST have its remote end point (destination) Address equal to the address of the next SR-MPLS capable node=20 along the path (i.e., the egress of the active node segment). END > Section 3.1 FIB construction relies on about 5 drafts:=20 > much work in progress, just noting dependencies (no action) Yes, it is sad for me that the SR work still lingers in the pipe. > SRGB - ?? spell-out at first use Good catch. Segment Routing Global Block > Section 3.2.3. Additional Forwarding Procedures >....=20 > IP Header Fields: When encapsulating an MPLS packet in UDP, the > resulting packet is further encapsulated in IP for transmission. > IPv4 or IPv6 may be used according to the capabilities of the > network. The address fields are set as described in Section 2. > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ > The other IP header fields (such as DSCP code point, or IPv6 Flow > Label) on each UDP-encapsulated segment can be set according to > ^^^^^^^^^^ > the operator's policy: >Suggest: > s/can be set/SHOULD be configurable/ Yes From nobody Sun Feb 17 05:47:01 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id CDA311295EC; Sun, 17 Feb 2019 05:46:59 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.601 X-Spam-Level: X-Spam-Status: No, score=-2.601 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_LOW=-0.7, SPF_PASS=-0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id sVOSS88VZ11j; Sun, 17 Feb 2019 05:46:57 -0800 (PST) Received: from mx0a-00191d01.pphosted.com (mx0a-00191d01.pphosted.com [67.231.149.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id AB1ED1293B1; Sun, 17 Feb 2019 05:46:57 -0800 (PST) Received: from pps.filterd (m0048589.ppops.net [127.0.0.1]) by m0048589.ppops.net-00191d01. 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(GMT) Received: from sldc.sbc.com (localhost [127.0.0.1]) by clpi183.sldc.sbc.com (8.14.5/8.14.5) with ESMTP id x1HDkpeH010472; Sun, 17 Feb 2019 07:46:51 -0600 Received: from mail-green.research.att.com (mail-green.research.att.com [135.207.255.15]) by clpi183.sldc.sbc.com (8.14.5/8.14.5) with ESMTP id x1HDkhnD010020; Sun, 17 Feb 2019 07:46:43 -0600 Received: from exchange.research.att.com (njbdcas1.research.att.com [135.197.255.61]) by mail-green.research.att.com (Postfix) with ESMTP id D53FFE40DB; Sun, 17 Feb 2019 08:46:10 -0500 (EST) Received: from njmtexg5.research.att.com ([fe80::b09c:ff13:4487:78b6]) by njbdcas1.research.att.com ([fe80::8c6b:4b77:618f:9a01%11]) with mapi id 14.03.0439.000; Sun, 17 Feb 2019 08:46:42 -0500 From: "MORTON, ALFRED C (AL)" To: "adrian@olddog.co.uk" , "ops-dir@ietf.org" CC: "mpls@ietf.org" , "ietf@ietf.org" , "draft-ietf-mpls-sr-over-ip.all@ietf.org" Thread-Topic: Opsdir last call review of draft-ietf-mpls-sr-over-ip-02 Thread-Index: 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definitions=main-1902170108 Archived-At: Subject: Re: [mpls] Opsdir last call review of draft-ietf-mpls-sr-over-ip-02 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 17 Feb 2019 13:47:00 -0000 VGhhbmtzIEFkcmlhbi4NCg0KQE9QUy1ESVIgLSBjb25zaWRlciB0aGVzZSBjb21tZW50cyByZXNv bHZlZC4NCg0KQWwNCg0KPiAtLS0tLU9yaWdpbmFsIE1lc3NhZ2UtLS0tLQ0KPiBGcm9tOiBBZHJp YW4gRmFycmVsIFttYWlsdG86YWRyaWFuQG9sZGRvZy5jby51a10NCj4gU2VudDogU3VuZGF5LCBG ZWJydWFyeSAxNywgMjAxOSA2OjE5IEFNDQo+IFRvOiBNT1JUT04sIEFMRlJFRCBDIChBTCkgPGFj bUByZXNlYXJjaC5hdHQuY29tPjsgb3BzLWRpckBpZXRmLm9yZw0KPiBDYzogbXBsc0BpZXRmLm9y ZzsgaWV0ZkBpZXRmLm9yZzsgZHJhZnQtaWV0Zi1tcGxzLXNyLW92ZXItaXAuYWxsQGlldGYub3Jn DQo+IFN1YmplY3Q6IFJFOiBPcHNkaXIgbGFzdCBjYWxsIHJldmlldyBvZiBkcmFmdC1pZXRmLW1w bHMtc3Itb3Zlci1pcC0wMg0KPiANCj4gSGkgQWwsDQo+IA0KPiBUaGFua3MgdmVyeSBtdWNoIGZv 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Xl5eXl4NCj4gPiAgICAgIHRoZSBvcGVyYXRvcidzIHBvbGljeToNCj4gPlN1Z2dlc3Q6DQo+ID4g cy9jYW4gYmUgc2V0L1NIT1VMRCBiZSBjb25maWd1cmFibGUvDQo+IA0KPiBZZXMNCg0K From nobody Sun Feb 17 15:58:03 2019 Return-Path: X-Original-To: mpls@ietf.org Delivered-To: mpls@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id B01F2128D52; Sun, 17 Feb 2019 15:57:46 -0800 (PST) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: Paul Wouters To: Cc: mpls@ietf.org, draft-ietf-mpls-sfc-encapsulation.all@ietf.org, ietf@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 6.91.0 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <155044786665.4047.16182077722084116649@ietfa.amsl.com> Date: Sun, 17 Feb 2019 15:57:46 -0800 Archived-At: Subject: [mpls] Secdir last call review of draft-ietf-mpls-sfc-encapsulation-02 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 17 Feb 2019 23:57:47 -0000 Reviewer: Paul Wouters Review result: Ready I have reviewed this document as part of the security directorate's ongoing effort to review all IETF documents being processed by the IESG. These comments were written primarily for the benefit of the security area directors. Document editors and WG chairs should treat these comments just like any other last call comments. The summary of the review is Ready While I'm not familiar with the Service Function Chaining (SFC) architecture and the Network Service Header (NSH), the Security Considerations in this document seem to be correct in pointing out that: This document simply defines one additional transport encapsulation. The NSH was specially constructed to be agnostic to its transport encapsulation. As as result, in general this additional encapsulation is no more or less secure than carrying the NSH in any other encapsulation. From nobody Sun Feb 17 16:08:52 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 69996124D68; Sun, 17 Feb 2019 16:08:44 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.601 X-Spam-Level: X-Spam-Status: No, score=-2.601 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id prBpk-qasiFN; Sun, 17 Feb 2019 16:08:42 -0800 (PST) Received: from mta5.iomartmail.com (mta5.iomartmail.com [62.128.193.155]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id F1BFA1286D8; Sun, 17 Feb 2019 16:08:38 -0800 (PST) Received: from vs3.iomartmail.com (vs3.iomartmail.com [10.12.10.124]) by mta5.iomartmail.com (8.14.4/8.14.4) with ESMTP id x1I08a48022598; Mon, 18 Feb 2019 00:08:36 GMT Received: from vs3.iomartmail.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 93E9B2203D; Mon, 18 Feb 2019 00:08:36 +0000 (GMT) Received: from asmtp3.iomartmail.com (unknown [10.12.10.224]) by vs3.iomartmail.com (Postfix) with ESMTPS id 7D38C2203C; Mon, 18 Feb 2019 00:08:36 +0000 (GMT) Received: from LAPTOPK7AS653V ([59.37.21.226]) (authenticated bits=0) by asmtp3.iomartmail.com (8.14.4/8.14.4) with ESMTP id x1I08WRo007527 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Mon, 18 Feb 2019 00:08:34 GMT Reply-To: From: "Adrian Farrel" To: "'Paul Wouters'" , Cc: , , References: <155044786665.4047.16182077722084116649@ietfa.amsl.com> In-Reply-To: <155044786665.4047.16182077722084116649@ietfa.amsl.com> Date: Mon, 18 Feb 2019 00:08:30 -0000 Organization: Old Dog Consulting Message-ID: <011a01d4c71e$16d9dd30$448d9790$@olddog.co.uk> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Mailer: Microsoft Outlook 16.0 Thread-Index: AQF5B8APV/6zAJCJLq3MOjIgukEp0qacKyZg Content-Language: en-gb X-Originating-IP: 59.37.21.226 X-Thinkmail-Auth: adrian@olddog.co.uk X-TM-AS-GCONF: 00 X-TM-AS-Product-Ver: IMSVA-9.0.0.1623-8.2.0.1013-24434.007 X-TM-AS-Result: No--8.253-10.0-31-10 X-imss-scan-details: No--8.253-10.0-31-10 X-TMASE-Version: IMSVA-9.0.0.1623-8.2.1013-24434.007 X-TMASE-Result: 10--8.252600-10.000000 X-TMASE-MatchedRID: oTBA/+sdKabxIbpQ8BhdbKlXXrpOy3q0JPNIV6GF8mvOxDyJFXIPjuV0 5r5vXH4sv8qe8eDZGElC65348+oZgVdI3z1FMme36Zzj+kMRBrZR3sGN+j7mNMz1fqX318VP0u5 faGP8ztRV/mZWautsNz95I71UPSkOzsxad8fKloYF8rFt9xmDKTIaJpKzSfrsUCgEErrUGFwHn+ RaCrVBs4SaYXP5EhtmCOtlGomeL41qxgfCZhqtfAI0yP/uoH+DfS0Ip2eEHnwa2S8rkvtFcbDsz p3K5gqDjoczmuoPCq22oIhiAsKJgJS5x7cNmK0Fjy77szn26nqiQGmmwblmDsUufy2PLnHz X-TMASE-SNAP-Result: 1.821001.0001-0-1-12:0,22:0,33:0,34:0-0 Archived-At: Subject: Re: [mpls] Secdir last call review of draft-ietf-mpls-sfc-encapsulation-02 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 18 Feb 2019 00:08:44 -0000 Hi Paul, Should we make the observation that, since the MPLS forwarding plane = does not offer any security features, if security is required it must be = provided by the SFC layer using some mechanisms inherent in the NSH. We = could/should probably also observe that, as yet, no NSH security = mechanisms have been defined. Cheers, Adrian -----Original Message----- From: ietf On Behalf Of Paul Wouters Sent: 17 February 2019 23:58 To: secdir@ietf.org Cc: mpls@ietf.org; draft-ietf-mpls-sfc-encapsulation.all@ietf.org; = ietf@ietf.org Subject: Secdir last call review of draft-ietf-mpls-sfc-encapsulation-02 Reviewer: Paul Wouters Review result: Ready I have reviewed this document as part of the security directorate's ongoing effort to review all IETF documents being processed by the IESG. These comments were written primarily for the benefit of the security area directors. Document editors and WG chairs should treat these comments just like any other last call comments. The summary of the review is Ready While I'm not familiar with the Service Function Chaining (SFC) = architecture and the Network Service Header (NSH), the Security Considerations in = this document seem to be correct in pointing out that: This document simply defines one additional transport encapsulation. The NSH was specially constructed to be agnostic to its transport encapsulation. As as result, in general this additional encapsulation is no more or less secure than carrying the NSH in any other encapsulation. From nobody Sun Feb 17 16:59:26 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 42B5712E04D; Sun, 17 Feb 2019 16:59:25 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.899 X-Spam-Level: X-Spam-Status: No, score=-1.899 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id YMBS5eosftrW; Sun, 17 Feb 2019 16:59:22 -0800 (PST) Received: from pipi.pi.nu (pipi.pi.nu [83.168.239.141]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 6A35C130DE5; Sun, 17 Feb 2019 16:59:22 -0800 (PST) Received: from [10.255.254.3] (unknown [31.220.15.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: loa@pi.nu) by pipi.pi.nu (Postfix) with ESMTPSA id 9A28518015A3; Mon, 18 Feb 2019 01:59:18 +0100 (CET) From: Loa Andersson To: "mpls@ietf.org" , "mpls-chairs@ietf.org" , "draft-ietf-mpls-rmr@ietf.org" , Deborah A Brungard References: <1bf361f0-1987-ce4e-0671-d46886898e44@pi.nu> Message-ID: <4a5eb0ec-38d5-a74b-56d4-1d2779f52b73@pi.nu> Date: Mon, 18 Feb 2019 08:59:13 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.5.0 MIME-Version: 1.0 In-Reply-To: <1bf361f0-1987-ce4e-0671-d46886898e44@pi.nu> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Archived-At: Subject: [mpls] Closed -- : working group last call on draft-ietf-mpls-rmr X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 18 Feb 2019 00:59:25 -0000 Working Group, This working group last call is closed. There has been some comments (Pavan and Sue), could the author please decide how they want to respond to the comments and update the draft as necessary. /Loa mpls wg co-chair On 2019-01-15 16:10, Loa Andersson wrote: > Working Group, > > This is to initiate a two week working group last call on > draft-ietf-mpls-rmr. > > Please send your comments to the mpls wg mailing list (mpls@ietf.org). > > There are no IPR disclosures directly against draft-ietf-mpls-rmr, but > an IPR (#2661) were disclosed against the individual document that we > adopted as a working group document. > > Both authors have stated on the working group mailing list that they > are unaware of any non-disclosed IPRs that relates to this document. > > This working group last call ends Wednesday January 30, 2019. > > /Loa > mpls wg co-chair -- Loa Andersson email: loa@pi.nu Senior MPLS Expert Bronze Dragon Consulting phone: +46 739 81 21 64 From nobody Mon Feb 18 02:11:48 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id A8B23130EEF; Mon, 18 Feb 2019 02:11:40 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.2 X-Spam-Level: X-Spam-Status: No, score=-4.2 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Wrqx0-ZKzI1m; Mon, 18 Feb 2019 02:11:38 -0800 (PST) Received: from huawei.com (lhrrgout.huawei.com [185.176.76.210]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 2734A130EEC; Mon, 18 Feb 2019 02:11:38 -0800 (PST) Received: from lhreml703-cah.china.huawei.com (unknown [172.18.7.108]) by Forcepoint Email with ESMTP id 5B44719CC5C6C19F10FE; Mon, 18 Feb 2019 10:11:36 +0000 (GMT) Received: from DGGEML423-HUB.china.huawei.com (10.1.199.40) by lhreml703-cah.china.huawei.com (10.201.108.44) with Microsoft SMTP Server (TLS) id 14.3.408.0; Mon, 18 Feb 2019 10:11:35 +0000 Received: from DGGEML510-MBX.china.huawei.com ([169.254.2.6]) by dggeml423-hub.china.huawei.com ([10.1.199.40]) with mapi id 14.03.0415.000; Mon, 18 Feb 2019 18:11:24 +0800 From: Mach Chen To: Benjamin Kaduk CC: Linda Dunbar , "secdir@ietf.org" , "mpls@ietf.org" , "draft-ietf-mpls-lsp-ping-lag-multipath.all@ietf.org" , "ietf@ietf.org" Thread-Topic: [secdir] Secdir last call review of draft-ietf-mpls-lsp-ping-lag-multipath-05 Thread-Index: AQHUkY+Xr7eIQ7lWe0az4uRG6fBCdqV9d+SwgERX9oCAHShNQIADyugAgALw4PA= Date: Mon, 18 Feb 2019 10:11:24 +0000 Message-ID: References: <154455986336.13151.8483284555885294015@ietfa.amsl.com> <20190126211729.GJ49072@kduck.mit.edu> <20190216202815.GD82217@kduck.mit.edu> In-Reply-To: <20190216202815.GD82217@kduck.mit.edu> Accept-Language: en-US, zh-CN Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.111.194.201] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: Subject: Re: [mpls] [secdir] Secdir last call review of draft-ietf-mpls-lsp-ping-lag-multipath-05 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 18 Feb 2019 10:11:41 -0000 Hi Benjamin, > -----Original Message----- > From: Benjamin Kaduk [mailto:kaduk@mit.edu] > Sent: Sunday, February 17, 2019 4:28 AM > To: Mach Chen > Cc: Linda Dunbar ; secdir@ietf.org; > mpls@ietf.org; draft-ietf-mpls-lsp-ping-lag-multipath.all@ietf.org; > ietf@ietf.org > Subject: Re: [secdir] Secdir last call review of draft-ietf-mpls-lsp-ping= -lag- > multipath-05 >=20 > Hi Mach, >=20 > My apologies as well for the delay. >=20 > On Thu, Feb 14, 2019 at 03:02:07AM +0000, Mach Chen wrote: > > Hi Benjamin, > > > > Sorry for the delayed response! > > > > Please see my response inline... > > > > > -----Original Message----- > > > From: Benjamin Kaduk [mailto:kaduk@mit.edu] > > > Sent: Sunday, January 27, 2019 5:17 AM > > > To: Mach Chen > > > Cc: Linda Dunbar ; secdir@ietf.org; > > > mpls@ietf.org; draft-ietf-mpls-lsp-ping-lag-multipath.all@ietf.org; > > > ietf@ietf.org > > > Subject: Re: [secdir] Secdir last call review of > > > draft-ietf-mpls-lsp-ping-lag- > > > multipath-05 > > > > > > On Fri, Dec 14, 2018 at 02:11:21AM +0000, Mach Chen wrote: > > > > Hi Linda, > > > > > > > > Thanks for the review! > > > > > > > > Some responses inline... > > > > > > > > > -----Original Message----- > > > > > From: ietf [mailto:ietf-bounces@ietf.org] On Behalf Of Linda > > > > > Dunbar > > > > > Sent: Wednesday, December 12, 2018 4:24 AM > > > > > To: secdir@ietf.org > > > > > Cc: mpls@ietf.org; > > > > > draft-ietf-mpls-lsp-ping-lag-multipath.all@ietf.org; > > > > > ietf@ietf.org > > > > > Subject: Secdir last call review of > > > > > draft-ietf-mpls-lsp-ping-lag-multipath-05 > > > > > > > > > > Reviewer: Linda Dunbar > > > > > Review result: Ready > > > > > > > > > > I have reviewed this document as part of the security > > > > > directorate's ongoing effort to review all IETF documents being > > > > > processed by the IESG. These comments were written primarily > > > > > for the benefit of the security area directors. Document > > > > > editors and WG chairs should treat these comments just like any > other last call comments. > > > > > > > > > > The summary of the review is Ready with comment > > > > > > > > > > The described mechanism for LSP Multipath Ping is very clear. > > > > > The Security Consideration re-uses the description of RFC8029, > > > > > which is very comprehensive. > > > > > It would be better if the draft describes how to prevent > > > > > intermediate LSRs in between the Initiating LSR and Responding > > > > > LSR from mis-using the detailed link information (e.g. > > > > > forwarding to > > > somewhere else). > > > > > > > > The Echo Request and Reply messages are directly exchanged between > > > > the > > > Initiating LSR and the Responding LSR, those intermediate LSRs just > > > forward the messages as normal packets, they will not see the > > > detailed link information unless if they inspect and do DPI on every > > > packet forwarded by them. > > > > > > > > The detailed link information is supplied to the Initiating LSR > > > > for using, the > > > intermediate LSRs will not try to use it even if they received the > > > information, because there is no corresponding Echo Request to the > received Echo Reply. > > > > > > The intermediate LSRs still will have access to the plaintext > > > information, even if in normal operation they do not need to act upon > that information. > > > Generally in this sort of situation we will either explicitly state > > > that the intermediate nodes must be trusted to not abuse the > > > information in question, or provide some mechanism for end-to-end > > > confidentiality protection. > > > > "Intermediate nodes must be trusted to not abuse the information" is > normally assumed. For the intermediate nodes, there is no different > between the Echo Reply messages and any other data traffic, control > messages. They just forward the Echo Reply messages as normal packets. I > am not sure it needs to explicitly state this. Do you suggest to add suc= h a > statement in the security consideration section? >=20 > The concern is not about the normal operation, but rather about abnormal > operation, e.g., if an intermediate node gets compromised by an attacker. > We need to document the new abilities an attacker gets, when comparing > the original case of "an attacker compromises an intermediate node that i= s > using MPLS without this mechanism" to the new case of "an attacker > compromises an intermediate node that is using MPLS with this mechanism". > So, while I do suggest adding a statement to the security considerations > section, the statement I want does not relate to the normal operation cas= e > (when intermediate nodes ignore the contents of the message). OK, will add such a statement in the security considerations section.=20 >=20 > > > > > > Also (noting that I only skimmed the document so this may not make > > > sense), the security considerations seem to suggest using an IP ACL > > > for determining which messages are trusted; IP ACLs are generally > > > not recommended in favor of cryptographic mechanisms at this point. > > > > IP ACLs was introduced in RFC 8029 and is reused in this document, > > it's >=20 > I did not find a clear and explicit declaration in RFC 8029 of the concep= t of an > IP ACL; I assume you are referring to: >=20 > To protect against unauthorized sources using MPLS echo request > messages to obtain network information, it is RECOMMENDED that > implementations provide a means of checking the source addresses of > MPLS echo request messages against an access list before accepting > the message. Yes, this is that I am referring to. >=20 > I do not think anyone is going to say "do not filter based on IP source > address", but there would be general skepticism about relying upon it as = a > sole security mechanism. >=20 > > just one of the security mechanisms. This document is an extension to >=20 > (Could you remind me of the other mechanisms? I don't think I have a goo= d > handle on them.) You are right, for protecting against unauthorized sources, IP ACL is the o= nly way proposed in RFC 8029 and this document.=20 >=20 > > RFC 8029, as stated in this document, all security considerations > > defined in RFC 8029 apply to this document. Do you have any specific > > suggestion to the current security consideration? >=20 > I am mostly just lamenting the state of affairs; this is a sufficiently > incremental change that it is inappropriate to require dramatic changes i= n the > security mechanisms. I agree with you. Does it mean that you are OK with the current security co= nsiderations, given that a statement regarding the intermediate node's proc= ess will be added. Best regards, Mach >=20 > -Ben From nobody Mon Feb 18 06:52:02 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 2DD7C1293B1; Mon, 18 Feb 2019 06:51:54 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2 X-Spam-Level: X-Spam-Status: No, score=-2 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=mit.edu Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Cz5U-ZOLzokx; Mon, 18 Feb 2019 06:51:51 -0800 (PST) Received: from NAM05-CO1-obe.outbound.protection.outlook.com (mail-eopbgr720097.outbound.protection.outlook.com [40.107.72.97]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 7FA1A128B01; 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ietf.org; dkim=none (message not signed) header.d=none;ietf.org; dmarc=bestguesspass action=none header.from=mit.edu; Received-SPF: Pass (protection.outlook.com: domain of mit.edu designates 18.9.28.11 as permitted sender) receiver=protection.outlook.com; client-ip=18.9.28.11; helo=outgoing.mit.edu; Received: from outgoing.mit.edu (18.9.28.11) by CO1NAM03FT023.mail.protection.outlook.com (10.152.80.157) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1643.13 via Frontend Transport; Mon, 18 Feb 2019 14:51:48 +0000 Received: from kduck.mit.edu (24-107-191-124.dhcp.stls.mo.charter.com [24.107.191.124]) (authenticated bits=56) (User authenticated as kaduk@ATHENA.MIT.EDU) by outgoing.mit.edu (8.14.7/8.12.4) with ESMTP id x1IEpiIl031107 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 18 Feb 2019 09:51:46 -0500 Date: Mon, 18 Feb 2019 08:51:44 -0600 From: Benjamin Kaduk To: Mach Chen CC: Linda Dunbar , "secdir@ietf.org" , "mpls@ietf.org" , "draft-ietf-mpls-lsp-ping-lag-multipath.all@ietf.org" , "ietf@ietf.org" Message-ID: <20190218145144.GG24387@kduck.mit.edu> References: <154455986336.13151.8483284555885294015@ietfa.amsl.com> <20190126211729.GJ49072@kduck.mit.edu> <20190216202815.GD82217@kduck.mit.edu> MIME-Version: 1.0 Content-Type: text/plain; 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Ip=[18.9.28.11]; Helo=[outgoing.mit.edu] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN6PR01MB4863 Archived-At: Subject: Re: [mpls] [secdir] Secdir last call review of draft-ietf-mpls-lsp-ping-lag-multipath-05 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 18 Feb 2019 14:51:54 -0000 On Mon, Feb 18, 2019 at 10:11:24AM +0000, Mach Chen wrote: > Hi Benjamin, > > > -----Original Message----- > > From: Benjamin Kaduk [mailto:kaduk@mit.edu] > > Sent: Sunday, February 17, 2019 4:28 AM > > To: Mach Chen > > Cc: Linda Dunbar ; secdir@ietf.org; > > mpls@ietf.org; draft-ietf-mpls-lsp-ping-lag-multipath.all@ietf.org; > > ietf@ietf.org > > Subject: Re: [secdir] Secdir last call review of draft-ietf-mpls-lsp-ping-lag- > > multipath-05 > > > > Hi Mach, > > > > My apologies as well for the delay. > > > > On Thu, Feb 14, 2019 at 03:02:07AM +0000, Mach Chen wrote: > > > Hi Benjamin, > > > > > > Sorry for the delayed response! > > > > > > > > > "Intermediate nodes must be trusted to not abuse the information" is > > normally assumed. For the intermediate nodes, there is no different > > between the Echo Reply messages and any other data traffic, control > > messages. They just forward the Echo Reply messages as normal packets. I > > am not sure it needs to explicitly state this. Do you suggest to add such a > > statement in the security consideration section? > > > > The concern is not about the normal operation, but rather about abnormal > > operation, e.g., if an intermediate node gets compromised by an attacker. > > We need to document the new abilities an attacker gets, when comparing > > the original case of "an attacker compromises an intermediate node that is > > using MPLS without this mechanism" to the new case of "an attacker > > compromises an intermediate node that is using MPLS with this mechanism". > > So, while I do suggest adding a statement to the security considerations > > section, the statement I want does not relate to the normal operation case > > (when intermediate nodes ignore the contents of the message). > > OK, will add such a statement in the security considerations section. Thanks! > > > > > > > > > > Also (noting that I only skimmed the document so this may not make > > > > sense), the security considerations seem to suggest using an IP ACL > > > > for determining which messages are trusted; IP ACLs are generally > > > > not recommended in favor of cryptographic mechanisms at this point. > > > > > > IP ACLs was introduced in RFC 8029 and is reused in this document, > > > it's > > > > I did not find a clear and explicit declaration in RFC 8029 of the concept of an > > IP ACL; I assume you are referring to: > > > > To protect against unauthorized sources using MPLS echo request > > messages to obtain network information, it is RECOMMENDED that > > implementations provide a means of checking the source addresses of > > MPLS echo request messages against an access list before accepting > > the message. > > Yes, this is that I am referring to. > > > > > I do not think anyone is going to say "do not filter based on IP source > > address", but there would be general skepticism about relying upon it as a > > sole security mechanism. > > > > > just one of the security mechanisms. This document is an extension to > > > > (Could you remind me of the other mechanisms? I don't think I have a good > > handle on them.) > > You are right, for protecting against unauthorized sources, IP ACL is the only way proposed in RFC 8029 and this document. > > > > > > RFC 8029, as stated in this document, all security considerations > > > defined in RFC 8029 apply to this document. Do you have any specific > > > suggestion to the current security consideration? > > > > I am mostly just lamenting the state of affairs; this is a sufficiently > > incremental change that it is inappropriate to require dramatic changes in the > > security mechanisms. > > I agree with you. Does it mean that you are OK with the current security considerations, given that a statement regarding the intermediate node's process will be added. Given what I've seen so far, yes. (I only skimmed the document as part of this thread, and will do a full review as it comes up on an IESG telechat.) -Benjamin From nobody Tue Feb 19 21:35:52 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id D6CE0129619; Tue, 19 Feb 2019 21:35:50 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.9 X-Spam-Level: X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id DmsU2UHeVg6E; Tue, 19 Feb 2019 21:35:48 -0800 (PST) Received: from pipi.pi.nu (pipi.pi.nu [83.168.239.141]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 4EC59130DC9; Tue, 19 Feb 2019 21:35:46 -0800 (PST) Received: from [192.168.1.20] (unknown [119.94.174.90]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: loa@pi.nu) by pipi.pi.nu (Postfix) with ESMTPSA id 8DC8D180157E; Wed, 20 Feb 2019 06:35:43 +0100 (CET) From: Loa Andersson To: "mpls@ietf.org" Cc: "mpls-chairs@ietf.org" , "draft-zheng-mpls-lsp-ping-yang-cfg@ietf.org" Message-ID: <98db7e71-6152-1335-8ca0-b5ae67b8a4b6@pi.nu> Date: Wed, 20 Feb 2019 13:35:40 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.5.1 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Archived-At: Subject: [mpls] Working Group Adoption Poll on draft-zheng-mpls-lsp-ping-yang-cfg X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 20 Feb 2019 05:35:51 -0000 Working Group, This is to start a two week poll on adopting draft-zheng-mpls-lsp-ping-yang-cfg-10 as a MPLS working group document. Please send your comments (support/not support) to the mpls working group mailing list (mpls@ietf.org). Please give a technical motivation for your support/not support, especially if you think that the document should not be adopted as a working group document. We have done an IPR poll for this document. All the co-authors have responded to the IPR poll that they are unaware of any IPRs that relates to this draft. All, the contributors (with one exception) have responded to the IPR poll that they are unaware of any IPRs that relates to this draft. The contributor that has not responded has left his former employment and is no longer on the MPLS wg mailing list. The wg chairs has decided to go ahead with the wgap. If there is any concerns about this, please speak up in the mailing list. There are no IPR disclosures against this document. The working group adoption poll ends March 6, 2019. /Loa mpls wg co-chair -- Loa Andersson email: loa@pi.nu Senior MPLS Expert Bronze Dragon Consulting phone: +46 739 81 21 64 From nobody Wed Feb 20 03:30:40 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 8F0A812D826; Wed, 20 Feb 2019 03:30:38 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: 0.246 X-Spam-Level: X-Spam-Status: No, score=0.246 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RATWARE_MS_HASH=2.148, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001] autolearn=no autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=btconnect.onmicrosoft.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 8Y6KFZLfpcWH; 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charset="iso-8859-1" Content-ID: <619EC5B61417F54EB4AF8BE1BBA43B95@eurprd07.prod.outlook.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: btconnect.com X-MS-Exchange-CrossTenant-Network-Message-Id: 1d82f132-9203-4500-15bc-08d69726d45a X-MS-Exchange-CrossTenant-originalarrivaltime: 20 Feb 2019 11:30:34.2766 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-id: cf8853ed-96e5-465b-9185-806bfe185e30 X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR07MB6141 Archived-At: Subject: Re: [mpls] Working Group Adoption Poll on draft-zheng-mpls-lsp-ping-yang-cfg X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 20 Feb 2019 11:30:38 -0000 Not support The YANG module is very weak on references which makes it hard for me to be sure but there seems to be a mismatch between e.g. FEC classes in RFC8029 and the YANG module. Thus RFC809 has 1 5 LDP IPv4 prefix with a one byte prefix length and four byte prefix. The YANG module has enum ip-prefix { value "0"; description "IPv4/IPv6 prefix"; and choice target-fec { case ip-prefix { leaf ip-address { type inet:ip-address; description "IPv4/IPv6 Prefix"; where ip-address has no concept of prefix length how can that be configured?. There are many such instances IMHO; having references in the YANG module to sections of RFC8029 would make this more apparent. Tom Petch ----- Original Message ----- From: "Loa Andersson" To: Cc: ; Sent: Wednesday, February 20, 2019 5:35 AM > Working Group, > > This is to start a two week poll on adopting > draft-zheng-mpls-lsp-ping-yang-cfg-10 > as a MPLS working group document. > > Please send your comments (support/not support) to the mpls working > group mailing list (mpls@ietf.org). Please give a technical > motivation for your support/not support, especially if you think that > the document should not be adopted as a working group document. > > We have done an IPR poll for this document. All the co-authors have > responded to the IPR poll that they are unaware of any IPRs that relates > to this draft. > > All, the contributors (with one exception) have responded to the IPR > poll that they are unaware of any IPRs that relates to this draft. > > The contributor that has not responded has left his former employment > and is no longer on the MPLS wg mailing list. The wg chairs has decided > to go ahead with the wgap. If there is any concerns about this, please > speak up in the mailing list. > > There are no IPR disclosures against this document. > > The working group adoption poll ends March 6, 2019. > > /Loa > > mpls wg co-chair > -- > > > Loa Andersson email: loa@pi.nu > Senior MPLS Expert > Bronze Dragon Consulting phone: +46 739 81 21 64 > > _______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls From nobody Wed Feb 20 07:48:03 2019 Return-Path: X-Original-To: mpls@ietf.org Delivered-To: mpls@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id E817D130E5F; Wed, 20 Feb 2019 07:47:46 -0800 (PST) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: Robert Sparks To: Cc: mpls@ietf.org, ietf@ietf.org, draft-ietf-mpls-sr-over-ip.all@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 6.91.0 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <155067766687.31388.18349714938448955572@ietfa.amsl.com> Date: Wed, 20 Feb 2019 07:47:46 -0800 Archived-At: Subject: [mpls] Genart last call review of draft-ietf-mpls-sr-over-ip-02 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 20 Feb 2019 15:47:47 -0000 Reviewer: Robert Sparks Review result: Ready with Nits I am the assigned Gen-ART reviewer for this draft. The General Area Review Team (Gen-ART) reviews all IETF documents being processed by the IESG for the IETF Chair. Please treat these comments just like any other last call comments. For more information, please see the FAQ at . Document: draft-ietf-mpls-sr-over-ip-02 Reviewer: Robert Sparks Review Date: 2019-02-20 IETF LC End Date: 2019-02-26 IESG Telechat date: Not scheduled for a telechat Summary: Ready, but with nits that should be addressed before publication as a Standards Track RFC Nits The 2nd sentence of the introduction is complex. It should be easy to simplify. It would help to place the reference to draft-ietf-mpls-spring-entropy label at "If encoding of entropy is desired". (Or if some other reference is better, use that) In that same paragraph, something is wrong at "make use of entropy label mechanism." Should that be "the entropy label mechanism"? SRGB is used without expansion. Where is "the lower bound" of an SRGB defined? The string "lower bound" doesn't occur in either of the routing-extensions drafts referenced where SRGB is first used. Section 3.1 is about ostensibly about constructing a FIB entry, but its last step is sending a packet. The first sentence in section 3.2 is more complex than it needs to be. It should be easy to simplify. It would be nice if you could make the differences between the routers in figures 3 and 4 visually apparent rather than relying on text to explain the difference. Something like (view in a fixed width font): s-----s i-----i | A +------+ B +-- s-----s i--+--i | At the first paragraph on page 9: s/and then process/and then processes/ From nobody Wed Feb 20 08:22:51 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 8CD3C12F19D; Wed, 20 Feb 2019 08:22:44 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.6 X-Spam-Level: X-Spam-Status: No, score=-2.6 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_LOW=-0.7] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id kQUPWo4UI-lx; Wed, 20 Feb 2019 08:22:42 -0800 (PST) Received: from mta7.iomartmail.com (mta7.iomartmail.com [62.128.193.157]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 8A54C12870E; Wed, 20 Feb 2019 08:22:41 -0800 (PST) Received: from vs3.iomartmail.com (vs3.iomartmail.com [10.12.10.124]) by mta7.iomartmail.com (8.14.4/8.14.4) with ESMTP id x1KGMdwn006497; Wed, 20 Feb 2019 16:22:39 GMT Received: from vs3.iomartmail.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 924782203A; Wed, 20 Feb 2019 16:22:38 +0000 (GMT) Received: from asmtp3.iomartmail.com (unknown [10.12.10.224]) by vs3.iomartmail.com (Postfix) with ESMTPS id 869DF22044; Wed, 20 Feb 2019 16:22:38 +0000 (GMT) Received: from LAPTOPK7AS653V ([114.247.104.200]) (authenticated bits=0) by asmtp3.iomartmail.com (8.14.4/8.14.4) with ESMTP id x1KGMWYV019450 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Wed, 20 Feb 2019 16:22:35 GMT Reply-To: From: "Adrian Farrel" To: "'Robert Sparks'" , Cc: , , References: <155067766687.31388.18349714938448955572@ietfa.amsl.com> In-Reply-To: <155067766687.31388.18349714938448955572@ietfa.amsl.com> Date: Wed, 20 Feb 2019 16:22:31 -0000 Organization: Old Dog Consulting Message-ID: <04c001d4c938$7e3d86e0$7ab894a0$@olddog.co.uk> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Mailer: Microsoft Outlook 16.0 Thread-Index: AQF4uyAuQiUz1zT6JW7t9AabcMIgdqag+eEA Content-Language: en-gb X-Originating-IP: 114.247.104.200 X-Thinkmail-Auth: adrian@olddog.co.uk X-TM-AS-GCONF: 00 X-TM-AS-Product-Ver: IMSVA-9.0.0.1623-8.2.0.1013-24444.000 X-TM-AS-Result: No--6.875-10.0-31-10 X-imss-scan-details: No--6.875-10.0-31-10 X-TMASE-Version: IMSVA-9.0.0.1623-8.2.1013-24444.000 X-TMASE-Result: 10--6.875100-10.000000 X-TMASE-MatchedRID: oHOSwQSJZWjxIbpQ8BhdbBMMmcrjEONd+IfriO3cV8SabNoYojBQdiGZ 6VVOVYeW7dnYL8JC+0XUmqAjrrnfrJIB4waj1+h9CmEn+y8Sa8b2kudi1D33EjyC5ddG2JcgMHF tu0lPAG76E2YHggZaQtcpv7GvOwuKFDf/GgM78iUXrP0cYcrA23OKOUMFh4P85DJ1FS+XdBP7XJ 5E3BcU3MyPK22RoB20JIVdEtqJTGx4+z8LHUMl3Z1U1lojafr/bv16+gil4jeX1RWcrwojHEj8A tVpDcmgwbJMFgUlJjevc0qsf6qV8Ucld4HSm4ijsyNb+yeIRAoTskidPjB12gDqzaYhcjeQAX0N cth4O8nnICRLH3OSnjU3TINr6s6sbLfoydCzQDMOrlBkQa9qFiNGSJ9zRuUNCVuEXtlNqcv1Xsi 2J/hIsxPyIdXWTILbw6cKPh/0DZG5F/6XhVIKVo3NgkEqAN0RfS0Ip2eEHnwa2S8rkvtFcbDszp 3K5gqDjoczmuoPCq3ZtQwo6oIY+se6fE3ZVPPhAYB8H/4m94QlsEBx8s1Oadlhg0pKM5dp X-TMASE-SNAP-Result: 1.821001.0001-0-1-12:0,22:0,33:0,34:0-0 Archived-At: Subject: Re: [mpls] Genart last call review of draft-ietf-mpls-sr-over-ip-02 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 20 Feb 2019 16:22:45 -0000 That's a good review, Robert, thank you. The changes look achievable to me, and I'm sure the author team can work = to include them. Cheers, Adrian -- Want to buy a signed copy of a book of fairy stories for adults of all = ages? Send me an email and I'll bring one to Prague for you. "Tales from the Wood" "More Tales from the Wood" "Tales from Beyond the Wood" https://www.feedaread.com/profiles/8604/ -----Original Message----- From: ietf On Behalf Of Robert Sparks Sent: 20 February 2019 15:48 To: gen-art@ietf.org Cc: mpls@ietf.org; ietf@ietf.org; = draft-ietf-mpls-sr-over-ip.all@ietf.org Subject: Genart last call review of draft-ietf-mpls-sr-over-ip-02 Reviewer: Robert Sparks Review result: Ready with Nits I am the assigned Gen-ART reviewer for this draft. The General Area Review Team (Gen-ART) reviews all IETF documents being processed by the IESG for the IETF Chair. Please treat these comments just like any other last call comments. For more information, please see the FAQ at . Document: draft-ietf-mpls-sr-over-ip-02 Reviewer: Robert Sparks Review Date: 2019-02-20 IETF LC End Date: 2019-02-26 IESG Telechat date: Not scheduled for a telechat Summary: Ready, but with nits that should be addressed before = publication as a Standards Track RFC Nits The 2nd sentence of the introduction is complex. It should be easy to = simplify. It would help to place the reference to draft-ietf-mpls-spring-entropy = label at "If encoding of entropy is desired". (Or if some other reference is = better, use that) In that same paragraph, something is wrong at "make use of entropy label mechanism." Should that be "the entropy label mechanism"? SRGB is used without expansion. Where is "the lower bound" of an SRGB defined? The string "lower bound" = doesn't occur in either of the routing-extensions drafts referenced where SRGB = is first used. Section 3.1 is about ostensibly about constructing a FIB entry, but its = last step is sending a packet. The first sentence in section 3.2 is more complex than it needs to be. = It should be easy to simplify. It would be nice if you could make the differences between the routers = in figures 3 and 4 visually apparent rather than relying on text to explain = the difference. Something like (view in a fixed width font): s-----s i-----i | A +------+ B +-- s-----s i--+--i | At the first paragraph on page 9: s/and then process/and then processes/ From nobody Wed Feb 20 16:41:02 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id B9F3F130F28; Wed, 20 Feb 2019 16:41:00 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.899 X-Spam-Level: X-Spam-Status: No, score=-1.899 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Brco5pg6l771; Wed, 20 Feb 2019 16:40:57 -0800 (PST) Received: from pipi.pi.nu (pipi.pi.nu [83.168.239.141]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id E3602130F47; Wed, 20 Feb 2019 16:40:55 -0800 (PST) Received: from [192.168.1.20] (unknown [119.94.169.156]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: loa@pi.nu) by pipi.pi.nu (Postfix) with ESMTPSA id D39D81801556; Thu, 21 Feb 2019 01:40:51 +0100 (CET) To: tom petch , "mpls@ietf.org" Cc: "mpls-chairs@ietf.org" , "draft-zheng-mpls-lsp-ping-yang-cfg@ietf.org" References: <98db7e71-6152-1335-8ca0-b5ae67b8a4b6@pi.nu> <020301d4c90f$748bd300$4001a8c0@gateway.2wire.net> From: Loa Andersson Message-ID: Date: Thu, 21 Feb 2019 08:40:46 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.5.1 MIME-Version: 1.0 In-Reply-To: <020301d4c90f$748bd300$4001a8c0@gateway.2wire.net> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Archived-At: Subject: Re: [mpls] Working Group Adoption Poll on draft-zheng-mpls-lsp-ping-yang-cfg X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 21 Feb 2019 00:41:01 -0000 Tom, Much as I appreciate your comments, and I agree with the technical aspects of them. The references and the inconsistencies should be fixed. However, I have a little bit different view of what should be done. It is clear that we need a YANG module for LSP Ping. It is unlikely that there will be another document. This document has been very slow developing, the first version is from 2015. I think that we should say that this is "a good enough starting point", and that there are thing that need to be fixed before publication, e.g the RPCs mentioned by Acee, and the lack of references and the potential inconsistencies pointed out by you. To put the working group in control of the draft and make sure that it progress well I want to adaopt it as a working group document. The only thing I believe is necessary is that the authors acknowledge that the issues pointed out needs to be addressed. /Loa On 2019-02-20 19:30, tom petch wrote: > Not support > > The YANG module is very weak on references which makes it hard for me to > be sure but there seems to be a mismatch between e.g. FEC classes in > RFC8029 and the YANG module. > > Thus RFC809 has > 1 5 LDP IPv4 prefix > with a one byte prefix length and four byte prefix. > > The YANG module has > enum ip-prefix { > value "0"; > description "IPv4/IPv6 prefix"; > and > choice target-fec { > case ip-prefix { > leaf ip-address { > type inet:ip-address; > description "IPv4/IPv6 Prefix"; > where ip-address has no concept of prefix length how can that be > configured?. > > There are many such instances IMHO; having references in the YANG module > to sections of RFC8029 would make this more apparent. > > Tom Petch > > ----- Original Message ----- > From: "Loa Andersson" > To: > Cc: ; > > Sent: Wednesday, February 20, 2019 5:35 AM > >> Working Group, >> >> This is to start a two week poll on adopting >> draft-zheng-mpls-lsp-ping-yang-cfg-10 >> as a MPLS working group document. >> >> Please send your comments (support/not support) to the mpls working >> group mailing list (mpls@ietf.org). Please give a technical >> motivation for your support/not support, especially if you think that >> the document should not be adopted as a working group document. >> >> We have done an IPR poll for this document. All the co-authors have >> responded to the IPR poll that they are unaware of any IPRs that > relates >> to this draft. >> >> All, the contributors (with one exception) have responded to the IPR >> poll that they are unaware of any IPRs that relates to this draft. >> >> The contributor that has not responded has left his former employment >> and is no longer on the MPLS wg mailing list. The wg chairs has > decided >> to go ahead with the wgap. If there is any concerns about this, please >> speak up in the mailing list. >> >> There are no IPR disclosures against this document. >> >> The working group adoption poll ends March 6, 2019. >> >> /Loa >> >> mpls wg co-chair >> -- >> >> >> Loa Andersson email: loa@pi.nu >> Senior MPLS Expert >> Bronze Dragon Consulting phone: +46 739 81 21 64 >> >> _______________________________________________ >> mpls mailing list >> mpls@ietf.org >> https://www.ietf.org/mailman/listinfo/mpls > -- Loa Andersson email: loa@pi.nu Senior MPLS Expert Bronze Dragon Consulting phone: +46 739 81 21 64 From nobody Wed Feb 20 19:57:58 2019 Return-Path: X-Original-To: mpls@ietf.org Delivered-To: mpls@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 0258512D4F2; Wed, 20 Feb 2019 19:57:57 -0800 (PST) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: Carlos Pignataro To: Cc: mpls@ietf.org, draft-ietf-mpls-sfc-encapsulation.all@ietf.org, ietf@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 6.91.0 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <155072147698.20210.381511429964485828@ietfa.amsl.com> Date: Wed, 20 Feb 2019 19:57:57 -0800 Archived-At: Subject: [mpls] Opsdir last call review of draft-ietf-mpls-sfc-encapsulation-02 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 21 Feb 2019 03:57:57 -0000 Reviewer: Carlos Pignataro Review result: Has Issues Reviewer: Carlos Pignataro Review Result: Has Issues I have reviewed this document as part of the Operational directorate's ongoing effort to review all IETF documents being processed by the IESG. These comments were written with the intent of improving the operational aspects of the IETF drafts. Comments that are not addressed in last call may be included in AD reviews during the IESG review. Document editors and WG chairs should treat these comments just like any other last call comments. This document is highly readable, includes very clear textual descriptions, and is very well organized. Easy to read in its simplicity. However, it would benefit from a more explicit connection to the transport encap mechanics from RFC 8300 (e.g., S4, S6.1). Specifically, I'd recommend adding a Figure or an SFF NSH Mapping Table example, to depict and/or exemplify the SFF function. >From an Operational standpoint, the document seems largely appropriate in terms of dataplane considerations. Some key considerations are explicitly out of scope: The method used by the downstream receiving node to advertise SFF Labels to the upstream sending node is out of scope of this document. This really seems to mean that, with the simple definition in this Informational document, interoperable implementations cannot yet exist. If there is no mechanism to advertise the SFF Label or to manage the semantics of this particular label, how will it know? Static configuration, which is not covered anyway, is not in my humble opinion a manageable scalable approach. Title: MPLS Encapsulation For The SFC NSH RFC 8300 makes an explicit distinction between the terms 'encapsulation' and 'transport encapsulation' (see e.g., Figure 1, Section 1.5 5., and Section 4 of RFC 8300). It seems to me that this is the "MPLS Transport Encapsulation for the SFC NSH" 2. MPLS Encapsulation Using an SFF Label Similarly, "2. MPLS Transport Encapsulation Using an SFF Label" The encapsulation is a standard MPLS label stack [RFC3032] with an SFF Label at the bottom of the stack, followed by a NSH as defined by [RFC8300] and the NSH payload. Insteadf of "NSH payload" I think "orignal packet" is meant. Also, this encapsulation is Underdefined: What is the value of TTL? TC? Much like a pseudowire label, an SFF Label is allocated by the downstream receiver of the NSH from its per-platform label space. A PW Label is more restrictive. RFC 8077 says it MUST be allocated as per-platform: egress LSR only. Note that the PW label must always be at the bottom of the packet's label stack, and labels MUST be allocated from the per-platform label space. Is this the case for the SFF Label as well? If so, what is the implication of the MUST? If not, why is it different than other equivalent similar labels? 2. Push the SFF Label to identify the desired SFF in the receiving MPLS node. TTL value? 1? 2? 255 for GTSM? GTSM RFC 5082 could be used here. 4. Operations, Administration, and Maintenance (OAM) Considerations OAM at the SFC Layer is handled by SFC-defined mechanisms [RFC8300]. However, OAM may be required at the MPLS transport layer. If so, then standard MPLS-layer OAM mechanisms such as the Generic Associated Channel [RFC5586] label may be used. RFC 5586 is _not_ an OAM mechanism. It is an associated channel creation mechanism, over which OAM could be carried. Thus, what traditional MPLS OAM can be carried here? Things like RFC 4379 / RFC 8029 would need the definition of an SFF Label FEC (which does not exist). Which other one? IP/ICMP seems of very limited value. 6. Security Considerations Have you considered the use of GTSM? 8. References [RFC7665] Halpern, J., Ed. and C. Pignataro, Ed., "Service Function Chaining (SFC) Architecture", RFC 7665, DOI 10.17487/RFC7665, October 2015, . SHould RFC 7665 be Normative? It defines the "SFF" which is quite central to understanding this document. Other Nits and Editorials: SFF Labels are similar to other service labels at the bottom of an MPLS label stack that denote the contents of the MPLS payload being other than IP, such as a layer 2 pseudowire, an IP packet that is routed in a VPN context with a private address, or an Ethernet virtual private wire service. This says "being other than IP, such as IP", which seems to be self-contradictory :-) Best, Carlos Pignataro. 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X-Gm-Message-State: AHQUAubvVmGmBNTuKsjDykYluFNwitCSHYyq11hOFq9CfXPcZlkwW7+Q /6GTI/CLdeLOSrjVTmD08MGrqbGkU8QR4zYU7QI= X-Google-Smtp-Source: AHgI3IZEAiksJagQEjuVEl6RRHr6vnn/NLfYbZ42JBL/YDvb8NQoLtsbzJW+5HqrfT0o7QkVYB0eb871Rp52HWXMWNw= X-Received: by 2002:a2e:8446:: with SMTP id u6-v6mr24665903ljh.74.1550768513409; Thu, 21 Feb 2019 09:01:53 -0800 (PST) MIME-Version: 1.0 References: <98db7e71-6152-1335-8ca0-b5ae67b8a4b6@pi.nu> <020301d4c90f$748bd300$4001a8c0@gateway.2wire.net> <030301d4c9df$2602e180$4001a8c0@gateway.2wire.net> In-Reply-To: <030301d4c9df$2602e180$4001a8c0@gateway.2wire.net> From: Greg Mirsky Date: Thu, 21 Feb 2019 09:01:44 -0800 Message-ID: To: tom petch Cc: "mpls@ietf.org" , Loa Andersson , "mpls-chairs@ietf.org" , "draft-zheng-mpls-lsp-ping-yang-cfg@ietf.org" Content-Type: multipart/alternative; boundary="0000000000005ee9e105826a6e0f" Archived-At: Subject: Re: [mpls] Working Group Adoption Poll on draft-zheng-mpls-lsp-ping-yang-cfg X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 21 Feb 2019 17:02:00 -0000 --0000000000005ee9e105826a6e0f Content-Type: text/plain; charset="UTF-8" Hi Tom, much appreciate your comments, suggestions. The original source for the model was RFC 4379, not RFC 8029. I understand that a lot of work is ahead for us with the model, document. I hope that the WG will actively participate and contribute to complete the model in a reasonable time. Regards, Greg On Thu, Feb 21, 2019 at 4:17 AM tom petch wrote: > ----- Original Message ----- > From: "Loa Andersson" > Sent: Thursday, February 21, 2019 12:40 AM > > > Tom, > > > > Much as I appreciate your comments, and I agree with the technical > > aspects of them. The references and the inconsistencies should be > > fixed. However, I have a little bit different view of what should > > be done. > > > > It is clear that we need a YANG module for LSP Ping. > > > > It is unlikely that there will be another document. > > > > This document has been very slow developing, the first version is > > from 2015. > > > > I think that we should say that this is "a good enough starting > > point", and that there are thing that need to be fixed before > > publication, e.g the RPCs mentioned by Acee, and the lack of > references > > and the potential inconsistencies pointed out by you. > > Which is where we part company. After three years, and 10 revisions, I > look for more. In particular, I see too much discrepancy between the > YANG module and RFC8029, although, as I said, the lack of references and > the change of identifiers for FEC classes and the conflation of FEC > classes, makes comparison difficult for me. > > RFC8029 list 16 FEC, this I-D six; Why the elision? What is the mapping? > > This I-D uses enumeration and provides a numeric value. The numeric > value is not present on the wire and so usually is not specified in a > YANG module, except as documentation - here the values specified bear no > relationship to the RFC and so confuse me (Common practice now is to > use YANG identity rather than enumeration although neither are ideal). > > Taking a guess at the mapping, compared to RFC8029, > > case ip-prefix { > lacks prefix length > > case bgp { > lacks prefix length > > case rsvp { > I struggle with - the I-D only defines a string, the RFC > IPv4 tunnel end point address > Tunnel ID > Extended Tunnel ID > IPv4 tunnel sender address > LSP ID > > case vpn { > defines leaf vrf-name { type uint32; "Layer3 VPN Name"; > leaf vpn-ip-address type inet:ip-address; "Layer3 VPN IPv4 > Prefix"; > which lacks prefix length and Route Distinguisher (8 octets) compared > to the RFC > > case pw > has > leaf vcid { type uint32; > while the RFC has > Sender's PE IPv4 Address > Remote PE IPv4 Address > PW ID > PW Type > > case vpls { > appears to be an (unfortunate) renaming of FEC129 and specifies > leaf vsi-name { type string; description "VPLS VSI"; > where the RFC has AGI AII etc > > So we agree that we need the ability to configure the functions of > RFC8029, but this I-D seems somewhat removed from that, too far to > become a WG I-D IMHO. > > Tom Petch > > > > > To put the working group in control of the draft and make sure that it > > progress well I want to adaopt it as a working group document. The > > only thing I believe is necessary is that the authors acknowledge that > > the issues pointed out needs to be addressed. > > > > /Loa > > > > On 2019-02-20 19:30, tom petch wrote: > > > Not support > > > > > > The YANG module is very weak on references which makes it hard for > me to > > > be sure but there seems to be a mismatch between e.g. FEC classes in > > > RFC8029 and the YANG module. > > > > > > Thus RFC809 has > > > 1 5 LDP IPv4 prefix > > > with a one byte prefix length and four byte prefix. > > > > > > The YANG module has > > > enum ip-prefix { > > > value "0"; > > > description "IPv4/IPv6 prefix"; > > > and > > > choice target-fec { > > > case ip-prefix { > > > leaf ip-address { > > > type inet:ip-address; > > > description "IPv4/IPv6 Prefix"; > > > where ip-address has no concept of prefix length how can that be > > > configured?. > > > > > > There are many such instances IMHO; having references in the YANG > module > > > to sections of RFC8029 would make this more apparent. > > > > > > Tom Petch > > > > > > ----- Original Message ----- > > > From: "Loa Andersson" > > > To: > > > Cc: ; > > > > > > Sent: Wednesday, February 20, 2019 5:35 AM > > > > > >> Working Group, > > >> > > >> This is to start a two week poll on adopting > > >> draft-zheng-mpls-lsp-ping-yang-cfg-10 > > >> as a MPLS working group document. > > >> > > >> Please send your comments (support/not support) to the mpls working > > >> group mailing list (mpls@ietf.org). Please give a technical > > >> motivation for your support/not support, especially if you think > that > > >> the document should not be adopted as a working group document. > > >> > > >> We have done an IPR poll for this document. All the co-authors have > > >> responded to the IPR poll that they are unaware of any IPRs that > > > relates > > >> to this draft. > > >> > > >> All, the contributors (with one exception) have responded to the > IPR > > >> poll that they are unaware of any IPRs that relates to this draft. > > >> > > >> The contributor that has not responded has left his former > employment > > >> and is no longer on the MPLS wg mailing list. The wg chairs has > > > decided > > >> to go ahead with the wgap. If there is any concerns about this, > please > > >> speak up in the mailing list. > > >> > > >> There are no IPR disclosures against this document. > > >> > > >> The working group adoption poll ends March 6, 2019. > > >> > > >> /Loa > > >> > > >> mpls wg co-chair > > >> -- > > >> > > >> > > >> Loa Andersson email: loa@pi.nu > > >> Senior MPLS Expert > > >> Bronze Dragon Consulting phone: +46 739 81 21 64 > > >> > > >> _______________________________________________ > > >> mpls mailing list > > >> mpls@ietf.org > > >> https://www.ietf.org/mailman/listinfo/mpls > > > > > > > -- > > > > > > Loa Andersson email: loa@pi.nu > > Senior MPLS Expert > > Bronze Dragon Consulting phone: +46 739 81 21 64 > > --0000000000005ee9e105826a6e0f Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi Tom,
much appreciate your comments, suggestions.
The original source for the model was RFC 4379, not RFC 8029. I und= erstand that a lot of work is ahead for us with the model, document. I hope= that the WG will actively participate and contribute to complete the model= in a reasonable time.

Regards,
Greg

On Thu, Feb 21, 2019 at 4:17 AM tom petch <ietfc@btconnect.com> wrote:
----- Original Message -----
From: "Loa Andersson" <loa@pi.nu>
Sent: Thursday, February 21, 2019 12:40 AM

> Tom,
>
> Much as I appreciate your comments, and I agree with the technical
> aspects of them. The references and the inconsistencies should be
> fixed. However, I have a little bit different view of what should
> be done.
>
> It is clear that we need a YANG module for LSP Ping.
>
> It is unlikely that there will be another document.
>
> This document has been very slow developing, the first version is
> from 2015.
>
> I think that we should say that this is "a good enough starting > point", and that there are thing that need to be fixed before
> publication, e.g the RPCs mentioned by Acee, and the lack of
references
> and the potential inconsistencies pointed out by you.

Which is where we part company.=C2=A0 After three years, and 10 revisions, = I
look for more.=C2=A0 In particular, I see too much discrepancy between the<= br> YANG module and RFC8029, although, as I said, the lack of references and the change of identifiers for FEC classes and the conflation of FEC
classes,=C2=A0 makes comparison difficult for me.

RFC8029 list 16 FEC, this I-D six; Why the elision? What is the mapping?
This I-D uses enumeration and provides a numeric value.=C2=A0 The numeric value is not present on the wire and so usually is not specified in a
YANG module, except as documentation - here the values specified bear no relationship to the RFC and so confuse me=C2=A0 (Common practice now is to<= br> use YANG identity rather than enumeration although neither are ideal).

Taking a guess at the mapping, compared to RFC8029,

=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 case ip-prefix {
lacks prefix length

=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 case bgp {
=C2=A0lacks prefix length

=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 case rsvp {
I struggle with - the I-D only defines a string, the RFC
=C2=A0 =C2=A0 IPv4 tunnel end point address
=C2=A0 =C2=A0 Tunnel ID
=C2=A0 =C2=A0 Extended Tunnel ID
=C2=A0 =C2=A0 IPv4 tunnel sender address
=C2=A0 =C2=A0 LSP ID

=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 case vpn {
defines=C2=A0 leaf vrf-name { type uint32;=C2=A0 "Layer3 VPN Name"= ;;
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 leaf vpn-ip-address type inet:ip-= address; "Layer3 VPN IPv4
Prefix";
which lacks prefix length and Route Distinguisher (8 octets)=C2=A0 compared=
to the RFC

=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 case pw
has
=C2=A0 =C2=A0leaf vcid {=C2=A0 type uint32;
while the RFC has
=C2=A0 =C2=A0 Sender's PE IPv4 Address
=C2=A0 =C2=A0 Remote PE IPv4 Address
=C2=A0 =C2=A0 PW ID
=C2=A0 =C2=A0 PW Type

=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 case vpls {
appears to be an (unfortunate) renaming of FEC129 and specifies
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0leaf vsi-name { type string; description = "VPLS VSI";
where the RFC has AGI AII etc

So we agree that we need the ability to configure the functions of
RFC8029, but this I-D seems somewhat removed from that, too far to
become a WG I-D IMHO.

Tom Petch

>
> To put the working group in control of the draft and make sure that it=
> progress well I want to adaopt it as a working group document. The
> only thing I believe is necessary is that the authors acknowledge that=
> the issues pointed out needs to be addressed.
>
> /Loa
>
> On 2019-02-20 19:30, tom petch wrote:
> > Not support
> >
> > The YANG module is very weak on references which makes it hard fo= r
me to
> > be sure but there seems to be a mismatch between e.g. FEC classes= in
> > RFC8029 and the YANG module.
> >
> > Thus RFC809 has
> >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A01=C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 5=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0LDP IPv4 prefix
> > with a one byte prefix length and four byte prefix.
> >
> > The YANG module has
> >=C2=A0 =C2=A0 =C2=A0 =C2=A0 enum ip-prefix {
> >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 value "0";
> >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 description "IPv4/IPv6 pre= fix";
> > and
> >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 choice target-fec {
> >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 case ip-prefix {
> >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 leaf ip-address {=
> >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 type inet:= ip-address;
> >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 descriptio= n "IPv4/IPv6 Prefix";
> > where ip-address has no concept of prefix length how can that be<= br> > > configured?.
> >
> > There are many such instances IMHO; having references in the YANG=
module
> > to sections of RFC8029 would make this more apparent.
> >
> > Tom Petch
> >
> > ----- Original Message -----
> > From: "Loa Andersson" <loa@pi.nu>
> > To: <mpls@i= etf.org>
> > Cc: <mpls-chairs@ietf.org>;
> > <draft-zheng-mpls-lsp-ping-yang-cfg@ietf.org>
> > Sent: Wednesday, February 20, 2019 5:35 AM
> >
> >> Working Group,
> >>
> >> This is to start a two week poll on adopting
> >> draft-zheng-mpls-lsp-ping-yang-cfg-10
> >> as a MPLS working group document.
> >>
> >> Please send your comments (support/not support) to the mpls w= orking
> >> group mailing list (mpls@ietf.org). Please give a technical
> >> motivation for your support/not support, especially if you th= ink
that
> >> the document should not be adopted as a working group documen= t.
> >>
> >> We have done an IPR poll for this document. All the co-author= s have
> >> responded to the IPR poll that they are unaware of any IPRs t= hat
> > relates
> >> to this draft.
> >>
> >> All, the contributors (with one exception) have responded to = the
IPR
> >> poll that they are unaware of any IPRs that relates to this d= raft.
> >>
> >> The contributor that has not responded has left his former employment
> >> and is no longer on the MPLS wg mailing list. The wg chairs h= as
> > decided
> >> to go ahead with the wgap. If there is any concerns about thi= s,
please
> >> speak up in the mailing list.
> >>
> >> There are no IPR disclosures against this document.
> >>
> >> The working group adoption poll ends March 6, 2019.
> >>
> >> /Loa
> >>
> >> mpls wg co-chair
> >> --
> >>
> >>
> >> Loa Andersson=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0= =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 email: loa@pi.nu
> >> Senior MPLS Expert
> >> Bronze Dragon Consulting=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0phone: +46 739 81 21 64
> >>
> >> _______________________________________________
> >> mpls mailing list
> >> mpls@ietf.= org
> >> https://www.ietf.org/mailman/listinfo/mpls
> >
>
> --
>
>
> Loa Andersson=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 email:
loa@pi.nu
> Senior MPLS Expert
> Bronze Dragon Consulting=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0phone: +46 739 81 21 64

--0000000000005ee9e105826a6e0f-- From nobody Thu Feb 21 10:06:48 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 37AA713108C; Thu, 21 Feb 2019 10:06:39 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.998 X-Spam-Level: X-Spam-Status: No, score=-1.998 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Q0jiG1PUf4hm; Thu, 21 Feb 2019 10:06:36 -0800 (PST) Received: from mail-qt1-x82d.google.com (mail-qt1-x82d.google.com [IPv6:2607:f8b0:4864:20::82d]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 37FD413108B; Thu, 21 Feb 2019 10:06:36 -0800 (PST) Received: by mail-qt1-x82d.google.com with SMTP id s1so6406931qte.5; Thu, 21 Feb 2019 10:06:36 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=5DU4A0cvGiFJKJgChxt6BFxScRZRP68oR2x9avJDc8s=; b=g3oI8bSYnqbVepOEeQYYV3TKwSlZhxF8IEai1gx9y/As8GdKibiWAXGuq3s6ioV5JY tjETYqRVXurBP/A7kj8xIHUD+/4UI8bm/V47/TwrLD6ErrSKPbAghf9oYdkkVRw8NoEQ Ow6KUXffdsSe5VRFUrBlYw2fTvbrHfwkpuGB82SxQ9vZ8qdjgPVMscx3E0hZbP8c6JOu Nu12sZBIKs2uuyE+Xi3lr2XmlBL11Yurpo1hzldVogDJ8uwFzJ10+tRt3Nc+p34NsxpI 7ohoNnQgF3+zsAuo4gwouVpNITUyEdzhISlMzOC7a4Gre8uYAsrk4dt0eOjxbWve6MsU iCFQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=5DU4A0cvGiFJKJgChxt6BFxScRZRP68oR2x9avJDc8s=; b=ayuxcEKWSVlAgxH1fOmyIOYDDgyrNdU3jYiGzpQ6xLPZAUAyXZ28+N4wDoNtMSPXct 8vOqEMX+sMoqdVUVq00JzyzoKVWvwcWOOb0Sh7mVP2zE23Y4u6ES9BSnmMuHmCfRh0x0 ei3bAV9ZcYCnuCS8zXajW7Q5GJy/k+B8k1l1cEQtiTaNm2K9aEHs/mhJTdEz+OWni4HD kqIBLeXXhp7oUu4y/0uO6+OdYt2EwhjwJZybtw89hNLELnCL5qxXaZJDUnQAfuZZKCOA tlDr4vu5/9u/h/gv1BrcWvQAQU2utNjVDAp+Sni216O68Y84gkUaEBKkIuexR9P/psbT gfoQ== X-Gm-Message-State: AHQUAuY5SjqVSYYP8Dp9a19RQI9XK/ET4tS+Ctdc5T5vSY6rFmqxyJy6 UBDx+Le004tFnfepZGy9FuYLu1bUMdHcNDTHSrolzep8 X-Google-Smtp-Source: AHgI3IZM/RpfgQ6z50h4yolpC/D1atzYCW/RjxNgKlhSXmiWzOvXNNkHzzpWPcQVuMneN7EtN9pOocozP4ozNGDR0BI= X-Received: by 2002:ac8:38ba:: with SMTP id f55mr32200094qtc.192.1550772395135; Thu, 21 Feb 2019 10:06:35 -0800 (PST) MIME-Version: 1.0 References: <155072147698.20210.381511429964485828@ietfa.amsl.com> In-Reply-To: <155072147698.20210.381511429964485828@ietfa.amsl.com> From: "Andrew G. Malis" Date: Thu, 21 Feb 2019 13:06:23 -0500 Message-ID: To: Carlos Pignataro Cc: ops-dir@ietf.org, mpls@ietf.org, draft-ietf-mpls-sfc-encapsulation.all@ietf.org, IETF Discussion , sfc@ietf.org Content-Type: multipart/alternative; boundary="000000000000bd572905826b55f9" Archived-At: Subject: Re: [mpls] Opsdir last call review of draft-ietf-mpls-sfc-encapsulation-02 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 21 Feb 2019 18:06:39 -0000 --000000000000bd572905826b55f9 Content-Type: text/plain; charset="UTF-8" Carlos, Many thanks for your review! I'm also including the SFC WG on my reply. Comments inline. On Wed, Feb 20, 2019 at 10:58 PM Carlos Pignataro wrote: > Reviewer: Carlos Pignataro > Review result: Has Issues > > Reviewer: Carlos Pignataro > Review Result: Has Issues > > I have reviewed this document as part of the Operational directorate's > ongoing effort to review all IETF documents being processed by the IESG. > These > comments were written with the intent of improving the operational aspects > of > the IETF drafts. Comments that are not addressed in last call may be > included > in AD reviews during the IESG review. Document editors and WG chairs > should > treat these comments just like any other last call comments. > > This document is highly readable, includes very clear textual > descriptions, and > is very well organized. Easy to read in its simplicity. However, it would > benefit from a more explicit connection to the transport encap mechanics > from > RFC 8300 (e.g., S4, S6.1). Specifically, I'd recommend adding a Figure or > an > SFF NSH Mapping Table example, to depict and/or exemplify the SFF function. > I'm trying to envision what would make a good figure here. We could add an additional line to Table 1 of RFC 8300 and reference that table: +------+------+---------------------+-------------------------+ | SPI | SI | Next Hop(s) | Transport Encapsulation | +------+------+---------------------+-------------------------+ | 25 | 220 | Label 5467 | MPLS | +------+------+---------------------+-------------------------+ Is that what you had in mind? If not, I'm open to other suggestions. > > >From an Operational standpoint, the document seems largely appropriate in > terms > of dataplane considerations. Some key considerations are explicitly out of > scope: > The method used by the downstream receiving node to advertise SFF > Labels to the upstream sending node is out of scope of this document. > > This really seems to mean that, with the simple definition in this > Informational document, interoperable implementations cannot yet exist. If > there is no mechanism to advertise the SFF Label or to manage the > semantics of > this particular label, how will it know? Static configuration, which is not > covered anyway, is not in my humble opinion a manageable scalable approach. > Actually, while it is outside the scope of this document, it is within the scope of draft-ietf-bess-nsh-bgp-control-plane, and text is being added to the next revision of that draft to show how it can be used to signal the encapsulation defined here. This was worked out after this draft was forwarded to the IESG, but we can now add a reference to that draft seeing as we'll be doing a post-last-call update. > > Title: MPLS Encapsulation For The SFC NSH > > RFC 8300 makes an explicit distinction between the terms 'encapsulation' > and > 'transport encapsulation' (see e.g., Figure 1, Section 1.5 5., and Section > 4 of > RFC 8300). > > It seems to me that this is the "MPLS Transport Encapsulation for the SFC > NSH" > Thanks, we'll fix that. > > 2. MPLS Encapsulation Using an SFF Label > > Similarly, "2. MPLS Transport Encapsulation Using an SFF Label" > > The encapsulation is a standard MPLS label stack [RFC3032] with an > SFF Label at the bottom of the stack, followed by a NSH as defined by > [RFC8300] and the NSH payload. > > Insteadf of "NSH payload" I think "orignal packet" is meant. > RFC 8300 uses both "payload" and "original packet/frame", but the latter more than the former. So we can change "payload" to "original packet/frame". > > Also, this encapsulation is Underdefined: What is the value of TTL? TC? > I've been looking back at other related RFCs (such as PW and IP VPN label definitions) and they're also mostly silent on these values. I did find the following in RFC 6073: The setting of the TTL of the PW MPLS label is a matter of local policy on the originating PE, but SHOULD be set to 255. Regarding the TC, we can follow the example of RFC 6391: This document does not define a use for the Traffic Class (TC) field [RFC5462 ] (formerly known as the Experimental Use (EXP) bits [RFC3032 ]) in the flow label. Future documents may define a use for these bits; therefore, implementations conforming to this specification MUST set the TC field to zero at the ingress and MUST ignore them at the egress. Do you have any alternative suggestions? > > Much like a pseudowire label, an SFF Label is allocated by the > downstream receiver of the NSH from its per-platform label space. > > A PW Label is more restrictive. RFC 8077 says it MUST be allocated as > per-platform: > > egress LSR only. Note that the PW label must always be at the bottom > of the packet's label stack, and labels MUST be allocated from the > per-platform label space. > > Is this the case for the SFF Label as well? If so, what is the implication > of > the MUST? If not, why is it different than other equivalent similar labels? > We can change the text to: Much like a pseudowire label, an SFF Label MUST be allocated by the downstream receiver of the NSH from its per-platform label space, since the meaning of the label is identical independent of which incoming interface it is received [RFC3031]. > 2. Push the SFF Label to identify the desired SFF in the receiving > MPLS node. > > TTL value? 1? 2? 255 for GTSM? GTSM RFC 5082 could be used here. > As I noted above, 255, although I used RFC 6073 as my source rather than 5082. We'll add that here as well. > 4. Operations, Administration, and Maintenance (OAM) Considerations > > OAM at the SFC Layer is handled by SFC-defined mechanisms [RFC8300]. > However, OAM may be required at the MPLS transport layer. If so, > then standard MPLS-layer OAM mechanisms such as the Generic > Associated Channel [RFC5586] label may be used. > > RFC 5586 is _not_ an OAM mechanism. It is an associated channel creation > mechanism, over which OAM could be carried. > > Thus, what traditional MPLS OAM can be carried here? Things like RFC 4379 > / RFC > 8029 would need the definition of an SFF Label FEC (which does not exist). > Which other one? IP/ICMP seems of very limited value. > That's a good point about RFC 5586. The intention is that the MPLS OAM would be at the transport label layer above the SFF label, so most any MPLS-layer OAM would be applicable. So how about rewording to make that more clear: OAM at the SFC Layer is handled by SFC-defined mechanisms [RFC8300]. However, OAM may be required at the MPLS transport layer. If so, then standard MPLS-layer OAM mechanisms may be used at the transport label layer (the labels above the SFF label). > > 6. Security Considerations > > Have you considered the use of GTSM? > No, we hadn't. Can you point me to any examples of GTSM being used in an MPLS or PW context? > > 8. References > > [RFC7665] Halpern, J., Ed. and C. Pignataro, Ed., "Service Function > Chaining (SFC) Architecture", RFC 7665, > DOI 10.17487/RFC7665, October 2015, > . > > SHould RFC 7665 be Normative? It defines the "SFF" which is quite central > to > understanding this document. > Good point. It was there because 7665 is an Informational RFC, but RFC 8067 does allow normative references to informational RFCs, so I'll move it. > > Other Nits and Editorials: > > SFF Labels are similar to other service labels at the bottom of an > MPLS label stack that denote the contents of the MPLS payload being > other than IP, such as a layer 2 pseudowire, an IP packet that is > routed in a VPN context with a private address, or an Ethernet > virtual private wire service. > > This says "being other than IP, such as IP", which seems to be > self-contradictory :-) > > :-) How about we change "other than IP," to "other than a normally routed IP packet", Thanks again, Andy --000000000000bd572905826b55f9 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Carlos,

Man= y thanks for your review! I'm also including the SFC WG on my reply.

Comments inline.

On Wed, Feb 20, 2019 at 10:58 PM Car= los Pignataro <cpignata@cisco.com<= /a>> wrote:
R= eviewer: Carlos Pignataro
Review result: Has Issues

Reviewer: Carlos Pignataro
Review Result: Has Issues

I have reviewed this document as part of the Operational directorate= 9;s
ongoing effort to review all IETF documents being processed by the I= ESG.=C2=A0 These
comments were written with the intent of improving the = operational aspects of
the IETF drafts. Comments that are not addressed = in last call may be included
in AD reviews during the IESG review.=C2=A0= Document editors and WG chairs should
treat these comments just like an= y other last call comments.

This document is highly readable, includes very clear textual descripti= ons, and
is very well organized. Easy to read in its simplicity. However= , it would
benefit from a more explicit connection to the transport enca= p mechanics from
RFC 8300 (e.g., S4, S6.1). Specifically, I'd recomm= end adding a Figure or an
SFF NSH Mapping Table example, to depict and/o= r exemplify the SFF function.


<= /div>
      +------=
+------+---------------------+-------------------------+
      | SPI  | SI   | Next Hop(s)   =
      | Transport Encapsulation |
      +------+------+---------------------+-------------------------+
=
      | 25   | 220  | L=
abel 5467          | MPLS                    |
      +------+------+---------------------+---=
----------------------+

=
Is that what you had in mind? If not, I'm open to other sugg= estions.
=C2=A0

>From an Operational standpoint, the document seems largely appropri= ate in terms
of dataplane considerations. Some key considerations are ex= plicitly out of
scope:
=C2=A0 =C2=A0The method used by the downstream= receiving node to advertise SFF
=C2=A0 =C2=A0Labels to the upstream sen= ding node is out of scope of this document.

This really seems to mean that, with the simple definition in this
I= nformational document, interoperable implementations cannot yet exist. Ifthere is no mechanism to advertise the SFF Label or to manage the semanti= cs of
this particular label, how will it know? Static configuration, whi= ch is not
covered anyway, is not in my humble opinion a manageable scala= ble approach.

Actually, while it is out= side the scope of this document, it is within the scope of=C2=A0draft-ietf-= bess-nsh-bgp-control-plane, and text is being added to the next revision of= that draft to show how it can be used to signal the encapsulation defined = here. This was worked out after this draft was forwarded to the IESG, but w= e can now add a reference to that draft seeing as we'll be doing a post= -last-call update.
=C2=A0

Title: MPLS Encapsulation For The SFC NSH

RFC 8300 makes an explicit distinction between the terms 'encapsula= tion' and
'transport encapsulation' (see e.g., Figure 1, Sec= tion 1.5 5., and Section 4 of
RFC 8300).

It seems to me that this is the "MPLS Transport Encapsulation for = the SFC NSH"

Thanks, we'll fix= that.
=C2=A0

2.=C2=A0 MPLS Encapsulation Using an SFF Label

Similarly, "2. MPLS Transport Encapsulation Using an SFF Label&quo= t;

=C2=A0 =C2=A0The encapsulation is a standard MPLS label stack [RFC3032]= with an
=C2=A0 =C2=A0SFF Label at the bottom of the stack, followed by = a NSH as defined by
=C2=A0 =C2=A0[RFC8300] and the NSH payload.

Insteadf of "NSH payload" I think "orignal packet" = is meant.

RFC 8300 uses both "payl= oad" and "original packet/frame", but the latter more than t= he former. So we can change "payload" to "original packet/fr= ame".
=C2=A0

Also, this encapsulation is Underdefined: What is the value of TTL? TC?=

I've been looking back at other re= lated RFCs (such as PW and IP VPN label definitions) and they're also m= ostly silent on these values. I did find the following in RFC 6073:



   This document does not define a use for=
 the Traffic Class (TC) field
   [RFC5462] (forme=
rly known as the Experimental Use (EXP) bits
   [RFC3032]) in the flow label.  Future documents=
 may define a use for
   these bits; therefore, implementations conforming to this
   specification MUST set the TC field to zero at the ingress and MUST
   ignore them at the egress.

Do you have = any alternative suggestions?
=C2=A0

=C2=A0 =C2=A0Much like a pseudowire label, an SFF Label is allocated by= the
=C2=A0 =C2=A0downstream receiver of the NSH from its per-platform l= abel space.

A PW Label is more restrictive. RFC 8077 says it MUST be allocated asper-platform:

=C2=A0 =C2=A0egress LSR only.=C2=A0 Note that the PW label must always = be at the bottom
=C2=A0 =C2=A0of the packet's label stack, and label= s MUST be allocated from the
=C2=A0 =C2=A0per-platform label space.

Is this the case for the SFF Label as well? If so, what is the implicat= ion of
the MUST? If not, why is it different than other equivalent simil= ar labels?

We can change the text to:

=C2=A0Much like a pseudowire label, an SFF Label MU= ST be allocated by the downstream receiver of the NSH from its per-platform= label space, since the meaning of the label is identical independent of wh= ich incoming interface it is received [RFC3031].


=C2=A0 =C2=A02.=C2=A0 Push the SFF Label to identify the desired SFF in= the receiving
=C2=A0 =C2=A0 =C2=A0 =C2=A0MPLS node.

TTL value? 1? 2? 255 for GTSM? GTSM RFC 5082 could be used here.

As I noted above, 255, although I used RFC 60= 73 as my source rather than 5082. We'll add that here as well.


4.=C2=A0 Operations, Administration, and Maintenance (OAM) Consideratio= ns

=C2=A0 =C2=A0OAM at the SFC Layer is handled by SFC-defined mechanisms = [RFC8300].
=C2=A0 =C2=A0However, OAM may be required at the MPLS transpo= rt layer.=C2=A0 If so,
=C2=A0 =C2=A0then standard MPLS-layer OAM mechani= sms such as the Generic
=C2=A0 =C2=A0Associated Channel [RFC5586] label = may be used.

RFC 5586 is _not_ an OAM mechanism. It is an associated channel creatio= n
mechanism, over which OAM could be carried.

Thus, what traditional MPLS OAM can be carried here? Things like RFC 43= 79 / RFC
8029 would need the definition of an SFF Label FEC (which does = not exist).
Which other one? IP/ICMP seems of very limited value.

That's a good point about RFC 5586. The i= ntention is that the MPLS OAM would be at the transport label layer above t= he SFF label, so most any MPLS-layer OAM would be applicable. So how about = rewording to make that more clear:

OAM at the SFC = Layer is handled by SFC-defined mechanisms [RFC8300]. However, OAM may be r= equired at the MPLS transport layer.=C2=A0 If so, then standard MPLS-layer = OAM mechanisms may be used at the transport label layer (the labels above t= he SFF label).
=C2=A0

6.=C2=A0 Security Considerations

Have you considered the use of GTSM?

No, we hadn't. Can you point me to any examples of GTSM being used in= an MPLS or PW context?
=C2=A0

8.=C2=A0 References

=C2=A0 =C2=A0[RFC7665]=C2=A0 Halpern, J., Ed. and C. Pignataro, Ed., &q= uot;Service Function
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Ch= aining (SFC) Architecture", RFC 7665,
=C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 DOI 10.17487/RFC7665, October 2015,
=C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <https://www.rfc-editor= .org/info/rfc7665>.

SHould RFC 7665 be Normative? It defines the "SFF" which is q= uite central to
understanding this document.

Good point. It was there because 7665 is an Informational RFC, but= RFC 8067 does allow normative references to informational RFCs, so I'l= l move it.
=C2=A0

Other Nits and Editorials:

=C2=A0 =C2=A0SFF Labels are similar to other service labels at the bott= om of an
=C2=A0 =C2=A0MPLS label stack that denote the contents of the M= PLS payload being
=C2=A0 =C2=A0other than IP, such as a layer 2 pseudowi= re, an IP packet that is
=C2=A0 =C2=A0routed in a VPN context with a pri= vate address, or an Ethernet
=C2=A0 =C2=A0virtual private wire service.<= br>
This says "being other than IP, such as IP", which seems to b= e
self-contradictory :-)

:-)

How about we change "other than IP," to "other than a= normally routed IP packet",

Thanks again,
Andy

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Malis" CC: "ops-dir@ietf.org" , mpls , "draft-ietf-mpls-sfc-encapsulation.all@ietf.org" , IETF Discussion , "sfc@ietf.org" Thread-Topic: [mpls] Opsdir last call review of draft-ietf-mpls-sfc-encapsulation-02 Thread-Index: AQHUyhBL6QxMzhBFbEuO+4PZE0wBEaXrX0GA Date: Fri, 22 Feb 2019 01:41:52 +0000 Message-ID: <6A97863A-DD90-4D62-9607-569386F5F850@cisco.com> References: <155072147698.20210.381511429964485828@ietfa.amsl.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: Apple Mail (2.3445.102.3) x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.118.116.133] Content-Type: multipart/alternative; boundary="_000_6A97863ADD904D629607569386F5F850ciscocom_" MIME-Version: 1.0 X-Outbound-SMTP-Client: 64.101.220.160, xch-rtp-020.cisco.com X-Outbound-Node: rcdn-core-5.cisco.com Archived-At: Subject: Re: [mpls] Opsdir last call review of draft-ietf-mpls-sfc-encapsulation-02 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Ij4NCjwvZGl2Pg0KPC9ib2R5Pg0KPC9odG1sPg0K --_000_6A97863ADD904D629607569386F5F850ciscocom_-- From nobody Fri Feb 22 00:16:30 2019 Return-Path: X-Original-To: mpls@ietf.org Delivered-To: mpls@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id B3FD5130E5B; Fri, 22 Feb 2019 00:16:26 -0800 (PST) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: Nicolai Leymann To: X-Test-IDTracker: no X-IETF-IDTracker: 6.91.0 Auto-Submitted: auto-generated Precedence: bulk Cc: mpls@ietf.org, iesg-secretary@ietf.org, mpls-chairs@ietf.org, n.leymann@telekom.de, Nicolai Leymann Message-ID: <155082338672.5530.13242949849431837123.idtracker@ietfa.amsl.com> Date: Fri, 22 Feb 2019 00:16:26 -0800 Archived-At: Subject: [mpls] Publication has been requested for draft-ietf-mpls-ri-rsvp-frr-05 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 22 Feb 2019 08:16:27 -0000 Nicolai Leymann has requested publication of draft-ietf-mpls-ri-rsvp-frr-05 as Proposed Standard on behalf of the MPLS working group. Please verify the document's state at https://datatracker.ietf.org/doc/draft-ietf-mpls-ri-rsvp-frr/ From nobody Fri Feb 22 06:28:19 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 7C515128B14; Fri, 22 Feb 2019 06:27:58 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.999 X-Spam-Level: X-Spam-Status: No, score=-1.999 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id wudulC6S0vZ5; Fri, 22 Feb 2019 06:27:54 -0800 (PST) Received: from mail-qk1-x72a.google.com (mail-qk1-x72a.google.com [IPv6:2607:f8b0:4864:20::72a]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id C8AD91200D7; Fri, 22 Feb 2019 06:27:53 -0800 (PST) Received: by mail-qk1-x72a.google.com with SMTP id m9so1223924qkl.4; Fri, 22 Feb 2019 06:27:53 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=MsL45pVdD5eFTzCxcEpxkHcA5BN9oOg/mLDJUyyc8T8=; b=rEFwOfeu3/4X2a4adw4l38DdvuLeGiB9UNmPadmIQO383H9eePoXAnkSV3nCfkFJi4 /z7t7OEEg6h8KlpBUnaYugWNKgvS2YUfgwutceMrlh/Yi6urAfMOFVFYR6d5GbfgBIz0 r6xu6CzEui8sD2B/oScstH7R7/Yqva/TawNH6Eb5tmfbKyOzfYh4bP7hEMa+ZEDWBnsM T9idE0HTpQDzZjTJGc91T/H5CXMI85jMT5uFIZYzDf/luppde+ETOzgsNwcRGXUttwgh w2m6sfTyr2GTlvO1EbTXCMUeUGc++a0X2wfNHkgaLIWBTjUTo7o6yNo1FHm7n6GnbdRq SPCA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=MsL45pVdD5eFTzCxcEpxkHcA5BN9oOg/mLDJUyyc8T8=; b=lPMx5BzVQ9S7HHpgbelJJZ6f7HOokZTMRdnpuxUYhTQEt+7mPSPttx3fQ/Dp8XDzS2 LW5GWVueAYuT9T55ANJ5NswB+kYD1401bumrVoyqtrWKOnQ/zHciEx7zfZbfaWvK75uI Zrd3BENQBT4Zf6S/G8A6lakgmlVvIdI2iQQ/Z1ZYjAVw/8GJcAWJRLgQU3e5sXfNDXL+ bVQqJQ96EpT+Lrl8FdKXaOmwQ8lxvAJpzqVmVIie381mF5obSB4wZUNVlGWB9OMKIj1t yVB/181XzSCnN3IdybelsiEMYPPYsusM9CHWPAH/zhnhYKpNDD7kODfuKO55rikImGx/ xhMA== X-Gm-Message-State: AHQUAuazgOG3UQK933yoG+rO5fOw6eRXem8QLXI0EG/U0k22BylNQOJx kUV59MV4v4amDA86+8UEja05z1e9P6LFGtfzQus= X-Google-Smtp-Source: AHgI3IZgumz8LhNkfwkkhXtC3UKECaQvLFVFYKwjpZkBHmCelFsvlyk+VQg0UBRY61Ko912nUBPxMzUiaUYkF5xemhE= X-Received: by 2002:ae9:ec0f:: with SMTP id h15mr3300880qkg.100.1550845672682; Fri, 22 Feb 2019 06:27:52 -0800 (PST) MIME-Version: 1.0 References: <155072147698.20210.381511429964485828@ietfa.amsl.com> <6A97863A-DD90-4D62-9607-569386F5F850@cisco.com> In-Reply-To: <6A97863A-DD90-4D62-9607-569386F5F850@cisco.com> From: "Andrew G. Malis" Date: Fri, 22 Feb 2019 09:27:41 -0500 Message-ID: To: "Carlos Pignataro (cpignata)" Cc: "ops-dir@ietf.org" , mpls , "draft-ietf-mpls-sfc-encapsulation.all@ietf.org" , IETF Discussion , "sfc@ietf.org" Content-Type: multipart/alternative; boundary="0000000000006bfb4005827c65f7" Archived-At: Subject: Re: [mpls] Opsdir last call review of draft-ietf-mpls-sfc-encapsulation-02 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 22 Feb 2019 14:27:59 -0000 --0000000000006bfb4005827c65f7 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Carlos, Looks good on all but one point - I think I see why you're referencing GTSM, since packets at the SFC layer would generally be one hop away from each other at that layer. Is that correct? However, I really don't have sufficient experience with GTSM to craft specific text. If you think it's important enough to include, could you propose some text for me to include? Thanks again, Andy On Thu, Feb 21, 2019 at 8:41 PM Carlos Pignataro (cpignata) < cpignata@cisco.com> wrote: > Hi, Andy, > > On Feb 21, 2019, at 1:06 PM, Andrew G. Malis wrote: > > Carlos, > > Many thanks for your review! I'm also including the SFC WG on my reply. > > > Thanks for the quick response, and for considering the comments! > > I enjoyed reading this document =E2=80=94 please see below. > > > Comments inline. > > On Wed, Feb 20, 2019 at 10:58 PM Carlos Pignataro > wrote: > >> Reviewer: Carlos Pignataro >> Review result: Has Issues >> >> Reviewer: Carlos Pignataro >> Review Result: Has Issues >> >> I have reviewed this document as part of the Operational directorate's >> ongoing effort to review all IETF documents being processed by the IESG. >> These >> comments were written with the intent of improving the operational >> aspects of >> the IETF drafts. Comments that are not addressed in last call may be >> included >> in AD reviews during the IESG review. Document editors and WG chairs >> should >> treat these comments just like any other last call comments. >> >> This document is highly readable, includes very clear textual >> descriptions, and >> is very well organized. Easy to read in its simplicity. However, it woul= d >> benefit from a more explicit connection to the transport encap mechanics >> from >> RFC 8300 (e.g., S4, S6.1). Specifically, I'd recommend adding a Figure o= r >> an >> SFF NSH Mapping Table example, to depict and/or exemplify the SFF >> function. >> > > I'm trying to envision what would make a good figure here. We could add a= n > additional line to Table 1 of RFC 8300 and reference that table: > > +------+------+---------------------+-------------------------+ > > | SPI | SI | Next Hop(s) | Transport Encapsulation | > +------+------+---------------------+-------------------------+ > > | 25 | 220 | Label 5467 | MPLS | > > +------+------+---------------------+-------------------------+ > > > Is that what you had in mind? If not, I'm open to other suggestions. > > > If you think it helps, this would be a good addition. > > > >> >> >From an Operational standpoint, the document seems largely appropriate >> in terms >> of dataplane considerations. Some key considerations are explicitly out = of >> scope: >> The method used by the downstream receiving node to advertise SFF >> Labels to the upstream sending node is out of scope of this document. >> >> This really seems to mean that, with the simple definition in this >> Informational document, interoperable implementations cannot yet exist. = If >> there is no mechanism to advertise the SFF Label or to manage the >> semantics of >> this particular label, how will it know? Static configuration, which is >> not >> covered anyway, is not in my humble opinion a manageable scalable >> approach. >> > > Actually, while it is outside the scope of this document, it is within th= e > scope of draft-ietf-bess-nsh-bgp-control-plane, and text is being added t= o > the next revision of that draft to show how it can be used to signal the > encapsulation defined here. This was worked out after this draft was > forwarded to the IESG, but we can now add a reference to that draft seein= g > as we'll be doing a post-last-call update. > > > I think that will help, as an Informative =E2=80=9Cone embodiment=E2=80= =9D type of link. > > > >> >> Title: MPLS Encapsulation For The SFC NSH >> >> RFC 8300 makes an explicit distinction between the terms 'encapsulation' >> and >> 'transport encapsulation' (see e.g., Figure 1, Section 1.5 5., and >> Section 4 of >> RFC 8300). >> >> It seems to me that this is the "MPLS Transport Encapsulation for the SF= C >> NSH" >> > > Thanks, we'll fix that. > > >> >> 2. MPLS Encapsulation Using an SFF Label >> >> Similarly, "2. MPLS Transport Encapsulation Using an SFF Label" >> >> The encapsulation is a standard MPLS label stack [RFC3032] with an >> SFF Label at the bottom of the stack, followed by a NSH as defined by >> [RFC8300] and the NSH payload. >> >> Insteadf of "NSH payload" I think "orignal packet" is meant. >> > > RFC 8300 uses both "payload" and "original packet/frame", but the latter > more than the former. So we can change "payload" to "original packet/fram= e". > > >> >> Also, this encapsulation is Underdefined: What is the value of TTL? TC? >> > > I've been looking back at other related RFCs (such as PW and IP VPN label > definitions) and they're also mostly silent on these values. I did find t= he > following in RFC 6073: > > The setting of the TTL of the PW MPLS > label is a matter of local policy on the originating PE, but SHOULD > be set to 255. > > > Regarding the TC, we can follow the example of RFC 6391: > > This document does not define a use for the Traffic Class (TC) field > [RFC5462 ] (formerly known as the= Experimental Use (EXP) bits > [RFC3032 ]) in the flow label. F= uture documents may define a use for > these bits; therefore, implementations conforming to this > specification MUST set the TC field to zero at the ingress and MUST > ignore them at the egress. > > > Do you have any alternative suggestions? > > > These two approaches sounds good to me. And Ack to the other previous > responses. > > > >> >> Much like a pseudowire label, an SFF Label is allocated by the >> downstream receiver of the NSH from its per-platform label space. >> >> A PW Label is more restrictive. RFC 8077 says it MUST be allocated as >> per-platform: >> >> egress LSR only. Note that the PW label must always be at the bottom >> of the packet's label stack, and labels MUST be allocated from the >> per-platform label space. >> >> Is this the case for the SFF Label as well? If so, what is the >> implication of >> the MUST? If not, why is it different than other equivalent similar >> labels? >> > > We can change the text to: > > Much like a pseudowire label, an SFF Label MUST be allocated by the > downstream receiver of the NSH from its per-platform label space, since t= he > meaning of the label is identical independent of which incoming interface > it is received [RFC3031]. > > > That=E2=80=99s a great improvement. > > >> 2. Push the SFF Label to identify the desired SFF in the receiving >> MPLS node. >> >> TTL value? 1? 2? 255 for GTSM? GTSM RFC 5082 could be used here. >> > > As I noted above, 255, although I used RFC 6073 as my source rather than > 5082. We'll add that here as well. > > > Sounds good. > These protocols use 5082 in one form or another: > https://datatracker.ietf.org/doc/rfc5082/referencedby/ > > >> 4. Operations, Administration, and Maintenance (OAM) Considerations >> >> OAM at the SFC Layer is handled by SFC-defined mechanisms [RFC8300]. >> However, OAM may be required at the MPLS transport layer. If so, >> then standard MPLS-layer OAM mechanisms such as the Generic >> Associated Channel [RFC5586] label may be used. >> >> RFC 5586 is _not_ an OAM mechanism. It is an associated channel creation >> mechanism, over which OAM could be carried. >> >> Thus, what traditional MPLS OAM can be carried here? Things like RFC 437= 9 >> / RFC >> 8029 would need the definition of an SFF Label FEC (which does not exist= ). >> Which other one? IP/ICMP seems of very limited value. >> > > That's a good point about RFC 5586. The intention is that the MPLS OAM > would be at the transport label layer above the SFF label, so most any > MPLS-layer OAM would be applicable. So how about rewording to make that > more clear: > > OAM at the SFC Layer is handled by SFC-defined mechanisms [RFC8300]. > However, OAM may be required at the MPLS transport layer. If so, then > standard MPLS-layer OAM mechanisms may be used at the transport label lay= er > (the labels above the SFF label). > > > Looks good to me, thank you. > > > >> >> 6. Security Considerations >> >> Have you considered the use of GTSM? >> > > No, we hadn't. Can you point me to any examples of GTSM being used in an > MPLS or PW context? > > > Yes, see above. > > > >> >> 8. References >> >> [RFC7665] Halpern, J., Ed. and C. Pignataro, Ed., "Service Function >> Chaining (SFC) Architecture", RFC 7665, >> DOI 10.17487/RFC7665, October 2015, >> . >> >> SHould RFC 7665 be Normative? It defines the "SFF" which is quite centra= l >> to >> understanding this document. >> > > Good point. It was there because 7665 is an Informational RFC, but RFC > 8067 does allow normative references to informational RFCs, so I'll move = it. > > > > Thank you. > > >> Other Nits and Editorials: >> >> SFF Labels are similar to other service labels at the bottom of an >> MPLS label stack that denote the contents of the MPLS payload being >> other than IP, such as a layer 2 pseudowire, an IP packet that is >> routed in a VPN context with a private address, or an Ethernet >> virtual private wire service. >> >> This says "being other than IP, such as IP", which seems to be >> self-contradictory :-) >> >> :-) > > How about we change "other than IP," to "other than a normally routed IP > packet=E2=80=9D, > > > That would disambiguate it. > > Thanks again. > > To me, the control plane / advertisement was the most important > operationally-relevant comment. > > Thanks, > > Carlos. > > > Thanks again, > Andy > > > --0000000000006bfb4005827c65f7 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Carlos,

Looks good on all but one point= - I think I see why you're referencing GTSM,=C2=A0since packets at the= SFC layer would generally be one hop away from each other at that layer. I= s that correct? However, I really don't have sufficient experience with= GTSM to craft specific=C2=A0text. If you think it's important enough t= o include, could you propose some text for me to include?

Thanks again,
Andy


On Thu, Feb 21, 20= 19 at 8:41 PM Carlos Pignataro (cpignata) <cpignata@cisco.com> wrote:
Hi, Andy,

On Feb 21, 2019, at 1:06 PM, Andrew G. Malis <agmalis@gmail.com> wrote:

Carlos,

Many thanks for your review! I'm also including the SFC WG on my r= eply.

Thanks for the quick response, and for considering the comments!

I enjoyed reading this document =E2=80=94 please see below.


Comments inline.

On Wed, Feb 20, 2019 at 10:58 PM Carl= os Pignataro <cp= ignata@cisco.com> wrote:
Reviewer: Carlos Pignataro
Review result: Has Issues

Reviewer: Carlos Pignataro
Review Result: Has Issues

I have reviewed this document as part of the Operational directorate's<= br> ongoing effort to review all IETF documents being processed by the IESG.=C2= =A0 These
comments were written with the intent of improving the operational aspects = of
the IETF drafts. Comments that are not addressed in last call may be includ= ed
in AD reviews during the IESG review.=C2=A0 Document editors and WG chairs = should
treat these comments just like any other last call comments.

This document is highly readable, includes very clear textual descriptions,= and
is very well organized. Easy to read in its simplicity. However, it would benefit from a more explicit connection to the transport encap mechanics fr= om
RFC 8300 (e.g., S4, S6.1). Specifically, I'd recommend adding a Figure = or an
SFF NSH Mapping Table example, to depict and/or exemplify the SFF function.=

I'm trying to envision what would make a good figure here. We coul= d add an additional line to Table 1 of RFC 8300 and reference that table:

      +------=
+------+---------------------+-------------------------+
      | SPI  =
| SI   | Next Hop(s)         | Transport Encapsulation |
      +------+------+---------------------+-------------------------+
      | 25   =
| 220  | Label 5467          | MPLS                    |
      +------=
+------+---------------------+-------------------------+

Is that what you had in mind? If not, I'm open to other suggestion= s.

If you think it helps, this would be a good addition.

=C2=A0

>From an Operational standpoint, the document seems largely appropriate = in terms
of dataplane considerations. Some key considerations are explicitly out of<= br> scope:
=C2=A0 =C2=A0The method used by the downstream receiving node to advertise = SFF
=C2=A0 =C2=A0Labels to the upstream sending node is out of scope of this do= cument.

This really seems to mean that, with the simple definition in this
Informational document, interoperable implementations cannot yet exist. If<= br> there is no mechanism to advertise the SFF Label or to manage the semantics= of
this particular label, how will it know? Static configuration, which is not=
covered anyway, is not in my humble opinion a manageable scalable approach.=

Actually, while it is outside the scope of this document, it is within= the scope of=C2=A0draft-ietf-bess-nsh-bgp-control-plane, and text is being= added to the next revision of that draft to show how it can be used to sig= nal the encapsulation defined here. This was worked out after this draft was forwarded to the IESG, but = we can now add a reference to that draft seeing as we'll be doing a pos= t-last-call update.

I think that will help, as an Informative =E2=80=9Cone embodiment=E2= =80=9D type of link.

=C2=A0

Title: MPLS Encapsulation For The SFC NSH

RFC 8300 makes an explicit distinction between the terms 'encapsulation= ' and
'transport encapsulation' (see e.g., Figure 1, Section 1.5 5., and = Section 4 of
RFC 8300).

It seems to me that this is the "MPLS Transport Encapsulation for the = SFC NSH"

Thanks, we'll fix that.
=C2=A0

2.=C2=A0 MPLS Encapsulation Using an SFF Label

Similarly, "2. MPLS Transport Encapsulation Using an SFF Label"
=C2=A0 =C2=A0The encapsulation is a standard MPLS label stack [RFC3032] wit= h an
=C2=A0 =C2=A0SFF Label at the bottom of the stack, followed by a NSH as def= ined by
=C2=A0 =C2=A0[RFC8300] and the NSH payload.

Insteadf of "NSH payload" I think "orignal packet" is m= eant.

RFC 8300 uses both "payload" and "original packet/frame= ", but the latter more than the former. So we can change "payload= " to "original packet/frame".
=C2=A0

Also, this encapsulation is Underdefined: What is the value of TTL? TC?

I've been looking back at other related RFCs (such as PW and IP VP= N label definitions) and they're also mostly silent on these values. I = did find the following in RFC 6073:

   The settin=
g of the TTL of the PW MPLS
   label is a matter of local policy on the originating PE, but SHOULD
   be set to 255.

Regarding the TC, we can follow the example of RFC 6391:

   This docum=
ent does not define a use for the Traffic Class (TC) field
   [R=
FC5462] (formerly known as the Experimental Use (EXP) bits
   [RFC3032]) in the flow label.=
  Future documents may define a use for
   these bits; therefore, implementations conforming to this
   specification MUST set the TC field to zero at the ingress and MUST
   ignore them at the egress.

Do you have any alternative suggestions?

These two approaches sounds good to me. And Ack to the other previous = responses.

=C2=A0

=C2=A0 =C2=A0Much like a pseudowire label, an SFF Label is allocated by the=
=C2=A0 =C2=A0downstream receiver of the NSH from its per-platform label spa= ce.

A PW Label is more restrictive. RFC 8077 says it MUST be allocated as
per-platform:

=C2=A0 =C2=A0egress LSR only.=C2=A0 Note that the PW label must always be a= t the bottom
=C2=A0 =C2=A0of the packet's label stack, and labels MUST be allocated = from the
=C2=A0 =C2=A0per-platform label space.

Is this the case for the SFF Label as well? If so, what is the implication = of
the MUST? If not, why is it different than other equivalent similar labels?=

We can change the text to:

=C2=A0Much like a pseudowire label, an SFF Label MUST be allocated by = the downstream receiver of the NSH from its per-platform label space, since= the meaning of the label is identical independent of which incoming interf= ace it is received [RFC3031].


That=E2=80=99s a great improvement.


=C2=A0 =C2=A02.=C2=A0 Push the SFF Label to identify the desired SFF in the= receiving
=C2=A0 =C2=A0 =C2=A0 =C2=A0MPLS node.

TTL value? 1? 2? 255 for GTSM? GTSM RFC 5082 could be used here.

As I noted above, 255, although I used RFC 6073 as my source rather th= an 5082. We'll add that here as well.


Sounds good.
These protocols use 5082 in one form or another:=C2=A0https:= //datatracker.ietf.org/doc/rfc5082/referencedby/


4.=C2=A0 Operations, Administration, and Maintenance (OAM) Considerations
=C2=A0 =C2=A0OAM at the SFC Layer is handled by SFC-defined mechanisms [RFC= 8300].
=C2=A0 =C2=A0However, OAM may be required at the MPLS transport layer.=C2= =A0 If so,
=C2=A0 =C2=A0then standard MPLS-layer OAM mechanisms such as the Generic =C2=A0 =C2=A0Associated Channel [RFC5586] label may be used.

RFC 5586 is _not_ an OAM mechanism. It is an associated channel creation mechanism, over which OAM could be carried.

Thus, what traditional MPLS OAM can be carried here? Things like RFC 4379 /= RFC
8029 would need the definition of an SFF Label FEC (which does not exist).<= br> Which other one? IP/ICMP seems of very limited value.

That's a good point about RFC 5586. The intention is that the MPLS= OAM would be at the transport label layer above the SFF label, so most any= MPLS-layer OAM would be applicable. So how about rewording to make that mo= re clear:

OAM at the SFC Layer is handled by SFC-defined mechanisms [RFC8300]. H= owever, OAM may be required at the MPLS transport layer.=C2=A0 If so, then = standard MPLS-layer OAM mechanisms may be used at the transport label layer= (the labels above the SFF label).

Looks good to me, thank you.

=C2=A0

6.=C2=A0 Security Considerations

Have you considered the use of GTSM?

No, we hadn't. Can you point me to any examples of GTSM being used= in an MPLS or PW context?

Yes, see above.

=C2=A0

8.=C2=A0 References

=C2=A0 =C2=A0[RFC7665]=C2=A0 Halpern, J., Ed. and C. Pignataro, Ed., "= Service Function
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Chaining (SFC) Architectur= e", RFC 7665,
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 DOI 10.17487/RFC7665, Octo= ber 2015,
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <https://= www.rfc-editor.org/info/rfc7665>.

SHould RFC 7665 be Normative? It defines the "SFF" which is quite= central to
understanding this document.

Good point. It was there because 7665 is an Informational RFC, but RFC= 8067 does allow normative references to informational RFCs, so I'll mo= ve it.
=C2=A0

Thank you.


Other Nits and Editorials:

=C2=A0 =C2=A0SFF Labels are similar to other service labels at the bottom o= f an
=C2=A0 =C2=A0MPLS label stack that denote the contents of the MPLS payload = being
=C2=A0 =C2=A0other than IP, such as a layer 2 pseudowire, an IP packet that= is
=C2=A0 =C2=A0routed in a VPN context with a private address, or an Ethernet=
=C2=A0 =C2=A0virtual private wire service.

This says "being other than IP, such as IP", which seems to be self-contradictory :-)

:-)

How about we change "other than IP," to "other than a n= ormally routed IP packet=E2=80=9D,

That would disambiguate it.

Thanks again.

To me, the control plane / advertisement was the most important operat= ionally-relevant comment.

Thanks,

Carlos.


Thanks again,
Andy

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Malis" , "Carlos Pignataro (cpignata)" CC: "ops-dir@ietf.org" , mpls , "draft-ietf-mpls-sfc-encapsulation.all@ietf.org" , IETF Discussion , "sfc@ietf.org" Thread-Topic: [mpls] Opsdir last call review of draft-ietf-mpls-sfc-encapsulation-02 Thread-Index: AQHUyZmooeeOlrGJcEi/lzVg6owG5qXqjRuAgAB/QwCAANX3gIAAE8pQ Date: Fri, 22 Feb 2019 15:39:44 +0000 Message-ID: References: <155072147698.20210.381511429964485828@ietfa.amsl.com> <6A97863A-DD90-4D62-9607-569386F5F850@cisco.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: yes X-MS-TNEF-Correlator: authentication-results: spf=none (sender IP is ) smtp.mailfrom=joel.halpern@ericsson.com; x-originating-ip: [209.255.163.147] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 2d989364-92ae-43ff-1f80-08d698dbf864 x-microsoft-antispam: BCL:0; PCL:0; RULEID:(2390118)(7020095)(4652040)(8989299)(5600110)(711020)(4605104)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(2017052603328)(7153060)(49563074)(7193020); 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protocol="application/x-pkcs7-signature"; micalg=SHA1; boundary="----=_NextPart_000_0128_01D4CA9A.EBF1E560" MIME-Version: 1.0 X-MS-Exchange-CrossTenant-Network-Message-Id: 2d989364-92ae-43ff-1f80-08d698dbf864 X-MS-Exchange-CrossTenant-originalarrivaltime: 22 Feb 2019 15:39:44.9722 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 92e84ceb-fbfd-47ab-be52-080c6b87953f X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN6PR15MB1203 X-OriginatorOrg: ericsson.com X-Brightmail-Tracker: H4sIAAAAAAAAA2WSfUhTURjGO/fe3V2txXFNfbP6o6kUVrNPGPRBRYQElpVZ5NBWXky0Kfda ZBCJtUrLUjPBhfODTcsyXCR+YIkri7YyS8o0S+dmTRJD6UuN1bY7Iei/3/s+z3ne8x4OQ0pz 6RAmRZPJchp1mpz2p0oPNPIrOoIzVCtd+lCl9bOFVk6MNVHKZrMRKT+Zyilln/GWSJmfYyCV jsEG8WZxVPG0SRTVrPsgjjIYJokY8qD/hiQ2LeUEy0VuOuR/9HxpF5ExpSVPGs9V09nobC+R h/wYwGuhpqRFlIf8GSl+jKCyY5AWih8I9NZRJBQGAvQ3r4g9BYULSDBd6CYFpZiAkWGHL2AI wUfbRZEnmcYKqPtqd09hGBlOhLeGRI+HxE4ETws7KY9nHt4HZVY96WEZjoNrdzsIgbfD4/O9 Xg+Fw8HuGvN6JFgFI7+bKGHYWQJ6c0toj+CHd8P11kfewwgHwU/LHS+TOBj6HOW+VWVge2Wl BQ6EEbtLJPhVkNPeJxL6oWCrLSAFXgSvyy8hgaPBUqInPIMB2xEUvTT4giLgwfNSsSAMzIOi snxfUiqUfZ3y8UIoybHSgqmehrYbw95YKWahpk6LCtBy3T+31XnfqRBB7tOXlM67dwA8K3W4 mXEL8WDqzxL8yyDfpkUzXF35hRQ4Al686RH/398ITsuAr78Yii/ZfLwOvnSMowo0uxYF8ix/ +Fjy6jUKlks5wvPpGoWGzbyH3J+y/f50eBPqHt1iRphB8jmSBlmGSipSn+CzjplRmDtnqP52 FwqhNOkaVi6TPHGlq6SSJHXWKZZLT+SOp7G8GS1gKHmw5Lc0QCXFyepMNpVlM1huRiUYv5Bs lLkucXhzUUJ8/2RP7LZl86t+hR/nJk3JDxMuR8ZUDM/dWrV+T/PPvbMetLYFHLo6PkQHBoUa VzgVylRVoVEmaVE4LQHvtkZ/02gb2/+0OIKeu3S271FnRmM7K9/vSEo4XZ5lnBtXtf8UVx3c ltdvn1rSYC4Im8hvW+oUdckmtLt2yin+qHpVBMnx6r+UhOBonAMAAA== Archived-At: Subject: Re: [mpls] Opsdir last call review of draft-ietf-mpls-sfc-encapsulation-02 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 22 Feb 2019 15:39:56 -0000 ------=_NextPart_000_0128_01D4CA9A.EBF1E560 Content-Type: multipart/alternative; boundary="----=_NextPart_001_0129_01D4CA9A.EBF1E560" ------=_NextPart_001_0129_01D4CA9A.EBF1E560 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable More generally, I do not think there is a requirement that SFF be only = one MPLS-hop apart. So I tend to doubt whether a reference to GTSM will = be helpful. Maybe I am missing the applicability? Yours, Joel =20 From: Andrew G. Malis =20 Sent: Friday, February 22, 2019 9:28 AM To: Carlos Pignataro (cpignata) Cc: ops-dir@ietf.org; mpls ; = draft-ietf-mpls-sfc-encapsulation.all@ietf.org; IETF Discussion = ; sfc@ietf.org Subject: Re: [mpls] Opsdir last call review of = draft-ietf-mpls-sfc-encapsulation-02 =20 Carlos, =20 Looks good on all but one point - I think I see why you're referencing = GTSM, since packets at the SFC layer would generally be one hop away = from each other at that layer. Is that correct? However, I really don't = have sufficient experience with GTSM to craft specific text. If you = think it's important enough to include, could you propose some text for = me to include? =20 Thanks again, Andy =20 =20 On Thu, Feb 21, 2019 at 8:41 PM Carlos Pignataro (cpignata) = > wrote: Hi, Andy,=20 =20 On Feb 21, 2019, at 1:06 PM, Andrew G. Malis > wrote: =20 Carlos, =20 Many thanks for your review! I'm also including the SFC WG on my reply. =20 Thanks for the quick response, and for considering the comments! =20 I enjoyed reading this document =E2=80=94 please see below. =20 Comments inline. =20 On Wed, Feb 20, 2019 at 10:58 PM Carlos Pignataro > wrote: Reviewer: Carlos Pignataro Review result: Has Issues Reviewer: Carlos Pignataro Review Result: Has Issues I have reviewed this document as part of the Operational directorate's ongoing effort to review all IETF documents being processed by the IESG. = These comments were written with the intent of improving the operational = aspects of the IETF drafts. Comments that are not addressed in last call may be = included in AD reviews during the IESG review. Document editors and WG chairs = should treat these comments just like any other last call comments. This document is highly readable, includes very clear textual = descriptions, and is very well organized. Easy to read in its simplicity. However, it = would benefit from a more explicit connection to the transport encap mechanics = from RFC 8300 (e.g., S4, S6.1). Specifically, I'd recommend adding a Figure = or an SFF NSH Mapping Table example, to depict and/or exemplify the SFF = function. =20 I'm trying to envision what would make a good figure here. We could add = an additional line to Table 1 of RFC 8300 and reference that table: =20 +------+------+---------------------+-------------------------+ | SPI | SI | Next Hop(s) | Transport Encapsulation | +------+------+---------------------+-------------------------+ | 25 | 220 | Label 5467 | MPLS | +------+------+---------------------+-------------------------+ =20 Is that what you had in mind? If not, I'm open to other suggestions. =20 If you think it helps, this would be a good addition. =20 >From an Operational standpoint, the document seems largely appropriate = in terms of dataplane considerations. Some key considerations are explicitly out = of scope: The method used by the downstream receiving node to advertise SFF Labels to the upstream sending node is out of scope of this document. This really seems to mean that, with the simple definition in this Informational document, interoperable implementations cannot yet exist. = If there is no mechanism to advertise the SFF Label or to manage the = semantics of this particular label, how will it know? Static configuration, which is = not covered anyway, is not in my humble opinion a manageable scalable = approach. =20 Actually, while it is outside the scope of this document, it is within = the scope of draft-ietf-bess-nsh-bgp-control-plane, and text is being = added to the next revision of that draft to show how it can be used to = signal the encapsulation defined here. This was worked out after this = draft was forwarded to the IESG, but we can now add a reference to that = draft seeing as we'll be doing a post-last-call update. =20 I think that will help, as an Informative =E2=80=9Cone = embodiment=E2=80=9D type of link. =20 Title: MPLS Encapsulation For The SFC NSH RFC 8300 makes an explicit distinction between the terms 'encapsulation' = and 'transport encapsulation' (see e.g., Figure 1, Section 1.5 5., and = Section 4 of RFC 8300). It seems to me that this is the "MPLS Transport Encapsulation for the = SFC NSH" =20 Thanks, we'll fix that. =20 2. MPLS Encapsulation Using an SFF Label Similarly, "2. MPLS Transport Encapsulation Using an SFF Label" The encapsulation is a standard MPLS label stack [RFC3032] with an SFF Label at the bottom of the stack, followed by a NSH as defined by [RFC8300] and the NSH payload. Insteadf of "NSH payload" I think "orignal packet" is meant. =20 RFC 8300 uses both "payload" and "original packet/frame", but the latter = more than the former. So we can change "payload" to "original = packet/frame". =20 Also, this encapsulation is Underdefined: What is the value of TTL? TC? =20 I've been looking back at other related RFCs (such as PW and IP VPN = label definitions) and they're also mostly silent on these values. I did = find the following in RFC 6073: =20 The setting of the TTL of the PW MPLS label is a matter of local policy on the originating PE, but SHOULD be set to 255. =20 Regarding the TC, we can follow the example of RFC 6391: =20 This document does not define a use for the Traffic Class (TC) field [RFC5462 ] (formerly known as = the Experimental Use (EXP) bits [RFC3032 ]) in the flow label. = Future documents may define a use for these bits; therefore, implementations conforming to this specification MUST set the TC field to zero at the ingress and MUST ignore them at the egress. =20 Do you have any alternative suggestions? =20 These two approaches sounds good to me. And Ack to the other previous = responses. =20 Much like a pseudowire label, an SFF Label is allocated by the downstream receiver of the NSH from its per-platform label space. A PW Label is more restrictive. RFC 8077 says it MUST be allocated as per-platform: egress LSR only. Note that the PW label must always be at the bottom of the packet's label stack, and labels MUST be allocated from the per-platform label space. Is this the case for the SFF Label as well? If so, what is the = implication of the MUST? If not, why is it different than other equivalent similar = labels? =20 We can change the text to: =20 Much like a pseudowire label, an SFF Label MUST be allocated by the = downstream receiver of the NSH from its per-platform label space, since = the meaning of the label is identical independent of which incoming = interface it is received [RFC3031]. =20 =20 That=E2=80=99s a great improvement. 2. Push the SFF Label to identify the desired SFF in the receiving MPLS node. TTL value? 1? 2? 255 for GTSM? GTSM RFC 5082 could be used here. =20 As I noted above, 255, although I used RFC 6073 as my source rather than = 5082. We'll add that here as well. =20 =20 Sounds good. These protocols use 5082 in one form or another: = https://datatracker.ietf.org/doc/rfc5082/referencedby/ 4. Operations, Administration, and Maintenance (OAM) Considerations OAM at the SFC Layer is handled by SFC-defined mechanisms [RFC8300]. However, OAM may be required at the MPLS transport layer. If so, then standard MPLS-layer OAM mechanisms such as the Generic Associated Channel [RFC5586] label may be used. RFC 5586 is _not_ an OAM mechanism. It is an associated channel creation mechanism, over which OAM could be carried. Thus, what traditional MPLS OAM can be carried here? Things like RFC = 4379 / RFC 8029 would need the definition of an SFF Label FEC (which does not = exist). Which other one? IP/ICMP seems of very limited value. =20 That's a good point about RFC 5586. The intention is that the MPLS OAM = would be at the transport label layer above the SFF label, so most any = MPLS-layer OAM would be applicable. So how about rewording to make that = more clear: =20 OAM at the SFC Layer is handled by SFC-defined mechanisms [RFC8300]. = However, OAM may be required at the MPLS transport layer. If so, then = standard MPLS-layer OAM mechanisms may be used at the transport label = layer (the labels above the SFF label). =20 Looks good to me, thank you. =20 6. Security Considerations Have you considered the use of GTSM? =20 No, we hadn't. Can you point me to any examples of GTSM being used in an = MPLS or PW context? =20 Yes, see above. =20 8. References [RFC7665] Halpern, J., Ed. and C. Pignataro, Ed., "Service Function Chaining (SFC) Architecture", RFC 7665, DOI 10.17487/RFC7665, October 2015, . SHould RFC 7665 be Normative? It defines the "SFF" which is quite = central to understanding this document. =20 Good point. It was there because 7665 is an Informational RFC, but RFC = 8067 does allow normative references to informational RFCs, so I'll move = it. =20 =20 Thank you. Other Nits and Editorials: SFF Labels are similar to other service labels at the bottom of an MPLS label stack that denote the contents of the MPLS payload being other than IP, such as a layer 2 pseudowire, an IP packet that is routed in a VPN context with a private address, or an Ethernet virtual private wire service. This says "being other than IP, such as IP", which seems to be self-contradictory :-) :-) =20 How about we change "other than IP," to "other than a normally routed IP = packet=E2=80=9D, =20 That would disambiguate it. =20 Thanks again. =20 To me, the control plane / advertisement was the most important = operationally-relevant comment. =20 Thanks, =20 Carlos. =20 Thanks again, Andy =20 ------=_NextPart_001_0129_01D4CA9A.EBF1E560 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

More = generally, I do not think there is a requirement that SFF be only one = MPLS-hop apart.=C2=A0 So I tend to doubt whether a reference to GTSM = will be helpful. =C2=A0=C2=A0Maybe I am missing the = applicability?

Yours,

Joel

 

From: = Andrew G. Malis <agmalis@gmail.com>
Sent: Friday, = February 22, 2019 9:28 AM
To: Carlos Pignataro (cpignata) = <cpignata@cisco.com>
Cc: ops-dir@ietf.org; mpls = <mpls@ietf.org>; draft-ietf-mpls-sfc-encapsulation.all@ietf.org; = IETF Discussion <ietf@ietf.org>; sfc@ietf.org
Subject: = Re: [mpls] Opsdir last call review of = draft-ietf-mpls-sfc-encapsulation-02

 

Carlos,

 

Looks good on all but one point - I think I see why = you're referencing GTSM, since packets at the SFC layer would = generally be one hop away from each other at that layer. Is that = correct? However, I really don't have sufficient experience with GTSM to = craft specific text. If you think it's important enough to include, = could you propose some text for me to = include?

 

Thanks again,

Andy

 

 

On = Thu, Feb 21, 2019 at 8:41 PM Carlos Pignataro (cpignata) <cpignata@cisco.com> = wrote:

Hi, = Andy,

 

On Feb 21, 2019, at 1:06 PM, Andrew G. Malis <agmalis@gmail.com> = wrote:

 

Carlos,=

 <= /o:p>

Many thanks = for your review! I'm also including the SFC WG on my = reply.

 

Thanks for the quick response, and for considering the = comments!

 

I = enjoyed reading this document =E2=80=94 please see = below.



 <= /o:p>

Comments = inline.

 <= /o:p>

On Wed, Feb = 20, 2019 at 10:58 PM Carlos Pignataro <cpignata@cisco.com> = wrote:

Reviewer: = Carlos Pignataro
Review result: Has Issues

Reviewer: Carlos = Pignataro
Review Result: Has Issues

I have reviewed this = document as part of the Operational directorate's
ongoing effort to = review all IETF documents being processed by the IESG.  = These
comments were written with the intent of improving the = operational aspects of
the IETF drafts. Comments that are not = addressed in last call may be included
in AD reviews during the IESG = review.  Document editors and WG chairs should
treat these = comments just like any other last call comments.

This document is = highly readable, includes very clear textual descriptions, and
is = very well organized. Easy to read in its simplicity. However, it = would
benefit from a more explicit connection to the transport encap = mechanics from
RFC 8300 (e.g., S4, S6.1). Specifically, I'd recommend = adding a Figure or an
SFF NSH Mapping Table example, to depict and/or = exemplify the SFF function.

 <= /o:p>

I'm trying = to envision what would make a good figure here. We could add an = additional line to Table 1 of RFC 8300 and reference that = table:

 <= /o:p>

=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =
+------+------+---------------------+-------------------------+
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 | =
SPI=C2=A0 | SI=C2=A0=C2=A0 | Next =
Hop(s)=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 | Transport =
Encapsulation |
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =
+------+------+---------------------+-------------------------+
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 | =
25=C2=A0=C2=A0 | 220=C2=A0 | Label =
5467=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 | =
MPLS=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 |
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =
+------+------+---------------------+-------------------------+

 <= /o:p>

Is that = what you had in mind? If not, I'm open to other = suggestions.

 

If you think it helps, this would be a good = addition.



<= p class=3DMsoNormal> <= /o:p>


>From= an Operational standpoint, the document seems largely appropriate in = terms
of dataplane considerations. Some key considerations are = explicitly out of
scope:
   The method used by the = downstream receiving node to advertise SFF
   Labels to the = upstream sending node is out of scope of this document.

This = really seems to mean that, with the simple definition in = this
Informational document, interoperable implementations cannot yet = exist. If
there is no mechanism to advertise the SFF Label or to = manage the semantics of
this particular label, how will it know? = Static configuration, which is not
covered anyway, is not in my = humble opinion a manageable scalable = approach.

 <= /o:p>

Actually, = while it is outside the scope of this document, it is within the scope = of draft-ietf-bess-nsh-bgp-control-plane, and text is being added = to the next revision of that draft to show how it can be used to signal = the encapsulation defined here. This was worked out after this draft was = forwarded to the IESG, but we can now add a reference to that draft = seeing as we'll be doing a post-last-call = update.

<= div>

 

I think that will help, as an Informative =E2=80=9Cone = embodiment=E2=80=9D type of link.



<= p class=3DMsoNormal> <= /o:p>


Title: = MPLS Encapsulation For The SFC NSH

RFC 8300 makes an explicit = distinction between the terms 'encapsulation' and
'transport = encapsulation' (see e.g., Figure 1, Section 1.5 5., and Section 4 = of
RFC 8300).

It seems to me that this is the "MPLS = Transport Encapsulation for the SFC = NSH"

 <= /o:p>

Thanks, = we'll fix that.

 <= /o:p>


2. = MPLS Encapsulation Using an SFF Label

Similarly, "2. MPLS = Transport Encapsulation Using an SFF Label"

   The = encapsulation is a standard MPLS label stack [RFC3032] with an
  =  SFF Label at the bottom of the stack, followed by a NSH as defined = by
   [RFC8300] and the NSH payload.

Insteadf of = "NSH payload" I think "orignal packet" is = meant.

 <= /o:p>

RFC 8300 = uses both "payload" and "original packet/frame", but = the latter more than the former. So we can change "payload" to = "original packet/frame".

 <= /o:p>


Also, = this encapsulation is Underdefined: What is the value of TTL? = TC?

 <= /o:p>

I've been = looking back at other related RFCs (such as PW and IP VPN label = definitions) and they're also mostly silent on these values. I did find = the following in RFC 6073:

 <= /o:p>

=C2=A0=C2=A0 =
The setting of the TTL of the PW MPLS
=C2=A0=C2=A0 =
label is a matter of local policy on the originating PE, but =
SHOULD
=C2=A0=C2=A0 be set to =
255.

 <= /o:p>

Regarding = the TC, we can follow the example of RFC = 6391:

 <= /o:p>

=C2=A0=C2=A0 =
This document does not define a use for the Traffic Class (TC) =
field
=C2=A0=C2=A0 [RFC5462] (formerly known as the Experimental Use (EXP) =
bits
=C2=A0=C2=A0 [RFC3032]) in the =
flow label.=C2=A0 Future documents may define a use =
for
=C2=A0=C2=A0 these bits; therefore, =
implementations conforming to this
=C2=A0=C2=A0 =
specification MUST set the TC field to zero at the ingress and =
MUST
=C2=A0=C2=A0 ignore them at the =
egress.

 <= /o:p>

Do you have = any alternative = suggestions?

 

These two approaches sounds good to me. And Ack to the = other previous responses.



<= p class=3DMsoNormal> <= /o:p>


  =  Much like a pseudowire label, an SFF Label is allocated by = the
   downstream receiver of the NSH from its per-platform = label space.

A PW Label is more restrictive. RFC 8077 says it = MUST be allocated as
per-platform:

   egress LSR = only.  Note that the PW label must always be at the = bottom
   of the packet's label stack, and labels MUST be = allocated from the
   per-platform label space.

Is = this the case for the SFF Label as well? If so, what is the implication = of
the MUST? If not, why is it different than other equivalent = similar labels?

 <= /o:p>

We can = change the text to:

 <= /o:p>

 Much = like a pseudowire label, an SFF Label MUST be allocated by the = downstream receiver of the NSH from its per-platform label space, since = the meaning of the label is identical independent of which incoming = interface it is received [RFC3031].

 <= /o:p>

 

That=E2=80=99s a great = improvement.




  =  2.  Push the SFF Label to identify the desired SFF in the = receiving
       MPLS node.

TTL value? 1? = 2? 255 for GTSM? GTSM RFC 5082 could be used = here.

 <= /o:p>

As I noted = above, 255, although I used RFC 6073 as my source rather than 5082. = We'll add that here as well.

 <= /o:p>

 

Sounds good.

These protocols use 5082 in one form or = another: https://datatracker.ietf.org/doc/rfc5082/referencedby/<= /a>



<= div>

 

Looks good to me, thank = you.




8. = References

   [RFC7665]  Halpern, J., Ed. and C. = Pignataro, Ed., "Service Function
        =       Chaining (SFC) Architecture", RFC = 7665,
              DOI = 10.17487/RFC7665, October 2015,
          =     <
https://www.rfc-editor.org/info/rfc7665>.
SHould RFC 7665 be Normative? It defines the "SFF" which is = quite central to
understanding this = document.

 <= /o:p>

Good point. = It was there because 7665 is an Informational RFC, but RFC 8067 does = allow normative references to informational RFCs, so I'll move = it.

 <= /o:p>

 

Thank = you.




Other = Nits and Editorials:

   SFF Labels are similar to other = service labels at the bottom of an
   MPLS label stack that = denote the contents of the MPLS payload being
   other than = IP, such as a layer 2 pseudowire, an IP packet that is
  =  routed in a VPN context with a private address, or an = Ethernet
   virtual private wire service.

This says = "being other than IP, such as IP", which seems to = be
self-contradictory :-)

:-)

 <= /o:p>

How about = we change "other than IP," to "other than a normally = routed IP = packet=E2=80=9D,

 

That would disambiguate = it.

 

Thanks again.

 

To me, the control plane / advertisement was the most = important operationally-relevant comment.

 

Thanks,

 

Carlos.



<= p class=3DMsoNormal> <= /o:p>

Thanks = again,

Andy

 

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Malis" , "Carlos Pignataro (cpignata)" Cc: mpls , "ops-dir@ietf.org" , "draft-ietf-mpls-sfc-encapsulation.all@ietf.org" , IETF Discussion , "sfc@ietf.org" References: <155072147698.20210.381511429964485828@ietfa.amsl.com> <6A97863A-DD90-4D62-9607-569386F5F850@cisco.com> From: "Joel M. Halpern" Message-ID: <03769b15-8375-a23a-a882-0a183056a8b5@joelhalpern.com> Date: Fri, 22 Feb 2019 11:43:36 -0500 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:60.0) Gecko/20100101 Thunderbird/60.5.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit Archived-At: Subject: Re: [mpls] Opsdir last call review of draft-ietf-mpls-sfc-encapsulation-02 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 22 Feb 2019 16:43:44 -0000 My comment on this may not have made it to everyone. If you receive a duplicate, I apologize (I received DMARC errors from something about translations from the draft.all address to gmail addresses.) Speaking as a co-author... It is not at all clear to me that GTSM applies or how it would apply. There is no requirement that successive SFF be one MPLS hop apart. Yours, Joel On 2/22/19 9:27 AM, Andrew G. Malis wrote: > Carlos, > > Looks good on all but one point - I think I see why you're referencing > GTSM, since packets at the SFC layer would generally be one hop away > from each other at that layer. Is that correct? However, I really don't > have sufficient experience with GTSM to craft specific text. If you > think it's important enough to include, could you propose some text for > me to include? > > Thanks again, > Andy > > > On Thu, Feb 21, 2019 at 8:41 PM Carlos Pignataro (cpignata) > > wrote: > > Hi, Andy, > >> On Feb 21, 2019, at 1:06 PM, Andrew G. Malis > > wrote: >> >> Carlos, >> >> Many thanks for your review! I'm also including the SFC WG on my >> reply. > > Thanks for the quick response, and for considering the comments! > > I enjoyed reading this document — please see below. > >> >> Comments inline. >> >> On Wed, Feb 20, 2019 at 10:58 PM Carlos Pignataro >> > wrote: >> >> Reviewer: Carlos Pignataro >> Review result: Has Issues >> >> Reviewer: Carlos Pignataro >> Review Result: Has Issues >> >> I have reviewed this document as part of the Operational >> directorate's >> ongoing effort to review all IETF documents being processed by >> the IESG.  These >> comments were written with the intent of improving the >> operational aspects of >> the IETF drafts. Comments that are not addressed in last call >> may be included >> in AD reviews during the IESG review.  Document editors and WG >> chairs should >> treat these comments just like any other last call comments. >> >> This document is highly readable, includes very clear textual >> descriptions, and >> is very well organized. Easy to read in its simplicity. >> However, it would >> benefit from a more explicit connection to the transport encap >> mechanics from >> RFC 8300 (e.g., S4, S6.1). Specifically, I'd recommend adding >> a Figure or an >> SFF NSH Mapping Table example, to depict and/or exemplify the >> SFF function. >> >> >> I'm trying to envision what would make a good figure here. We >> could add an additional line to Table 1 of RFC 8300 and reference >> that table: >> >> +------+------+---------------------+-------------------------+ >> | SPI | SI | Next Hop(s) | Transport Encapsulation | >> +------+------+---------------------+-------------------------+ >> | 25 | 220 | Label 5467 | MPLS | >> +------+------+---------------------+-------------------------+ >> >> Is that what you had in mind? If not, I'm open to other suggestions. > > If you think it helps, this would be a good addition. > >> >> >From an Operational standpoint, the document seems largely >> appropriate in terms >> of dataplane considerations. Some key considerations are >> explicitly out of >> scope: >>    The method used by the downstream receiving node to >> advertise SFF >>    Labels to the upstream sending node is out of scope of this >> document. >> >> This really seems to mean that, with the simple definition in this >> Informational document, interoperable implementations cannot >> yet exist. If >> there is no mechanism to advertise the SFF Label or to manage >> the semantics of >> this particular label, how will it know? Static configuration, >> which is not >> covered anyway, is not in my humble opinion a manageable >> scalable approach. >> >> >> Actually, while it is outside the scope of this document, it is >> within the scope of draft-ietf-bess-nsh-bgp-control-plane, and >> text is being added to the next revision of that draft to show how >> it can be used to signal the encapsulation defined here. This was >> worked out after this draft was forwarded to the IESG, but we can >> now add a reference to that draft seeing as we'll be doing a >> post-last-call update. > > I think that will help, as an Informative “one embodiment” type of link. > >> >> Title: MPLS Encapsulation For The SFC NSH >> >> RFC 8300 makes an explicit distinction between the terms >> 'encapsulation' and >> 'transport encapsulation' (see e.g., Figure 1, Section 1.5 5., >> and Section 4 of >> RFC 8300). >> >> It seems to me that this is the "MPLS Transport Encapsulation >> for the SFC NSH" >> >> >> Thanks, we'll fix that. >> >> >> 2.  MPLS Encapsulation Using an SFF Label >> >> Similarly, "2. MPLS Transport Encapsulation Using an SFF Label" >> >>    The encapsulation is a standard MPLS label stack [RFC3032] >> with an >>    SFF Label at the bottom of the stack, followed by a NSH as >> defined by >>    [RFC8300] and the NSH payload. >> >> Insteadf of "NSH payload" I think "orignal packet" is meant. >> >> >> RFC 8300 uses both "payload" and "original packet/frame", but the >> latter more than the former. So we can change "payload" to >> "original packet/frame". >> >> >> Also, this encapsulation is Underdefined: What is the value of >> TTL? TC? >> >> >> I've been looking back at other related RFCs (such as PW and IP >> VPN label definitions) and they're also mostly silent on these >> values. I did find the following in RFC 6073: >> >> The setting of the TTL of the PW MPLS >> label is a matter of local policy on the originating PE, but SHOULD >> be set to 255. >> >> Regarding the TC, we can follow the example of RFC 6391: >> >> This document does not define a use for the Traffic Class (TC) field >> [RFC5462 ] (formerly known as the Experimental Use (EXP) bits >> [RFC3032 ]) in the flow label. Future documents may define a use for >> these bits; therefore, implementations conforming to this >> specification MUST set the TC field to zero at the ingress and MUST >> ignore them at the egress. >> >> Do you have any alternative suggestions? > > These two approaches sounds good to me. And Ack to the other > previous responses. > >> >>    Much like a pseudowire label, an SFF Label is allocated by the >>    downstream receiver of the NSH from its per-platform label >> space. >> >> A PW Label is more restrictive. RFC 8077 says it MUST be >> allocated as >> per-platform: >> >>    egress LSR only.  Note that the PW label must always be at >> the bottom >>    of the packet's label stack, and labels MUST be allocated >> from the >>    per-platform label space. >> >> Is this the case for the SFF Label as well? If so, what is the >> implication of >> the MUST? If not, why is it different than other equivalent >> similar labels? >> >> >> We can change the text to: >> >>  Much like a pseudowire label, an SFF Label MUST be allocated by >> the downstream receiver of the NSH from its per-platform label >> space, since the meaning of the label is identical independent of >> which incoming interface it is received [RFC3031]. >> > > That’s a great improvement. > >> >>    2.  Push the SFF Label to identify the desired SFF in the >> receiving >>        MPLS node. >> >> TTL value? 1? 2? 255 for GTSM? GTSM RFC 5082 could be used here. >> >> >> As I noted above, 255, although I used RFC 6073 as my source >> rather than 5082. We'll add that here as well. >> > > Sounds good. > These protocols use 5082 in one form or another: > https://datatracker.ietf.org/doc/rfc5082/referencedby/ > >> >> 4.  Operations, Administration, and Maintenance (OAM) >> Considerations >> >>    OAM at the SFC Layer is handled by SFC-defined mechanisms >> [RFC8300]. >>    However, OAM may be required at the MPLS transport layer. >> If so, >>    then standard MPLS-layer OAM mechanisms such as the Generic >>    Associated Channel [RFC5586] label may be used. >> >> RFC 5586 is _not_ an OAM mechanism. It is an associated >> channel creation >> mechanism, over which OAM could be carried. >> >> Thus, what traditional MPLS OAM can be carried here? Things >> like RFC 4379 / RFC >> 8029 would need the definition of an SFF Label FEC (which does >> not exist). >> Which other one? IP/ICMP seems of very limited value. >> >> >> That's a good point about RFC 5586. The intention is that the MPLS >> OAM would be at the transport label layer above the SFF label, so >> most any MPLS-layer OAM would be applicable. So how about >> rewording to make that more clear: >> >> OAM at the SFC Layer is handled by SFC-defined mechanisms >> [RFC8300]. However, OAM may be required at the MPLS transport >> layer.  If so, then standard MPLS-layer OAM mechanisms may be used >> at the transport label layer (the labels above the SFF label). > > Looks good to me, thank you. > >> >> >> 6.  Security Considerations >> >> Have you considered the use of GTSM? >> >> >> No, we hadn't. Can you point me to any examples of GTSM being used >> in an MPLS or PW context? > > Yes, see above. > >> >> 8.  References >> >>    [RFC7665]  Halpern, J., Ed. and C. Pignataro, Ed., "Service >> Function >>               Chaining (SFC) Architecture", RFC 7665, >>               DOI 10.17487/RFC7665, October 2015, >>               > >. >> >> SHould RFC 7665 be Normative? It defines the "SFF" which is >> quite central to >> understanding this document. >> >> >> Good point. It was there because 7665 is an Informational RFC, but >> RFC 8067 does allow normative references to informational RFCs, so >> I'll move it. > > Thank you. > >> >> Other Nits and Editorials: >> >>    SFF Labels are similar to other service labels at the >> bottom of an >>    MPLS label stack that denote the contents of the MPLS >> payload being >>    other than IP, such as a layer 2 pseudowire, an IP packet >> that is >>    routed in a VPN context with a private address, or an Ethernet >>    virtual private wire service. >> >> This says "being other than IP, such as IP", which seems to be >> self-contradictory :-) >> >> :-) >> >> How about we change "other than IP," to "other than a normally >> routed IP packet”, > > That would disambiguate it. > > Thanks again. > > To me, the control plane / advertisement was the most important > operationally-relevant comment. > > Thanks, > > Carlos. > >> >> Thanks again, >> Andy > From nobody Fri Feb 22 09:19:21 2019 Return-Path: X-Original-To: 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bh=9Ef8uLW3ZLsLWHBuz0f68IRLAEaO+akIaI7uIifOi7M=; b=q0llbonRwf9+fchp+MqkofazIKnGQuHYT8Ve5kFXb9WaluopPb7ioa/IoiRmNTioMU CiHT3UuhH39jTM1JNetN1Tl8pJcisbSYOjNFbF2L0q3pOUAprbIhuknOwnSSYQX34/Yl GnLgF/d3BJ9jQbvCMjFbc/wQJkXpfQRzfCwy5uRdqy1WbfJAqjuc/5WLtJYp6BdpvJif uCoQSIZNgRCiGchifLXTtzVDPjXvjo+Q7AW3hUh/eAR75PduEgcLUKw1a86JHyJq/Uoc jcJlVYvy2NB3WkurzERNKMrRk8cEltqhEDOV4ncBm7Y6SDtBB5EIPOr4H81si/f0/BBQ cPQw== X-Gm-Message-State: AHQUAuZdhhIfp3D219N2r6mnRxTPaNuqTeRB8jfXjo//y0s9cXYM6SAF gvPkpgMnp/OYU57c4nwOP0BDqC+ZOYvPm4dbvQ== X-Google-Smtp-Source: AHgI3IZZ5bPM37JNUQl/eoaR12g+KEfGOIs52cSfz8d+Z03qcJl3H551/qYLqFtnrjJuLG0Mw1ksBpqF/RKAw7DEyiA= X-Received: by 2002:a37:c442:: with SMTP id h2mr4932918qkm.53.1550885112590; Fri, 22 Feb 2019 17:25:12 -0800 (PST) MIME-Version: 1.0 References: <0980ce7c-047c-519f-e7d5-98d32b498482@pi.nu> <9419b7d7-87ef-151f-5ed8-b0f78c6e83af@gmail.com> <050301d4c590$445f5d50$cd1e17f0$@com> In-Reply-To: From: Rakesh Gandhi Date: Fri, 22 Feb 2019 20:25:00 -0500 Message-ID: To: Greg Mirsky Cc: Weiqiang Cheng , mpls@ietf.org, spring , Alexander Vainshtein , draft-cheng-spring-mpls-path-segment@ietf.org, Stewart Bryant , Loa Andersson Content-Type: multipart/alternative; boundary="00000000000039367b058285947d" Archived-At: Subject: Re: [mpls] [spring] to progress draft-cheng-spring-mpls-path-segment X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 23 Feb 2019 01:25:18 -0000 --00000000000039367b058285947d Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Greg, I am not sure if the question has been answered. I would think GAL is at the bottom of the label stack. Thanks, Rakesh On Sat, Feb 16, 2019 at 4:24 PM Greg Mirsky wrote: > Hi Weiqiang Cheng, > thank you for your expedient response to my questions. The document state= s > that one of the use cases for the Path segment is to be used as a > performance, packet loss and/or delay, measurement session identifier. I > think that RFC 6374 is the most suitable for PM OAM in SR-MPLS environmen= t. > Of course, the type of the encapsulated message can be identified using t= he > destination UDP port number with IP/UDP encapsulation. But another option > is to use G-ACh encapsulation. That would require the use of GAL. And tha= t > is how I've arrived at my original question (I should have explained it > better, my apologies): > > How the Path segment and GAL are placed relative to each other in the > SR-MPLS label stack? > > Regards, > Greg > > On Fri, Feb 15, 2019 at 4:40 PM Weiqiang Cheng < > chengweiqiang@chinamobile.com> wrote: > >> Hi Greg, >> >> Thanks a lot for your comments. >> >> My comments are in-line. >> >> >> >> B.R. >> >> Weiqiang Cheng >> >> >> >> *=E5=8F=91=E4=BB=B6=E4=BA=BA:* Greg Mirsky [mailto:gregimirsky@gmail.com= ] >> *=E5=8F=91=E9=80=81=E6=97=B6=E9=97=B4:* 2019=E5=B9=B42=E6=9C=8815=E6=97= =A5 3:37 >> *=E6=94=B6=E4=BB=B6=E4=BA=BA:* Alexander Vainshtein >> *=E6=8A=84=E9=80=81:* spring@ietf.org; Stewart Bryant; >> draft-cheng-spring-mpls-path-segment@ietf.org; mpls@ietf.org; Loa >> Andersson >> *=E4=B8=BB=E9=A2=98:* Re: [spring] to progress draft-cheng-spring-mpls-p= ath-segment >> >> >> >> Dear All, >> >> I concur with all what has been said in support of the adoption of this >> draft by SPRING WG. The document is well-written, addresses the real >> problem in SR-MPLS, and the proposed solution is technically viable. >> >> My comments and questions are entirely for further discussion: >> >> - would the draft be expanded to demonstrate how "the Path Segment >> may be used to identify an SR-MPLS Policy, its Candidate-Path (CP) or= a SID >> List (SL)"? >> >> [Weiqiang] Yes, It is necessary and we will add some text to demonstrate >> this in the future version. >> >> - as many use cases for the Path Segment are related to OAM >> operations, it would be helpful to expand on the use of GAL and the P= ath >> Segment. >> >> [Weiqiang] It is always helpful to have more use cases. However, >> The GAL is used today in MPLS-TP LSPs to flag the G-Ach and is used for = OAM >> packets only while the Path segment is used for data packets for the eac= h >> traffic flow. It is a little bit different. >> >> Regards, >> >> Greg >> >> >> >> On Thu, Feb 14, 2019 at 1:12 AM Alexander Vainshtein < >> Alexander.Vainshtein@ecitele..com > >> wrote: >> >> +1. >> >> >> >> I have been following this draft from its -00 revision. The current >> revision has resolved most of the issues I (and others) have been raised >> (e.g., elimination of excessive options). >> >> >> >> From my POV, in its current state the draft meets two basic requirements >> for the WG adoption: >> >> 1. It addresses a real and relevant problem, namely the MPLS Flow >> Identification problem discussed in general in RFC 8372 >> and scoped to SR-MPLS LSPs in this >> draft. Specifics of SR-MPLS include the need to provide end-to-end liven= ess >> check that is one of the requirements explicitly specified in Section 2 = of RFC >> 8355 . >> >> 2. It provides a reasonable (from my POV) approach to solution of >> this problem. >> >> >> >> I also concur with Stewart=E2=80=99s comment about strong similarity bet= ween the >> approach taken in this draft for SR-MPLS and generic work in progress on >> synonymous flow labels >> that has >> been already adopted as a MPLS WG item. To me this is yet another >> indication that the draft should be adopted. >> >> >> >> My 2c, >> >> Sasha >> >> >> >> Office: +972-39266302 >> >> Cell: +972-549266302 >> >> Email: Alexander.Vainshtein@ecitele.com >> >> >> >> -----Original Message----- >> From: spring On Behalf Of Stewart Bryant >> Sent: Wednesday, February 13, 2019 12:48 PM >> To: Loa Andersson >; spring@ietf.org; >> draft-cheng-spring-mpls-path-segment@ietf.org >> Subject: Re: [spring] to progress draft-cheng-spring-mpls-path-segment >> >> >> >> I have just read the draft and agree that it should be adopted by the WG= . >> It solves an important problem in instrumenting and protecting an SR pat= h. >> >> >> >> It should be noted that we needed to do something very similar in >> mainstream MPLS via the synonymous label work which is already adopted. >> >> However SL did not address the SR case.. We therefore need this path >> label work to be progressed. >> >> >> >> - Stewart >> >> >> >> On 10/02/2019 08:11, Loa Andersson wrote: >> >> > Working Group, >> >> > >> >> > I have reviewed draft-cheng-spring-mpls-path-segment and as far as I >> >> > can see, it is ready for wg adoption. >> >> > >> >> > There were some comments in Bangkok, but due to the many collisions >> >> > between working groups at that meeting I couldn't attend the SPRING >> >> > f2f. >> >> > >> >> > The minutes are not clear, but as far as I understand, there is >> >> > nothing that can't be resolved in the wg process. >> >> > >> >> > /Loa >> >> >> >> _______________________________________________ >> >> spring mailing list >> >> spring@ietf.org >> >> https://www..ietf.org/mailman/listinfo/spring >> >> >> >> ________________________________________________________________________= ___ >> >> This e-mail message is intended for the recipient only and contains >> information which is >> CONFIDENTIAL and which may be proprietary to ECI Telecom. If you have >> received this >> transmission in error, please inform us by e-mail, phone or fax, and the= n >> delete the original >> and all copies thereof. >> >> ________________________________________________________________________= ___ >> >> _______________________________________________ >> spring mailing list >> spring@ietf.org >> https://www.ietf.org/mailman/listinfo/spring >> >> _______________________________________________ > spring mailing list > spring@ietf.org > https://www.ietf.org/mailman/listinfo/spring > --00000000000039367b058285947d Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi Greg,

I am not sure if th= e question has been answered. I would think GAL is at the bottom of the lab= el stack.

Thanks,
Rakesh

<= /div>

On Sat, Feb 16, 2019 at 4:24 PM Greg Mirsky <gregimirsky@gmail.com> wrote:
Hi=C2=A0Weiqiang C= heng,
thank you for your expedient response to my questions. The docume= nt states that one of the use cases for the Path segment is to be used as a= performance, packet loss and/or delay, measurement session identifier. I t= hink that RFC 6374 is the most suitable for PM OAM in SR-MPLS environment. = Of course, the type of the encapsulated=C2=A0message can be identified usin= g the destination UDP port number with IP/UDP encapsulation. But another op= tion is to use G-ACh encapsulation. That would require the use of GAL. And = that is how I've arrived at my original question (I should have explain= ed it better, my apologies):
How the Path segment and GAL = are placed relative to each other in the SR-MPLS label stack?
Regards,
Greg

On Fri, Feb 15, 2019 at 4:= 40 PM Weiqiang Cheng <chengweiqiang@chinamobile.com> wrote:
Hi Greg,=

Thanks a lot for your c= omments.

My comments are in-line.

=C2=A0

B.R.

Weiqiang Cheng

=C2=A0

=E5=8F=91=E4=BB= =B6=E4=BA=BA: Greg Mirsky [mailto:gregimirsky@gmail.com]
=E5=8F=91=E9=80=81=E6=97=B6=E9=97=B4: 20= 19=E5=B9=B42=E6=9C=8815=E6=97=A5 3:= 37
=E6=94=B6=E4=BB=B6=E4=BA=BA: Alexander Vainshtein
=E6=8A=84=E9=80=81= : spring@ietf.org; Stewart Bryant; draft-cheng-spring-mpls-path-segment@ietf.org; mpls@ietf.org; Loa Andersson
=E4=B8=BB=E9=A2=98:
R= e: [spring] to progress draft-cheng-spring-mpls-path-segment<= /span>

= =C2=A0

Dear All,

= I concur with all what has been said in support of the= adoption of this draft by SPRING WG. The document is well-written, address= es the real problem in SR-MPLS, and the proposed solution is technically vi= able.

My comments and questions are entirely for further discussion:

  • would the=C2=A0draft be expanded to demonstrate how &= quot;the Path Segment may be used to identify an SR-MPLS Policy, its Candid= ate-Path (CP) or a SID List (SL)"?

[Weiq= iang] Yes, It is necessary and=C2=A0we will add some text to demonstrate th= is in the future version.

  • as many use cases for the Path Segme= nt are related to OAM operations, it would be helpful to expand on the use = of GAL and the Path Segment.

=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0 =C2=A0[Weiqiang] It is always= helpful to have more use cases. However, The GAL is used today in MPLS-TP = LSPs to flag the G-Ach and is used for OAM packets only while the Path segm= ent is used for data packets for the each traffic flow. It is a little bit = different.

Regards,

Greg

=C2=A0<= /u>

On Thu,= Feb 14, 2019 at 1:12 AM Alexander Vainshtein <Alexander.Vainshtein@ecitele..= com> wrote:

+1.

=C2=A0

I have been following this dr= aft from its -00 revision. The current revision has resolved most of the is= sues I (and others) have been raised (e.g., elimination of excessive option= s).

=C2=A0

From my POV, in its current state the draft meets two basic re= quirements for the WG adoption:

1.=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 It addresses a real and relevant problem, namely the MPLS Flow Identificat= ion problem discussed in general in RFC 8372 and scoped to SR-MPLS LSPs in this = draft. Specifics of SR-MPLS include the need to provide end-to-end liveness= check that is one of the requirements explicitly specified in Section 2 of= RFC 8355= .

2.=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0 It provides a reasonable = (from my POV) approach to =C2=A0solution of this problem.

=C2=A0=

I also c= oncur with Stewart=E2=80=99s comment about strong similarity between the ap= proach taken in this draft for SR-MPLS and generic work in = progress on synonymous flow labels that has been already adopted as a M= PLS WG item.=C2=A0 To me this is yet another indication that the draft shou= ld be adopted.

=C2=A0

My 2c,

Sasha

=C2=A0

Office: +972-39266302=

Cell:= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 +972-549266302

Email:=C2=A0=C2=A0 Alexander.Va= inshtein@ecitele.com

=C2=A0

-----Original Message-----
From: sprin= g <spring-b= ounces@ietf.org> On Behalf Of Stewart Bryant
Sent: Wednesday, Feb= ruary 13, 2019 12:48 PM
To: Loa Andersson <loa@pi..nu>; spring@ietf.org; draft-cheng-spring-mpls-pat= h-segment@ietf.org
Subject: Re: [spring] to progress draft-cheng-spr= ing-mpls-path-segment

=C2=A0

I have just read the draft and agree that it= should be adopted by the WG. It solves an important problem in instrumenti= ng and protecting an SR path.

=C2=A0

It should be noted that we needed to= do something very similar in mainstream MPLS via the synonymous label work= which is already adopted.

However SL did not address the SR case.. We th= erefore need this path label work to be progressed.

=C2=A0

- Stewart

=C2= =A0

On 10/02/2019 08:11, Loa Andersson wrote:

> Working Group,<= u>

>= =C2=A0

> I have reviewed draft-cheng-spring-mpls-path-segment and as fa= r as I

> can see, it is ready for wg adoption.<= /p>

>=C2=A0=

> The= re were some comments in Bangkok, but due to the many collisions =

> bet= ween working groups at that meeting I couldn't attend the SPRING

>= f2f.

>=C2=A0

> The minutes are not clear, but as far as I understa= nd, there is

> nothing that can't be resolved in the wg process.

= >=C2=A0

> /Loa

=C2=A0

____________________________________________= ___

spring mailing list

spring@ietf.org

https://w= ww..ietf.org/mailman/listinfo/spring


________________________= ___________________________________________________

This e-mail mess= age is intended for the recipient only and contains information which is CONFIDENTIAL and which may be proprietary to ECI Telecom. If you have rec= eived this
transmission in error, please inform us by e-mail, phone or = fax, and then delete the original
and all copies thereof.
__________= _________________________________________________________________=

__________= _____________________________________
spring mailing list
spring@ietf.org
https://ww= w.ietf.org/mailman/listinfo/spring

_______________________________________________
spring mailing list
spring@ietf.org https://www.ietf.org/mailman/listinfo/spring
--00000000000039367b058285947d-- From nobody Fri Feb 22 18:16:11 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 765E0129AA0; Fri, 22 Feb 2019 18:16:03 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: 0.601 X-Spam-Level: X-Spam-Status: No, score=0.601 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, URIBL_BLOCKED=0.001, URIBL_DBL_SPAM=2.5] autolearn=no autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 0vJpVlWWNpxJ; Fri, 22 Feb 2019 18:16:00 -0800 (PST) Received: from pipi.pi.nu (pipi.pi.nu [83.168.239.141]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 6DBD41293B1; Fri, 22 Feb 2019 18:16:00 -0800 (PST) Received: from [192.168.1.20] (unknown [119.94.169.156]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: loa@pi.nu) by pipi.pi.nu (Postfix) with ESMTPSA id 3C372180157E; Sat, 23 Feb 2019 03:15:56 +0100 (CET) To: Rakesh Gandhi , Greg Mirsky Cc: Weiqiang Cheng , mpls@ietf.org, spring , Alexander Vainshtein , draft-cheng-spring-mpls-path-segment@ietf.org, Stewart Bryant References: <0980ce7c-047c-519f-e7d5-98d32b498482@pi.nu> <9419b7d7-87ef-151f-5ed8-b0f78c6e83af@gmail.com> <050301d4c590$445f5d50$cd1e17f0$@com> From: Loa Andersson Message-ID: <9d7a2690-6ef4-438a-6ca8-0548ad2aca0e@pi.nu> Date: Sat, 23 Feb 2019 10:15:50 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.5.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit Archived-At: Subject: Re: [mpls] [spring] to progress draft-cheng-spring-mpls-path-segment X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 23 Feb 2019 02:16:04 -0000 Rakesh, authors, I have not been thinking about this too much. But if you look at fig 2 of draft-cheng-spring-mpls-path-segment, and you need a GACh between A and D, I'd say that the GAL will be at the bottom of stack. What if you need the CACh for the sub-path B to C, where will the GAL go? /Loa On 2019-02-23 09:25, Rakesh Gandhi wrote: > Hi Greg, > > I am not sure if the question has been answered. I would think GAL is at > the bottom of the label stack. > > Thanks, > Rakesh > > > On Sat, Feb 16, 2019 at 4:24 PM Greg Mirsky > wrote: > > Hi Weiqiang Cheng, > thank you for your expedient response to my questions. The document > states that one of the use cases for the Path segment is to be used > as a performance, packet loss and/or delay, measurement session > identifier. I think that RFC 6374 is the most suitable for PM OAM in > SR-MPLS environment. Of course, the type of the encapsulated message > can be identified using the destination UDP port number with IP/UDP > encapsulation. But another option is to use G-ACh encapsulation. > That would require the use of GAL. And that is how I've arrived at > my original question (I should have explained it better, my apologies): > > How the Path segment and GAL are placed relative to each other > in the SR-MPLS label stack? > > Regards, > Greg > > On Fri, Feb 15, 2019 at 4:40 PM Weiqiang Cheng > > wrote: > > Hi Greg,____ > > Thanks a lot for your comments.____ > > My comments are in-line.____ > > __ __ > > B.R.____ > > Weiqiang Cheng____ > > __ __ > > *发件人:*Greg Mirsky [mailto:gregimirsky@gmail.com > ] > *发送时间:*2019年2月15日3:37 > *收件人:*Alexander Vainshtein > *抄送:*spring@ietf.org ; Stewart Bryant; > draft-cheng-spring-mpls-path-segment@ietf.org > ; > mpls@ietf.org ; Loa Andersson > *主题:*Re: [spring] to progress > draft-cheng-spring-mpls-path-segment____ > > __ __ > > Dear All,____ > > I concur with all what has been said in support of the adoption > of this draft by SPRING WG. The document is well-written, > addresses the real problem in SR-MPLS, and the proposed solution > is technically viable.____ > > My comments and questions are entirely for further discussion:____ > > * would the draft be expanded to demonstrate how "the Path > Segment may be used to identify an SR-MPLS Policy, its > Candidate-Path (CP) or a SID List (SL)"?____ > > [Weiqiang] Yes, It is necessary and we will add some text to > demonstrate this in the future version. ____ > > * as many use cases for the Path Segment are related to OAM > operations, it would be helpful to expand on the use of GAL > and the Path Segment.____ > > [Weiqiang] It is always helpful to have more use cases. However, > The GAL is used today in MPLS-TP LSPs to flag the G-Ach and is > used for OAM packets only while the Path segment is used for > data packets for the each traffic flow. It is a little bit > different. ____ > > Regards,____ > > Greg____ > > __ __ > > On Thu, Feb 14, 2019 at 1:12 AM Alexander Vainshtein > > wrote:____ > > +1.____ > > ____ > > I have been following this draft from its -00 revision. The > current revision has resolved most of the issues I (and > others) have been raised (e.g., elimination of excessive > options).____ > > ____ > > From my POV, in its current state the draft meets two basic > requirements for the WG adoption:____ > > 1.It addresses a real and relevant problem, namely the MPLS > Flow Identification problem discussed in general in RFC 8372 > and scoped to SR-MPLS > LSPs in this draft. Specifics of SR-MPLS include the need to > provide end-to-end liveness check that is one of the > requirements explicitly specified in Section 2 of RFC 8355 > . ____ > > 2.It provides a reasonable (from my POV) approach to >  solution of this problem.____ > > ____ > > I also concur with Stewart’s comment about strong similarity > between the approach taken in this draft for SR-MPLS and > generic work in progress on synonymous flow labels > > that has been already adopted as a MPLS WG item.  To me this > is yet another indication that the draft should be adopted.____ > > ____ > > My 2c,____ > > Sasha____ > > ____ > > Office: +972-39266302____ > > Cell:      +972-549266302____ > > Email: Alexander.Vainshtein@ecitele.com > ____ > > ____ > > -----Original Message----- > From: spring > On Behalf Of Stewart Bryant > Sent: Wednesday, February 13, 2019 12:48 PM > To: Loa Andersson >; > spring@ietf.org ; > draft-cheng-spring-mpls-path-segment@ietf.org > > Subject: Re: [spring] to progress > draft-cheng-spring-mpls-path-segment____ > > ____ > > I have just read the draft and agree that it should be > adopted by the WG. It solves an important problem in > instrumenting and protecting an SR path.____ > > ____ > > It should be noted that we needed to do something very > similar in mainstream MPLS via the synonymous label work > which is already adopted. ____ > > However SL did not address the SR case.. We therefore need > this path label work to be progressed.____ > > ____ > > - Stewart____ > > ____ > > On 10/02/2019 08:11, Loa Andersson wrote:____ > > > Working Group,____ > > > ____ > > > I have reviewed draft-cheng-spring-mpls-path-segment and as far as I ____ > > > can see, it is ready for wg adoption.____ > > > ____ > > > There were some comments in Bangkok, but due to the many collisions ____ > > > between working groups at that meeting I couldn't attend the SPRING ____ > > > f2f.____ > > > ____ > > > The minutes are not clear, but as far as I understand, there is ____ > > > nothing that can't be resolved in the wg process.____ > > > ____ > > > /Loa____ > > ____ > > ___________________________________________________ > > spring mailing list____ > > spring@ietf.org ____ > > https://www..ietf.org/mailman/listinfo/spring____ > > > ___________________________________________________________________________ > > This e-mail message is intended for the recipient only and > contains information which is > CONFIDENTIAL and which may be proprietary to ECI Telecom. If > you have received this > transmission in error, please inform us by e-mail, phone or > fax, and then delete the original > and all copies thereof. > _______________________________________________________________________________ > > _______________________________________________ > spring mailing list > spring@ietf.org > https://www.ietf.org/mailman/listinfo/spring____ > > _______________________________________________ > spring mailing list > spring@ietf.org > https://www.ietf.org/mailman/listinfo/spring > -- Loa Andersson email: loa@pi.nu Senior MPLS Expert Bronze Dragon Consulting phone: +46 739 81 21 64 From nobody Fri Feb 22 19:56:05 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id BAC40130EBD; Fri, 22 Feb 2019 19:56:03 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: 0.502 X-Spam-Level: X-Spam-Status: No, score=0.502 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001, URIBL_DBL_SPAM=2.5] autolearn=no autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 7NtFJVdRWczE; Fri, 22 Feb 2019 19:56:01 -0800 (PST) Received: from mail-lf1-x134.google.com (mail-lf1-x134.google.com [IPv6:2a00:1450:4864:20::134]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 4E7B71288BD; Fri, 22 Feb 2019 19:56:00 -0800 (PST) Received: by mail-lf1-x134.google.com with SMTP id m11so3215018lfc.6; Fri, 22 Feb 2019 19:56:00 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=++F7H6NcceQJXOwjR5Ml6zlNL91pRWIGtNW0SEe8Krc=; b=f3eXBtZAaBQTvoaL2ScUkP3arbrGwavuMEmIrbtTvdIvy5gvcbWb6tTVgCOSda2t0O bl4JWI3wML5z9VAeZ1kyo2YwPGs2gQU4hRxVZ5Wxdp4rjTEAhkzYCkk5o57E8fFrfud9 WTCFDdP0Nimknbf1TxMUPRlKmCxhKM4LlcppttVV6sqVdo/eG2M+scd63YJhd6qrLdKk 7uO6Purc2M6thFwRa2imZB3fxhr8OCC4CBlTMPER0HEQeWCPtz4N9Zp2GRA991Kaegqr GOzunb10ikB+mOTuh/fAD9pgvee8Asqc/oSAKs1BUbP4Guze5nt8bmrA7sR5KwhtgSJ3 4X/Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=++F7H6NcceQJXOwjR5Ml6zlNL91pRWIGtNW0SEe8Krc=; b=GyJKIKIen9d2dv6FvjnZqq4MXe+itwjKzx6YDMCGC7nxO+cqfZXAqmnduWojXLIaaM NJUv5HvfjV8dFyNKu+cEwZWFoVk8K033IyW08sYT8qnmQxDIxZtXpR0L7JIVrM5VRABt zs/uVPhhSDVi160ZiIIRWkUxhtXo1mCjZS1P9D+ANy6uh9odUDHatMy82c0aYsx2g1/p R6m8b/XQM/b2zgvsum53zPtsgv2M0ITtyxP8b8UzGbDcg4+MErCbCs6puBlKW4RgPe0V 41n4p4/OmDb7G3ZXNT8HIb5Z+8nL1pXFwT6nt4r2J2I/3FomK7kGmLOjXsQtoEL7yt3C BmbQ== X-Gm-Message-State: AHQUAuagvG2EBhDCXEP6zB1IATATitU87o0YfJIf1WwHfUc85R5ld7tH zPT/9q3bmJyof4tU4yhc7tmox4lVIjATnyzOrwM= X-Google-Smtp-Source: AHgI3IYGHwiwF5kS5oZ0T+HtYZqQ9eh9vQNWkNAVPJ8cvn2JJJ+riZWT2UH7HAk9nZsWkxpWcTl8Gci9PsbRaICPrp0= X-Received: by 2002:a19:260e:: with SMTP id m14mr4548024lfm.158.1550894158065; Fri, 22 Feb 2019 19:55:58 -0800 (PST) MIME-Version: 1.0 References: <0980ce7c-047c-519f-e7d5-98d32b498482@pi.nu> <9419b7d7-87ef-151f-5ed8-b0f78c6e83af@gmail.com> <050301d4c590$445f5d50$cd1e17f0$@com> <9d7a2690-6ef4-438a-6ca8-0548ad2aca0e@pi.nu> In-Reply-To: <9d7a2690-6ef4-438a-6ca8-0548ad2aca0e@pi.nu> From: Greg Mirsky Date: Fri, 22 Feb 2019 19:55:49 -0800 Message-ID: To: Loa Andersson Cc: Rakesh Gandhi , Weiqiang Cheng , mpls@ietf.org, spring , Alexander Vainshtein , draft-cheng-spring-mpls-path-segment@ietf.org, Stewart Bryant Content-Type: multipart/alternative; boundary="000000000000603427058287af50" Archived-At: Subject: Re: [mpls] [spring] to progress draft-cheng-spring-mpls-path-segment X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 23 Feb 2019 03:56:04 -0000 --000000000000603427058287af50 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Loa, I think it will be similar to SPME and we'll need to have another SR-tunnel B-C with its own Path segment allocated by node C. But GAL will still be BoS. Regards, Greg. On Fri, Feb 22, 2019 at 6:15 PM Loa Andersson wrote: > Rakesh, authors, > > I have not been thinking about this too much. But if you look at fig 2 > of draft-cheng-spring-mpls-path-segment, and you need a GACh between > A and D, I'd say that the GAL will be at the bottom of stack. > > What if you need the CACh for the sub-path B to C, where will the GAL > go? > > /Loa > > > > On 2019-02-23 09:25, Rakesh Gandhi wrote: > > Hi Greg, > > > > I am not sure if the question has been answered. I would think GAL is a= t > > the bottom of the label stack. > > > > Thanks, > > Rakesh > > > > > > On Sat, Feb 16, 2019 at 4:24 PM Greg Mirsky > > wrote: > > > > Hi Weiqiang Cheng, > > thank you for your expedient response to my questions. The document > > states that one of the use cases for the Path segment is to be used > > as a performance, packet loss and/or delay, measurement session > > identifier. I think that RFC 6374 is the most suitable for PM OAM i= n > > SR-MPLS environment. Of course, the type of the encapsulated messag= e > > can be identified using the destination UDP port number with IP/UDP > > encapsulation. But another option is to use G-ACh encapsulation. > > That would require the use of GAL. And that is how I've arrived at > > my original question (I should have explained it better, my > apologies): > > > > How the Path segment and GAL are placed relative to each other > > in the SR-MPLS label stack? > > > > Regards, > > Greg > > > > On Fri, Feb 15, 2019 at 4:40 PM Weiqiang Cheng > > > > wrote: > > > > Hi Greg,____ > > > > Thanks a lot for your comments.____ > > > > My comments are in-line.____ > > > > __ __ > > > > B.R.____ > > > > Weiqiang Cheng____ > > > > __ __ > > > > *=E5=8F=91=E4=BB=B6=E4=BA=BA:*Greg Mirsky [mailto:gregimirsky@g= mail.com > > ] > > *=E5=8F=91=E9=80=81=E6=97=B6=E9=97=B4:*2019=E5=B9=B42=E6=9C=881= 5=E6=97=A53:37 > > *=E6=94=B6=E4=BB=B6=E4=BA=BA:*Alexander Vainshtein > > *=E6=8A=84=E9=80=81:*spring@ietf.org ; = Stewart Bryant; > > draft-cheng-spring-mpls-path-segment@ietf.org > > ; > > mpls@ietf.org ; Loa Andersson > > *=E4=B8=BB=E9=A2=98:*Re: [spring] to progress > > draft-cheng-spring-mpls-path-segment____ > > > > __ __ > > > > Dear All,____ > > > > I concur with all what has been said in support of the adoption > > of this draft by SPRING WG. The document is well-written, > > addresses the real problem in SR-MPLS, and the proposed solutio= n > > is technically viable.____ > > > > My comments and questions are entirely for further > discussion:____ > > > > * would the draft be expanded to demonstrate how "the Path > > Segment may be used to identify an SR-MPLS Policy, its > > Candidate-Path (CP) or a SID List (SL)"?____ > > > > [Weiqiang] Yes, It is necessary and we will add some text to > > demonstrate this in the future version. ____ > > > > * as many use cases for the Path Segment are related to OAM > > operations, it would be helpful to expand on the use of GAL > > and the Path Segment.____ > > > > [Weiqiang] It is always helpful to have more use cases. However= , > > The GAL is used today in MPLS-TP LSPs to flag the G-Ach and is > > used for OAM packets only while the Path segment is used for > > data packets for the each traffic flow. It is a little bit > > different. ____ > > > > Regards,____ > > > > Greg____ > > > > __ __ > > > > On Thu, Feb 14, 2019 at 1:12 AM Alexander Vainshtein > > > > wrote:____ > > > > +1.____ > > > > ____ > > > > I have been following this draft from its -00 revision. The > > current revision has resolved most of the issues I (and > > others) have been raised (e.g., elimination of excessive > > options).____ > > > > ____ > > > > From my POV, in its current state the draft meets two basi= c > > requirements for the WG adoption:____ > > > > 1.It addresses a real and relevant problem, namely the MPLS > > Flow Identification problem discussed in general in RFC 837= 2 > > and scoped to SR-MPLS > > LSPs in this draft. Specifics of SR-MPLS include the need t= o > > provide end-to-end liveness check that is one of the > > requirements explicitly specified in Section 2 of RFC 8355 > > . ____ > > > > 2.It provides a reasonable (from my POV) approach to > > solution of this problem.____ > > > > ____ > > > > I also concur with Stewart=E2=80=99s comment about strong s= imilarity > > between the approach taken in this draft for SR-MPLS and > > generic work in progress on synonymous flow labels > > < > https://tools.ietf.org/html/draft-ietf-mpls-sfl-framework-04> > > that has been already adopted as a MPLS WG item. To me thi= s > > is yet another indication that the draft should be > adopted.____ > > > > ____ > > > > My 2c,____ > > > > Sasha____ > > > > ____ > > > > Office: +972-39266302____ > > > > Cell: +972-549266302____ > > > > Email: Alexander.Vainshtein@ecitele.com > > ____ > > > > ____ > > > > -----Original Message----- > > From: spring > > On Behalf Of Stewart > Bryant > > Sent: Wednesday, February 13, 2019 12:48 PM > > To: Loa Andersson >; > > spring@ietf.org ; > > draft-cheng-spring-mpls-path-segment@ietf.org > > > > Subject: Re: [spring] to progress > > draft-cheng-spring-mpls-path-segment____ > > > > ____ > > > > I have just read the draft and agree that it should be > > adopted by the WG. It solves an important problem in > > instrumenting and protecting an SR path.____ > > > > ____ > > > > It should be noted that we needed to do something very > > similar in mainstream MPLS via the synonymous label work > > which is already adopted. ____ > > > > However SL did not address the SR case.. We therefore need > > this path label work to be progressed.____ > > > > ____ > > > > - Stewart____ > > > > ____ > > > > On 10/02/2019 08:11, Loa Andersson wrote:____ > > > > > Working Group,____ > > > > > ____ > > > > > I have reviewed draft-cheng-spring-mpls-path-segment and > as far as I ____ > > > > > can see, it is ready for wg adoption.____ > > > > > ____ > > > > > There were some comments in Bangkok, but due to the many > collisions ____ > > > > > between working groups at that meeting I couldn't attend > the SPRING ____ > > > > > f2f.____ > > > > > ____ > > > > > The minutes are not clear, but as far as I understand, > there is ____ > > > > > nothing that can't be resolved in the wg process.____ > > > > > ____ > > > > > /Loa____ > > > > ____ > > > > ___________________________________________________ > > > > spring mailing list____ > > > > spring@ietf.org ____ > > > > https://www..ietf.org/mailman/listinfo/spring____ > > > > > > > ________________________________________________________________________= ___ > > > > This e-mail message is intended for the recipient only and > > contains information which is > > CONFIDENTIAL and which may be proprietary to ECI Telecom. I= f > > you have received this > > transmission in error, please inform us by e-mail, phone or > > fax, and then delete the original > > and all copies thereof. > > > ________________________________________________________________________= _______ > > > > _______________________________________________ > > spring mailing list > > spring@ietf.org > > https://www.ietf.org/mailman/listinfo/spring____ > > > > _______________________________________________ > > spring mailing list > > spring@ietf.org > > https://www.ietf.org/mailman/listinfo/spring > > > > -- > > > Loa Andersson email: loa@pi.nu > Senior MPLS Expert > Bronze Dragon Consulting phone: +46 739 81 21 64 > --000000000000603427058287af50 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi Loa,
I think it will be similar to SPME and we'= ll need to have another SR-tunnel B-C with its own Path segment allocated b= y node C. But GAL will still be BoS.

Regards,
Greg.=C2=A0

On Fri, Feb 22, 2019 at 6:15 PM Loa Andersson <loa@pi.nu> wrote:
Rakesh, authors,

I have not been thinking about this too much. But if you look at fig 2
of draft-cheng-spring-mpls-path-segment, and you need a GACh between
A and D, I'd say that the GAL will be at the bottom of stack.

What if you need the CACh for the sub-path B to C, where will the GAL
go?

/Loa



On 2019-02-23 09:25, Rakesh Gandhi wrote:
> Hi Greg,
>
> I am not sure if the question has been answered. I would think GAL is = at
> the bottom of the label stack.
>
> Thanks,
> Rakesh
>
>
> On Sat, Feb 16, 2019 at 4:24 PM Greg Mirsky <gregimirsky@gmail.com
> <mailto:= gregimirsky@gmail.com>> wrote:
>
>=C2=A0 =C2=A0 =C2=A0Hi=C2=A0Weiqiang Cheng,
>=C2=A0 =C2=A0 =C2=A0thank you for your expedient response to my questio= ns. The document
>=C2=A0 =C2=A0 =C2=A0states that one of the use cases for the Path segme= nt is to be used
>=C2=A0 =C2=A0 =C2=A0as a performance, packet loss and/or delay, measure= ment session
>=C2=A0 =C2=A0 =C2=A0identifier. I think that RFC 6374 is the most suita= ble for PM OAM in
>=C2=A0 =C2=A0 =C2=A0SR-MPLS environment. Of course, the type of the enc= apsulated=C2=A0message
>=C2=A0 =C2=A0 =C2=A0can be identified using the destination UDP port nu= mber with IP/UDP
>=C2=A0 =C2=A0 =C2=A0encapsulation. But another option is to use G-ACh e= ncapsulation.
>=C2=A0 =C2=A0 =C2=A0That would require the use of GAL. And that is how = I've arrived at
>=C2=A0 =C2=A0 =C2=A0my original question (I should have explained it be= tter, my apologies):
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0How the Path segment and GAL are plac= ed relative to each other
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0in the SR-MPLS label stack?
>
>=C2=A0 =C2=A0 =C2=A0Regards,
>=C2=A0 =C2=A0 =C2=A0Greg
>
>=C2=A0 =C2=A0 =C2=A0On Fri, Feb 15, 2019 at 4:40 PM Weiqiang Cheng
>=C2=A0 =C2=A0 =C2=A0<chengweiqiang@chinamobile.com
>=C2=A0 =C2=A0 =C2=A0<mailto:chengweiqiang@chinamobile.com>> wrote:=
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Hi Greg,____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Thanks a lot for your comments.____ >
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0My comments are in-line.____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0__ __
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0B.R.____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Weiqiang Cheng____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0__ __
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0*=E5=8F=91=E4=BB=B6=E4=BA=BA:*Greg Mi= rsky [mailto:gre= gimirsky@gmail.com
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<mailto:gregimirsky@gmail.com>]
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0*=E5=8F=91=E9=80=81=E6=97=B6=E9=97=B4= :*2019=E5=B9=B42=E6=9C=8815=E6=97=A53:37
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0*=E6=94=B6=E4=BB=B6=E4=BA=BA:*Alexand= er Vainshtein
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0*=E6=8A=84=E9=80=81:*spring@ietf.org <mailto:spring@ietf.org>; Stew= art Bryant;
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0draft-cheng-spring-mpls-path-= segment@ietf.org
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<mailto:draft-cheng-spring= -mpls-path-segment@ietf.org>;
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0mpls@ietf.org <mailto:mpls@ietf.org>; Loa Andersson
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0*=E4=B8=BB=E9=A2=98:*Re: [spring] to = progress
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0draft-cheng-spring-mpls-path-segment_= ___
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0__ __
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Dear All,____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0I concur with all what has been said = in support of the adoption
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0of this draft by SPRING WG. The docum= ent is well-written,
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0addresses the real problem in SR-MPLS= , and the proposed solution
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0is technically viable.____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0My comments and questions are entirel= y for further discussion:____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0* would the=C2=A0draft be expa= nded to demonstrate how "the Path
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Segment may be used to = identify an SR-MPLS Policy, its
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Candidate-Path (CP) or = a SID List (SL)"?____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[Weiqiang] Yes, It is necessary and= =C2=A0we will add some text to
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0demonstrate this in the future versio= n. ____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0* as many use cases for the Pa= th Segment are related to OAM
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0operations, it would be= helpful to expand on the use of GAL
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0and the Path Segment.__= __
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[Weiqiang] It is always helpful to ha= ve more use cases. However,
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0The GAL is used today in MPLS-TP LSPs= to flag the G-Ach and is
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0used for OAM packets only while the P= ath segment is used for
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0data packets for the each traffic flo= w. It is a little bit
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0different. ____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Regards,____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Greg____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0__ __
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0On Thu, Feb 14, 2019 at 1:12 AM Alexa= nder Vainshtein
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<Alexander.Vainshtein@ecitele..com=
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<mailto:Alexander.Vainshtein@ecitele.co= m>> wrote:____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0+1.____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0I have been following t= his draft from its -00 revision. The
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0current revision has re= solved most of the issues I (and
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0others) have been raise= d (e.g., elimination of excessive
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0options).____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 From my POV, in its cu= rrent state the draft meets two basic
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0requirements for the WG= adoption:____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A01.It addresses a real a= nd relevant problem, namely the MPLS
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Flow Identification pro= blem discussed in general in RFC 8372
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<https://t= ools.ietf.org/html/rfc8372> and scoped to SR-MPLS
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0LSPs in this draft. Spe= cifics of SR-MPLS include the need to
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0provide end-to-end live= ness check that is one of the
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0requirements explicitly= specified in Section 2 of RFC 8355
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<https://t= ools.ietf.org/html/rfc8355>. ____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A02.It provides a reasona= ble (from my POV) approach to
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0solution of this= problem.____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0I also concur with Stew= art=E2=80=99s comment about strong similarity
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0between the approach ta= ken in this draft for SR-MPLS and
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0generic work in progres= s on synonymous flow labels
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<https://tools.ietf.org/html/draft-ietf-mpls-sfl-framework-0= 4>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0that has been already a= dopted as a MPLS WG item.=C2=A0 To me this
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0is yet another indicati= on that the draft should be adopted.____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0My 2c,____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Sasha____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Office: +972-39266302__= __
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Cell:=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0 +972-549266302____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Email: Alexander.Vainshtein@= ecitele.com
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<mailto:Alexander.Vainsht= ein@ecitele.com>____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0-----Original Message--= ---
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0From: spring <spring-bounces@ietf.= org
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<mailto:spring-bounces@ietf.org>> On Behalf Of Stewart Bryant
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Sent: Wednesday, Februa= ry 13, 2019 12:48 PM
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0To: Loa Andersson <l= oa@pi..nu <mailto:
loa@pi.= nu>>;
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0spring@ietf.org <mailto:spring@ietf.org>;
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0draft-cheng-spr= ing-mpls-path-segment@ietf.org
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<mailto:draf= t-cheng-spring-mpls-path-segment@ietf.org>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Subject: Re: [spring] t= o progress
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0draft-cheng-spring-mpls= -path-segment____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0I have just read the dr= aft and agree that it should be
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0adopted by the WG. It s= olves an important problem in
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0instrumenting and prote= cting an SR path.____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0It should be noted that= we needed to do something very
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0similar in mainstream M= PLS via the synonymous label work
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0which is already adopte= d. ____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0However SL did not addr= ess the SR case.. We therefore need
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0this path label work to= be progressed.____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0- Stewart____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0On 10/02/2019 08:11, Lo= a Andersson wrote:____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0> Working Group,____=
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0> ____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0> I have reviewed dr= aft-cheng-spring-mpls-path-segment and as far as I ____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0> can see, it is rea= dy for wg adoption.____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0> ____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0> There were some co= mments in Bangkok, but due to the many collisions ____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0> between working gr= oups at that meeting I couldn't attend the SPRING ____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0> f2f.____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0> ____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0> The minutes are no= t clear, but as far as I understand, there is ____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0> nothing that can&#= 39;t be resolved in the wg process.____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0> ____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0> /Loa____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0_______________________= ____________________________
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0spring mailing list____=
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0spring@ietf.org <mailto:spring@ietf.org>____
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0https://www..i= etf.org/mailman/listinfo/spring____
>
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0_______________________= ____________________________________________________
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0This e-mail message is = intended for the recipient only and
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0contains information wh= ich is
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0CONFIDENTIAL and which = may be proprietary to ECI Telecom. If
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0you have received this<= br> >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0transmission in error, = please inform us by e-mail, phone or
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0fax, and then delete th= e original
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0and all copies thereof.=
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0_______________________= ________________________________________________________
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0_______________________= ________________________
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0spring mailing list
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0spring@ietf.org <mailto:spring@ietf.org>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0= https://www.ietf.org/mailman/listinfo/spring____
>
>=C2=A0 =C2=A0 =C2=A0_______________________________________________
>=C2=A0 =C2=A0 =C2=A0spring mailing list
>=C2=A0 =C2=A0 =C2=A0spring@ietf.org <mailto:spring@ietf.org>
>=C2=A0 =C2=A0 =C2=A0https://www.ietf.org/mailman/lis= tinfo/spring
>

--


Loa Andersson=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0= =C2=A0 =C2=A0 =C2=A0 email: loa@pi.nu
Senior MPLS Expert
Bronze Dragon Consulting=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0pho= ne: +46 739 81 21 64
--000000000000603427058287af50-- From nobody Fri Feb 22 20:15:40 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id C54E6128B33; Fri, 22 Feb 2019 20:15:37 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: 0.601 X-Spam-Level: X-Spam-Status: No, score=0.601 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, URIBL_BLOCKED=0.001, URIBL_DBL_SPAM=2.5] autolearn=no autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id KCRtQB-Rahks; Fri, 22 Feb 2019 20:15:35 -0800 (PST) Received: from pipi.pi.nu (pipi.pi.nu [83.168.239.141]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 794781288BD; Fri, 22 Feb 2019 20:15:35 -0800 (PST) Received: from [192.168.1.20] (unknown [119.94.169.156]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: loa@pi.nu) by pipi.pi.nu (Postfix) with ESMTPSA id 6F6D4180157E; Sat, 23 Feb 2019 05:15:31 +0100 (CET) To: Greg Mirsky Cc: mpls@ietf.org, spring , Alexander Vainshtein , Weiqiang Cheng , Rakesh Gandhi , draft-cheng-spring-mpls-path-segment@ietf.org, Stewart Bryant References: <0980ce7c-047c-519f-e7d5-98d32b498482@pi.nu> <9419b7d7-87ef-151f-5ed8-b0f78c6e83af@gmail.com> <050301d4c590$445f5d50$cd1e17f0$@com> <9d7a2690-6ef4-438a-6ca8-0548ad2aca0e@pi.nu> From: Loa Andersson Message-ID: <13cb42a8-e298-c3cc-d116-219f144f5357@pi.nu> Date: Sat, 23 Feb 2019 12:15:26 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.5.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit Archived-At: Subject: Re: [mpls] [spring] to progress draft-cheng-spring-mpls-path-segment X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 23 Feb 2019 04:15:38 -0000 Greg, We are close, though I hope the rules are that GAL is bottom of stack, and that a packet with a GACh does not carry user payload. I should have said that "if you want a GACg for the I don't understand why we need a "new" SR tunnel, the GAL/GACh can ride with the GAL as bottom of stack with the label stack for Sub-path(B->C), right? If you put it on "another" tunnel, how do you guarantee fate sharing? /Loa /Loa On 2019-02-23 11:55, Greg Mirsky wrote: > Hi Loa, > I think it will be similar to SPME and we'll need to have another > SR-tunnel B-C with its own Path segment allocated by node C. But GAL > will still be BoS. > > Regards, > Greg. > > On Fri, Feb 22, 2019 at 6:15 PM Loa Andersson > wrote: > > Rakesh, authors, > > I have not been thinking about this too much. But if you look at fig 2 > of draft-cheng-spring-mpls-path-segment, and you need a GACh between > A and D, I'd say that the GAL will be at the bottom of stack. > > What if you need the CACh for the sub-path B to C, where will the GAL > go? > > /Loa > > > > On 2019-02-23 09:25, Rakesh Gandhi wrote: > > Hi Greg, > > > > I am not sure if the question has been answered. I would think > GAL is at > > the bottom of the label stack. > > > > Thanks, > > Rakesh > > > > > > On Sat, Feb 16, 2019 at 4:24 PM Greg Mirsky > > > >> wrote: > > > >     Hi Weiqiang Cheng, > >     thank you for your expedient response to my questions. The > document > >     states that one of the use cases for the Path segment is to > be used > >     as a performance, packet loss and/or delay, measurement session > >     identifier. I think that RFC 6374 is the most suitable for PM > OAM in > >     SR-MPLS environment. Of course, the type of the > encapsulated message > >     can be identified using the destination UDP port number with > IP/UDP > >     encapsulation. But another option is to use G-ACh encapsulation. > >     That would require the use of GAL. And that is how I've > arrived at > >     my original question (I should have explained it better, my > apologies): > > > >         How the Path segment and GAL are placed relative to each > other > >         in the SR-MPLS label stack? > > > >     Regards, > >     Greg > > > >     On Fri, Feb 15, 2019 at 4:40 PM Weiqiang Cheng > >      > >      >> wrote: > > > >         Hi Greg,____ > > > >         Thanks a lot for your comments.____ > > > >         My comments are in-line.____ > > > >         __ __ > > > >         B.R.____ > > > >         Weiqiang Cheng____ > > > >         __ __ > > > >         *发件人:*Greg Mirsky [mailto:gregimirsky@gmail.com > > >          >] > >         *发送时间:*2019年2月15日3:37 > >         *收件人:*Alexander Vainshtein > >         *抄送:*spring@ietf.org > >; Stewart Bryant; > > draft-cheng-spring-mpls-path-segment@ietf.org > > >          >; > > mpls@ietf.org >; Loa Andersson > >         *主题:*Re: [spring] to progress > >         draft-cheng-spring-mpls-path-segment____ > > > >         __ __ > > > >         Dear All,____ > > > >         I concur with all what has been said in support of the > adoption > >         of this draft by SPRING WG. The document is well-written, > >         addresses the real problem in SR-MPLS, and the proposed > solution > >         is technically viable.____ > > > >         My comments and questions are entirely for further > discussion:____ > > > >           * would the draft be expanded to demonstrate how "the Path > >             Segment may be used to identify an SR-MPLS Policy, its > >             Candidate-Path (CP) or a SID List (SL)"?____ > > > >         [Weiqiang] Yes, It is necessary and we will add some text to > >         demonstrate this in the future version. ____ > > > >           * as many use cases for the Path Segment are related to OAM > >             operations, it would be helpful to expand on the use > of GAL > >             and the Path Segment.____ > > > >         [Weiqiang] It is always helpful to have more use cases. > However, > >         The GAL is used today in MPLS-TP LSPs to flag the G-Ach > and is > >         used for OAM packets only while the Path segment is used for > >         data packets for the each traffic flow. It is a little bit > >         different. ____ > > > >         Regards,____ > > > >         Greg____ > > > >         __ __ > > > >         On Thu, Feb 14, 2019 at 1:12 AM Alexander Vainshtein > >          >          >> wrote:____ > > > >             +1.____ > > > >             ____ > > > >             I have been following this draft from its -00 > revision. The > >             current revision has resolved most of the issues I (and > >             others) have been raised (e.g., elimination of excessive > >             options).____ > > > >             ____ > > > >              From my POV, in its current state the draft meets > two basic > >             requirements for the WG adoption:____ > > > >             1.It addresses a real and relevant problem, namely > the MPLS > >             Flow Identification problem discussed in general in > RFC 8372 > >              and scoped to > SR-MPLS > >             LSPs in this draft. Specifics of SR-MPLS include the > need to > >             provide end-to-end liveness check that is one of the > >             requirements explicitly specified in Section 2 of RFC > 8355 > >             . ____ > > > >             2.It provides a reasonable (from my POV) approach to > >               solution of this problem.____ > > > >             ____ > > > >             I also concur with Stewart’s comment about strong > similarity > >             between the approach taken in this draft for SR-MPLS and > >             generic work in progress on synonymous flow labels > > >   > >             that has been already adopted as a MPLS WG item.  To > me this > >             is yet another indication that the draft should be > adopted.____ > > > >             ____ > > > >             My 2c,____ > > > >             Sasha____ > > > >             ____ > > > >             Office: +972-39266302____ > > > >             Cell:      +972-549266302____ > > > >             Email: Alexander.Vainshtein@ecitele.com > > >              >____ > > > >             ____ > > > >             -----Original Message----- > >             From: spring > >              >> On Behalf Of Stewart Bryant > >             Sent: Wednesday, February 13, 2019 12:48 PM > >             To: Loa Andersson >>; > > spring@ietf.org >; > > draft-cheng-spring-mpls-path-segment@ietf.org > > >              > > >             Subject: Re: [spring] to progress > >             draft-cheng-spring-mpls-path-segment____ > > > >             ____ > > > >             I have just read the draft and agree that it should be > >             adopted by the WG. It solves an important problem in > >             instrumenting and protecting an SR path.____ > > > >             ____ > > > >             It should be noted that we needed to do something very > >             similar in mainstream MPLS via the synonymous label work > >             which is already adopted. ____ > > > >             However SL did not address the SR case.. We therefore > need > >             this path label work to be progressed.____ > > > >             ____ > > > >             - Stewart____ > > > >             ____ > > > >             On 10/02/2019 08:11, Loa Andersson wrote:____ > > > >             > Working Group,____ > > > >             > ____ > > > >             > I have reviewed > draft-cheng-spring-mpls-path-segment and as far as I ____ > > > >             > can see, it is ready for wg adoption.____ > > > >             > ____ > > > >             > There were some comments in Bangkok, but due to the > many collisions ____ > > > >             > between working groups at that meeting I couldn't > attend the SPRING ____ > > > >             > f2f.____ > > > >             > ____ > > > >             > The minutes are not clear, but as far as I > understand, there is ____ > > > >             > nothing that can't be resolved in the wg process.____ > > > >             > ____ > > > >             > /Loa____ > > > >             ____ > > > >             ___________________________________________________ > > > >             spring mailing list____ > > > > spring@ietf.org >____ > > > > https://www..ietf.org/mailman/listinfo/spring____ > > > > > > > >  ___________________________________________________________________________ > > > >             This e-mail message is intended for the recipient > only and > >             contains information which is > >             CONFIDENTIAL and which may be proprietary to ECI > Telecom. If > >             you have received this > >             transmission in error, please inform us by e-mail, > phone or > >             fax, and then delete the original > >             and all copies thereof. > > >  _______________________________________________________________________________ > > > >             _______________________________________________ > >             spring mailing list > > spring@ietf.org > > > https://www.ietf.org/mailman/listinfo/spring____ > > > >     _______________________________________________ > >     spring mailing list > > spring@ietf.org > > > https://www.ietf.org/mailman/listinfo/spring > > > > -- > > > Loa Andersson                        email: loa@pi.nu > Senior MPLS Expert > Bronze Dragon Consulting             phone: +46 739 81 21 64 > > > _______________________________________________ > spring mailing list > spring@ietf.org > https://www.ietf.org/mailman/listinfo/spring > -- Loa Andersson email: loa@pi.nu Senior MPLS Expert Bronze Dragon Consulting phone: +46 739 81 21 64 From nobody Fri Feb 22 20:31:48 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 6AA80128B33; 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Fri, 22 Feb 2019 20:31:33 -0800 (PST) MIME-Version: 1.0 References: <0980ce7c-047c-519f-e7d5-98d32b498482@pi.nu> <9419b7d7-87ef-151f-5ed8-b0f78c6e83af@gmail.com> <050301d4c590$445f5d50$cd1e17f0$@com> <9d7a2690-6ef4-438a-6ca8-0548ad2aca0e@pi.nu> <13cb42a8-e298-c3cc-d116-219f144f5357@pi.nu> In-Reply-To: <13cb42a8-e298-c3cc-d116-219f144f5357@pi.nu> From: Greg Mirsky Date: Fri, 22 Feb 2019 20:31:22 -0800 Message-ID: To: Loa Andersson Cc: mpls@ietf.org, spring , Alexander Vainshtein , Weiqiang Cheng , Rakesh Gandhi , draft-cheng-spring-mpls-path-segment@ietf.org, Stewart Bryant Content-Type: multipart/alternative; boundary="000000000000a3e39c0582882e44" Archived-At: Subject: Re: [mpls] [spring] to progress draft-cheng-spring-mpls-path-segment X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 23 Feb 2019 04:31:39 -0000 --000000000000a3e39c0582882e44 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Loa, another tunnel with the Path segment from node C is, in my view, very close to SPME tunnel. The Path segment from C is needed because Path segment from D is not known to the node C, cannot be associated with the right SR-tunnel segment, i.e., tunnel B-C. The fate sharing may be achieved by using exactly the same SIDs as in the A-D tunnel for the B-C segment. And GAL is still BoS on B-C tunnel. Are we getting closer? Regards, Greg On Fri, Feb 22, 2019 at 8:15 PM Loa Andersson wrote: > Greg, > > We are close, though I hope the rules are that GAL is bottom of stack, > and that a packet with a GACh does not carry user payload. > > I should have said that "if you want a GACg for the > > I don't understand why we need a "new" SR tunnel, the GAL/GACh can > ride with the GAL as bottom of stack with the label stack for > Sub-path(B->C), right? If you put it on "another" tunnel, how do > you guarantee fate sharing? > > /Loa > > /Loa > > On 2019-02-23 11:55, Greg Mirsky wrote: > > Hi Loa, > > I think it will be similar to SPME and we'll need to have another > > SR-tunnel B-C with its own Path segment allocated by node C. But GAL > > will still be BoS. > > > > Regards, > > Greg. > > > > On Fri, Feb 22, 2019 at 6:15 PM Loa Andersson > > wrote: > > > > Rakesh, authors, > > > > I have not been thinking about this too much. But if you look at fi= g > 2 > > of draft-cheng-spring-mpls-path-segment, and you need a GACh betwee= n > > A and D, I'd say that the GAL will be at the bottom of stack. > > > > What if you need the CACh for the sub-path B to C, where will the G= AL > > go? > > > > /Loa > > > > > > > > On 2019-02-23 09:25, Rakesh Gandhi wrote: > > > Hi Greg, > > > > > > I am not sure if the question has been answered. I would think > > GAL is at > > > the bottom of the label stack. > > > > > > Thanks, > > > Rakesh > > > > > > > > > On Sat, Feb 16, 2019 at 4:24 PM Greg Mirsky > > > > > >> > wrote: > > > > > > Hi Weiqiang Cheng, > > > thank you for your expedient response to my questions. The > > document > > > states that one of the use cases for the Path segment is to > > be used > > > as a performance, packet loss and/or delay, measurement > session > > > identifier. I think that RFC 6374 is the most suitable for P= M > > OAM in > > > SR-MPLS environment. Of course, the type of the > > encapsulated message > > > can be identified using the destination UDP port number with > > IP/UDP > > > encapsulation. But another option is to use G-ACh > encapsulation. > > > That would require the use of GAL. And that is how I've > > arrived at > > > my original question (I should have explained it better, my > > apologies): > > > > > > How the Path segment and GAL are placed relative to each > > other > > > in the SR-MPLS label stack? > > > > > > Regards, > > > Greg > > > > > > On Fri, Feb 15, 2019 at 4:40 PM Weiqiang Cheng > > > > > > > > >> wrote: > > > > > > Hi Greg,____ > > > > > > Thanks a lot for your comments.____ > > > > > > My comments are in-line.____ > > > > > > __ __ > > > > > > B.R.____ > > > > > > Weiqiang Cheng____ > > > > > > __ __ > > > > > > *=E5=8F=91=E4=BB=B6=E4=BA=BA:*Greg Mirsky [mailto:gregim= irsky@gmail.com > > > > > > >] > > > *=E5=8F=91=E9=80=81=E6=97=B6=E9=97=B4:*2019=E5=B9=B42=E6= =9C=8815=E6=97=A53:37 > > > *=E6=94=B6=E4=BB=B6=E4=BA=BA:*Alexander Vainshtein > > > *=E6=8A=84=E9=80=81:*spring@ietf.org > > >; Stewart Bryant; > > > draft-cheng-spring-mpls-path-segment@ietf.org > > > > > > >; > > > mpls@ietf.org > >; Loa Andersson > > > *=E4=B8=BB=E9=A2=98:*Re: [spring] to progress > > > draft-cheng-spring-mpls-path-segment____ > > > > > > __ __ > > > > > > Dear All,____ > > > > > > I concur with all what has been said in support of the > > adoption > > > of this draft by SPRING WG. The document is well-written= , > > > addresses the real problem in SR-MPLS, and the proposed > > solution > > > is technically viable.____ > > > > > > My comments and questions are entirely for further > > discussion:____ > > > > > > * would the draft be expanded to demonstrate how "the > Path > > > Segment may be used to identify an SR-MPLS Policy, i= ts > > > Candidate-Path (CP) or a SID List (SL)"?____ > > > > > > [Weiqiang] Yes, It is necessary and we will add some tex= t > to > > > demonstrate this in the future version. ____ > > > > > > * as many use cases for the Path Segment are related t= o > OAM > > > operations, it would be helpful to expand on the use > > of GAL > > > and the Path Segment.____ > > > > > > [Weiqiang] It is always helpful to have more use cases. > > However, > > > The GAL is used today in MPLS-TP LSPs to flag the G-Ach > > and is > > > used for OAM packets only while the Path segment is used > for > > > data packets for the each traffic flow. It is a little b= it > > > different. ____ > > > > > > Regards,____ > > > > > > Greg____ > > > > > > __ __ > > > > > > On Thu, Feb 14, 2019 at 1:12 AM Alexander Vainshtein > > > > > > >> wrote:____ > > > > > > +1.____ > > > > > > ____ > > > > > > I have been following this draft from its -00 > > revision. The > > > current revision has resolved most of the issues I > (and > > > others) have been raised (e.g., elimination of > excessive > > > options).____ > > > > > > ____ > > > > > > From my POV, in its current state the draft meets > > two basic > > > requirements for the WG adoption:____ > > > > > > 1.It addresses a real and relevant problem, namely > > the MPLS > > > Flow Identification problem discussed in general in > > RFC 8372 > > > and scoped to > > SR-MPLS > > > LSPs in this draft. Specifics of SR-MPLS include the > > need to > > > provide end-to-end liveness check that is one of the > > > requirements explicitly specified in Section 2 of RF= C > > 8355 > > > . ____ > > > > > > 2.It provides a reasonable (from my POV) approach to > > > solution of this problem.____ > > > > > > ____ > > > > > > I also concur with Stewart=E2=80=99s comment about s= trong > > similarity > > > between the approach taken in this draft for SR-MPLS > and > > > generic work in progress on synonymous flow labels > > > > > > > > that has been already adopted as a MPLS WG item. To > > me this > > > is yet another indication that the draft should be > > adopted.____ > > > > > > ____ > > > > > > My 2c,____ > > > > > > Sasha____ > > > > > > ____ > > > > > > Office: +972-39266302____ > > > > > > Cell: +972-549266302____ > > > > > > Email: Alexander.Vainshtein@ecitele.com > > > > > > >____ > > > > > > ____ > > > > > > -----Original Message----- > > > From: spring > > > > > >> On Behalf Of Stewart Bryant > > > Sent: Wednesday, February 13, 2019 12:48 PM > > > To: Loa Andersson > >>; > > > spring@ietf.org > >; > > > draft-cheng-spring-mpls-path-segment@ietf.org > > > > > > > > > > Subject: Re: [spring] to progress > > > draft-cheng-spring-mpls-path-segment____ > > > > > > ____ > > > > > > I have just read the draft and agree that it should = be > > > adopted by the WG. It solves an important problem in > > > instrumenting and protecting an SR path.____ > > > > > > ____ > > > > > > It should be noted that we needed to do something ve= ry > > > similar in mainstream MPLS via the synonymous label > work > > > which is already adopted. ____ > > > > > > However SL did not address the SR case.. We therefor= e > > need > > > this path label work to be progressed.____ > > > > > > ____ > > > > > > - Stewart____ > > > > > > ____ > > > > > > On 10/02/2019 08:11, Loa Andersson wrote:____ > > > > > > > Working Group,____ > > > > > > > ____ > > > > > > > I have reviewed > > draft-cheng-spring-mpls-path-segment and as far as I ____ > > > > > > > can see, it is ready for wg adoption.____ > > > > > > > ____ > > > > > > > There were some comments in Bangkok, but due to th= e > > many collisions ____ > > > > > > > between working groups at that meeting I couldn't > > attend the SPRING ____ > > > > > > > f2f.____ > > > > > > > ____ > > > > > > > The minutes are not clear, but as far as I > > understand, there is ____ > > > > > > > nothing that can't be resolved in the wg > process.____ > > > > > > > ____ > > > > > > > /Loa____ > > > > > > ____ > > > > > > ___________________________________________________ > > > > > > spring mailing list____ > > > > > > spring@ietf.org > >____ > > > > > > https://www..ietf.org/mailman/listinfo/spring____ > > > > > > > > > > > > > > ________________________________________________________________________= ___ > > > > > > This e-mail message is intended for the recipient > > only and > > > contains information which is > > > CONFIDENTIAL and which may be proprietary to ECI > > Telecom. If > > > you have received this > > > transmission in error, please inform us by e-mail, > > phone or > > > fax, and then delete the original > > > and all copies thereof. > > > > > > ________________________________________________________________________= _______ > > > > > > _______________________________________________ > > > spring mailing list > > > spring@ietf.org > > > > > https://www.ietf.org/mailman/listinfo/spring____ > > > > > > _______________________________________________ > > > spring mailing list > > > spring@ietf.org > > > > > https://www.ietf.org/mailman/listinfo/spring > > > > > > > -- > > > > > > Loa Andersson email: loa@pi.nu loa@pi.nu> > > Senior MPLS Expert > > Bronze Dragon Consulting phone: +46 739 81 21 64 > > > > > > _______________________________________________ > > spring mailing list > > spring@ietf.org > > https://www.ietf.org/mailman/listinfo/spring > > > > -- > > > Loa Andersson email: loa@pi.nu > Senior MPLS Expert > Bronze Dragon Consulting phone: +46 739 81 21 64 > --000000000000a3e39c0582882e44 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi Loa,
another tunnel with the Path = segment from node C is, in my view, very close to SPME tunnel. The Path seg= ment from C is needed because Path segment from D is not known to the node = C, cannot be associated with the right SR-tunnel segment, i.e., tunnel B-C.= The fate sharing may be achieved by using exactly the same SIDs as in the = A-D tunnel for the B-C segment. And GAL is still BoS on B-C tunnel. Are we = getting closer?

Regards,
Greg

On Fr= i, Feb 22, 2019 at 8:15 PM Loa Andersson <l= oa@pi.nu> wrote:
Greg,

We are close, though I hope the rules are that GAL is bottom of stack,
and that a packet with a GACh does not carry user payload.

I should have said that "if you want a GACg for the

I don't understand why we need a "new" SR tunnel, the GAL/GAC= h can
ride with the GAL as bottom of stack with the label stack for
Sub-path(B->C), right? If you put it on "another" tunnel, how = do
you guarantee fate sharing?

/Loa

/Loa

On 2019-02-23 11:55, Greg Mirsky wrote:
> Hi Loa,
> I think it will be similar to SPME and we'll need to have another =
> SR-tunnel B-C with its own Path segment allocated by node C. But GAL <= br> > will still be BoS.
>
> Regards,
> Greg.
>
> On Fri, Feb 22, 2019 at 6:15 PM Loa Andersson <loa@pi.nu
> <mailto:loa@pi.nu>> wrote:
>
>=C2=A0 =C2=A0 =C2=A0Rakesh, authors,
>
>=C2=A0 =C2=A0 =C2=A0I have not been thinking about this too much. But i= f you look at fig 2
>=C2=A0 =C2=A0 =C2=A0of draft-cheng-spring-mpls-path-segment, and you ne= ed a GACh between
>=C2=A0 =C2=A0 =C2=A0A and D, I'd say that the GAL will be at the bo= ttom of stack.
>
>=C2=A0 =C2=A0 =C2=A0What if you need the CACh for the sub-path B to C, = where will the GAL
>=C2=A0 =C2=A0 =C2=A0go?
>
>=C2=A0 =C2=A0 =C2=A0/Loa
>
>
>
>=C2=A0 =C2=A0 =C2=A0On 2019-02-23 09:25, Rakesh Gandhi wrote:
>=C2=A0 =C2=A0 =C2=A0 > Hi Greg,
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 > I am not sure if the question has been answer= ed. I would think
>=C2=A0 =C2=A0 =C2=A0GAL is at
>=C2=A0 =C2=A0 =C2=A0 > the bottom of the label stack.
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 > Thanks,
>=C2=A0 =C2=A0 =C2=A0 > Rakesh
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 > On Sat, Feb 16, 2019 at 4:24 PM Greg Mirsky >=C2=A0 =C2=A0 =C2=A0<
gregimirsky@gmail.com <mailto:gregimirsky@gmail.com>
>=C2=A0 =C2=A0 =C2=A0 > <mailto:gregimirsky@gmail.com <mailto:gregimirsky@gmail.com>= >> wrote:
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0Hi=C2=A0Weiqiang Cheng, >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0thank you for your expedie= nt response to my questions. The
>=C2=A0 =C2=A0 =C2=A0document
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0states that one of the use= cases for the Path segment is to
>=C2=A0 =C2=A0 =C2=A0be used
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0as a performance, packet l= oss and/or delay, measurement session
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0identifier. I think that R= FC 6374 is the most suitable for PM
>=C2=A0 =C2=A0 =C2=A0OAM in
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0SR-MPLS environment. Of co= urse, the type of the
>=C2=A0 =C2=A0 =C2=A0encapsulated=C2=A0message
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0can be identified using th= e destination UDP port number with
>=C2=A0 =C2=A0 =C2=A0IP/UDP
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0encapsulation. But another= option is to use G-ACh encapsulation.
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0That would require the use= of GAL. And that is how I've
>=C2=A0 =C2=A0 =C2=A0arrived at
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0my original question (I sh= ould have explained it better, my
>=C2=A0 =C2=A0 =C2=A0apologies):
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0How the Path= segment and GAL are placed relative to each
>=C2=A0 =C2=A0 =C2=A0other
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0in the SR-MP= LS label stack?
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0Regards,
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0Greg
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0On Fri, Feb 15, 2019 at 4:= 40 PM Weiqiang Cheng
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0<chengweiqiang@chinamobile.com<= /a>
>=C2=A0 =C2=A0 =C2=A0<mailto:
chengweiqiang@chinamobile.com>
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0<mailto:chengweiqiang@chinamobi= le.com
>=C2=A0 =C2=A0 =C2=A0<mailto:chengweiqiang@chinamobile.com>>> wr= ote:
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Hi Greg,____=
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Thanks a lot= for your comments.____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0My comments = are in-line.____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0__ __
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0B.R.____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Weiqiang Che= ng____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0__ __
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0*=E5=8F=91= =E4=BB=B6=E4=BA=BA:*Greg Mirsky [mailto:gregimirsky@gmail.com
>=C2=A0 =C2=A0 =C2=A0<mailto:gregimirsky@gmail.com>
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<mailto:<= a href=3D"mailto:gregimirsky@gmail.com" target=3D"_blank">gregimirsky@gmail= .com
>=C2=A0 =C2=A0 =C2=A0<mailto:gregimirsky@gmail.com>>]
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0*=E5=8F=91= =E9=80=81=E6=97=B6=E9=97=B4:*2019=E5=B9=B42=E6=9C=8815=E6=97=A53:37
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0*=E6=94=B6= =E4=BB=B6=E4=BA=BA:*Alexander Vainshtein
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0*=E6=8A=84= =E9=80=81:*spring@ietf= .org <mailto:sp= ring@ietf.org>
>=C2=A0 =C2=A0 =C2=A0<mailto:spring@ietf.org <mailto:spring@ietf.org>>; Stewart Bryant;
>=C2=A0 =C2=A0 =C2=A0 > draft-cheng-spring-mpls-path-segment@= ietf.org
>=C2=A0 =C2=A0 =C2=A0<mailto:draft-cheng-spring-mpls-path-seg= ment@ietf.org>
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<mailto:<= a href=3D"mailto:draft-cheng-spring-mpls-path-segment@ietf.org" target=3D"_= blank">draft-cheng-spring-mpls-path-segment@ietf.org
>=C2=A0 =C2=A0 =C2=A0<mailto:draft-cheng-spring-mpls-path-seg= ment@ietf.org>>;
>=C2=A0 =C2=A0 =C2=A0 > mpls@ietf.org <mailto:mpls@ietf.org> <mailto:mpls@ietf.org
>=C2=A0 =C2=A0 =C2=A0<mailto:mpls@ietf.org>>; Loa Andersson
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0*=E4=B8=BB= =E9=A2=98:*Re: [spring] to progress
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0draft-cheng-= spring-mpls-path-segment____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0__ __
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Dear All,___= _
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0I concur wit= h all what has been said in support of the
>=C2=A0 =C2=A0 =C2=A0adoption
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0of this draf= t by SPRING WG. The document is well-written,
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0addresses th= e real problem in SR-MPLS, and the proposed
>=C2=A0 =C2=A0 =C2=A0solution
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0is technical= ly viable.____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0My comments = and questions are entirely for further
>=C2=A0 =C2=A0 =C2=A0discussion:____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0* wou= ld the=C2=A0draft be expanded to demonstrate how "the Path
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0Segment may be used to identify an SR-MPLS Policy, its
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0Candidate-Path (CP) or a SID List (SL)"?____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[Weiqiang] Y= es, It is necessary and=C2=A0we will add some text to
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0demonstrate = this in the future version. ____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0* as = many use cases for the Path Segment are related to OAM
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0operations, it would be helpful to expand on the use
>=C2=A0 =C2=A0 =C2=A0of GAL
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0and the Path Segment.____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0[Weiqiang] I= t is always helpful to have more use cases.
>=C2=A0 =C2=A0 =C2=A0However,
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0The GAL is u= sed today in MPLS-TP LSPs to flag the G-Ach
>=C2=A0 =C2=A0 =C2=A0and is
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0used for OAM= packets only while the Path segment is used for
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0data packets= for the each traffic flow. It is a little bit
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0different. _= ___
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Regards,____=
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Greg____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0__ __
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0On Thu, Feb = 14, 2019 at 1:12 AM Alexander Vainshtein
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<Alexande= r.Vainshtein@ecitele..com
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<mailto:<= a href=3D"mailto:Alexander.Vainshtein@ecitele.com" target=3D"_blank">Alexan= der.Vainshtein@ecitele.com
>=C2=A0 =C2=A0 =C2=A0<mailto:Alexander.Vainshtein@ecitele.com>>&= gt; wrote:____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0+1.____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0I have been following this draft from its -00
>=C2=A0 =C2=A0 =C2=A0revision. The
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0current revision has resolved most of the issues I (and
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0others) have been raised (e.g., elimination of excessive
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0options).____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 From my POV, in its current state the draft meets
>=C2=A0 =C2=A0 =C2=A0two basic
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0requirements for the WG adoption:____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A01.It addresses a real and relevant problem, namely
>=C2=A0 =C2=A0 =C2=A0the MPLS
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0Flow Identification problem discussed in general in
>=C2=A0 =C2=A0 =C2=A0RFC 8372
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0<https://tools.ietf.org/html/rfc8372> and scoped to<= br> >=C2=A0 =C2=A0 =C2=A0SR-MPLS
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0LSPs in this draft. Specifics of SR-MPLS include the
>=C2=A0 =C2=A0 =C2=A0need to
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0provide end-to-end liveness check that is one of the
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0requirements explicitly specified in Section 2 of RFC
>=C2=A0 =C2=A0 =C2=A08355
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0<https://tools.ietf.org/html/rfc8355>. ____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A02.It provides a reasonable (from my POV) approach to
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0solution of this problem.____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0I also concur with Stewart=E2=80=99s comment about strong
>=C2=A0 =C2=A0 =C2=A0similarity
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0between the approach taken in this draft for SR-MPLS and
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0generic work in progress on synonymous flow labels
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0
>=C2=A0 =C2=A0 =C2=A0 =C2=A0<https= ://tools.ietf.org/html/draft-ietf-mpls-sfl-framework-04>
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0that has been already adopted as a MPLS WG item.=C2=A0 To
>=C2=A0 =C2=A0 =C2=A0me this
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0is yet another indication that the draft should be
>=C2=A0 =C2=A0 =C2=A0adopted.____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0My 2c,____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0Sasha____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0Office: +972-39266302____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0Cell:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 +972-549266302____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0Email: Alexander.Vainshtein@ecitele.com
>=C2=A0 =C2=A0 =C2=A0<mailto:Alexander.Vainshtein@ecitele.com>
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0<mailto:Alexander.Vainshtein@ecitele.com
>=C2=A0 =C2=A0 =C2=A0<mailto:Alexander.Vainshtein@ecitele.com>>_= ___
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0____
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>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0-----Original Message-----
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0From: spring <spring-bounces@ietf.org
>=C2=A0 =C2=A0 =C2=A0<mailto:spring-bounces@ietf.org>
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0<mailto:= spring-bounces@ietf.org
>=C2=A0 =C2=A0 =C2=A0<mailto:spring-bounces@ietf.org>>> On Behalf Of S= tewart Bryant
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0Sent: Wednesday, February 13, 2019 12:48 PM
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0To: Loa Andersson <loa@pi..nu <mailto:loa@pi.nu
>=C2=A0 =C2=A0 =C2=A0<mailto:loa@pi.nu>>>;
>=C2=A0 =C2=A0 =C2=A0 > spring@ietf.org <mailto:spring@ietf.org> <mailto:spring@ietf.org
>=C2=A0 =C2=A0 =C2=A0<mailto:spring@ietf.org>>;
>=C2=A0 =C2=A0 =C2=A0 > draft-cheng-spring-mpls-path-segment@= ietf.org
>=C2=A0 =C2=A0 =C2=A0<mailto:draft-cheng-spring-mpls-path-seg= ment@ietf.org>
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0<mailto:draft-cheng-spring-mpls-path-segment@ietf.org
>=C2=A0 =C2=A0 =C2=A0<mailto:draft-cheng-spring-mpls-path-seg= ment@ietf.org>>
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0Subject: Re: [spring] to progress
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0draft-cheng-spring-mpls-path-segment____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0I have just read the draft and agree that it should be
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0adopted by the WG. It solves an important problem in
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0instrumenting and protecting an SR path.____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0It should be noted that we needed to do something very
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0similar in mainstream MPLS via the synonymous label work
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0which is already adopted. ____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0However SL did not address the SR case.. We therefore
>=C2=A0 =C2=A0 =C2=A0need
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0this path label work to be progressed.____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0- Stewart____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0On 10/02/2019 08:11, Loa Andersson wrote:____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0> Working Group,____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0> ____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0> I have reviewed
>=C2=A0 =C2=A0 =C2=A0draft-cheng-spring-mpls-path-segment and as far as = I ____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0> can see, it is ready for wg adoption.____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0> ____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0> There were some comments in Bangkok, but due to the
>=C2=A0 =C2=A0 =C2=A0many collisions ____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0> between working groups at that meeting I couldn't
>=C2=A0 =C2=A0 =C2=A0attend the SPRING ____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0> f2f.____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0> ____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0> The minutes are not clear, but as far as I
>=C2=A0 =C2=A0 =C2=A0understand, there is ____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0> nothing that can't be resolved in the wg process.____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0> ____
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0> /Loa____
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>=C2=A0 =C2=A0 =C2=A0--
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>=C2=A0 =C2=A0 =C2=A0Loa Andersson=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 email: loa@pi.nu <mailto:loa@pi.nu>
>=C2=A0 =C2=A0 =C2=A0Senior MPLS Expert
>=C2=A0 =C2=A0 =C2=A0Bronze Dragon Consulting=C2=A0 =C2=A0 =C2=A0 =C2=A0= =C2=A0 =C2=A0 =C2=A0phone: +46 739 81 21 64
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Loa Andersson=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0= =C2=A0 =C2=A0 =C2=A0 email: loa@pi.nu
Senior MPLS Expert
Bronze Dragon Consulting=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0pho= ne: +46 739 81 21 64
--000000000000a3e39c0582882e44-- From nobody Sat Feb 23 00:16:54 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 3F89C130E64; Sat, 23 Feb 2019 00:16:52 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: 0.601 X-Spam-Level: X-Spam-Status: No, score=0.601 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, URIBL_BLOCKED=0.001, URIBL_DBL_SPAM=2.5] autolearn=no autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id budA4k69tYxo; Sat, 23 Feb 2019 00:16:48 -0800 (PST) Received: from pipi.pi.nu (pipi.pi.nu [83.168.239.141]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 120411200B3; Sat, 23 Feb 2019 00:16:48 -0800 (PST) Received: from [192.168.1.20] (unknown [119.94.169.156]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: loa@pi.nu) by pipi.pi.nu (Postfix) with ESMTPSA id B56DF180157E; Sat, 23 Feb 2019 09:16:43 +0100 (CET) To: Greg Mirsky Cc: mpls@ietf.org, spring , Alexander Vainshtein , Weiqiang Cheng , Rakesh Gandhi , draft-cheng-spring-mpls-path-segment@ietf.org, Stewart Bryant References: <0980ce7c-047c-519f-e7d5-98d32b498482@pi.nu> <9419b7d7-87ef-151f-5ed8-b0f78c6e83af@gmail.com> <050301d4c590$445f5d50$cd1e17f0$@com> <9d7a2690-6ef4-438a-6ca8-0548ad2aca0e@pi.nu> <13cb42a8-e298-c3cc-d116-219f144f5357@pi.nu> From: Loa Andersson Message-ID: <886d0aeb-281e-984a-9c9d-645101d4d02b@pi.nu> Date: Sat, 23 Feb 2019 16:16:00 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.5.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit Archived-At: Subject: Re: [mpls] [spring] to progress draft-cheng-spring-mpls-path-segment X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 23 Feb 2019 08:16:52 -0000 Greg, On 2019-02-23 12:31, Greg Mirsky wrote: > Hi Loa, > another tunnel with the Path segment from node C is, in my view, very > close to SPME tunnel. The Path segment from C is needed because Path > segment from D is not known to the node C, cannot be associated with the > right SR-tunnel segment, i.e., tunnel B-C. The fate sharing may be > achieved by using exactly the same SIDs as in the A-D tunnel for the B-C > segment. And GAL is still BoS on B-C tunnel. Are we getting closer? Not sure, you lose me somewhere between the "B", "C", "D", "from" and "another". So let me check I was talking about So the stack transporting payload from B-C looks like this: +------------+ ~B->C SubPath~ +------------+ |s-PSID(B->C)| +------------+ | BSID(C->D) | +------------+ |e-PSID(A->D)| +------------+ figure 1 The "~" at the top means that there might be more than one label that can be popped or swapped, right? So the stack transporting GACh from B-C looks like this: +--------------+ ~ B->C SubPath ~ +--------------+ | GAL | +--------------+ | GACh info-1 | +--------------+ | GACh info-2 | +--------------+ figure 2 Now my question is the "B->C SubPath" in the first figure identical to the "B->C SubPath" in the second figure? Now -- > > Regards, > Greg > > On Fri, Feb 22, 2019 at 8:15 PM Loa Andersson > wrote: > > Greg, > > We are close, though I hope the rules are that GAL is bottom of stack, > and that a packet with a GACh does not carry user payload. > > I should have said that "if you want a GACg for the > > I don't understand why we need a "new" SR tunnel, the GAL/GACh can > ride with the GAL as bottom of stack with the label stack for > Sub-path(B->C), right? If you put it on "another" tunnel, how do > you guarantee fate sharing? > > /Loa > > /Loa > > On 2019-02-23 11:55, Greg Mirsky wrote: > > Hi Loa, > > I think it will be similar to SPME and we'll need to have another > > SR-tunnel B-C with its own Path segment allocated by node C. But GAL > > will still be BoS. > > > > Regards, > > Greg. > > > > On Fri, Feb 22, 2019 at 6:15 PM Loa Andersson > > >> wrote: > > > >     Rakesh, authors, > > > >     I have not been thinking about this too much. But if you look > at fig 2 > >     of draft-cheng-spring-mpls-path-segment, and you need a GACh > between > >     A and D, I'd say that the GAL will be at the bottom of stack. > > > >     What if you need the CACh for the sub-path B to C, where will > the GAL > >     go? > > > >     /Loa > > > > > > > >     On 2019-02-23 09:25, Rakesh Gandhi wrote: > >      > Hi Greg, > >      > > >      > I am not sure if the question has been answered. I would think > >     GAL is at > >      > the bottom of the label stack. > >      > > >      > Thanks, > >      > Rakesh > >      > > >      > > >      > On Sat, Feb 16, 2019 at 4:24 PM Greg Mirsky > >      > > > >      > >>> wrote: > >      > > >      >     Hi Weiqiang Cheng, > >      >     thank you for your expedient response to my questions. The > >     document > >      >     states that one of the use cases for the Path segment > is to > >     be used > >      >     as a performance, packet loss and/or delay, > measurement session > >      >     identifier. I think that RFC 6374 is the most suitable > for PM > >     OAM in > >      >     SR-MPLS environment. Of course, the type of the > >     encapsulated message > >      >     can be identified using the destination UDP port > number with > >     IP/UDP > >      >     encapsulation. But another option is to use G-ACh > encapsulation. > >      >     That would require the use of GAL. And that is how I've > >     arrived at > >      >     my original question (I should have explained it > better, my > >     apologies): > >      > > >      >         How the Path segment and GAL are placed relative > to each > >     other > >      >         in the SR-MPLS label stack? > >      > > >      >     Regards, > >      >     Greg > >      > > >      >     On Fri, Feb 15, 2019 at 4:40 PM Weiqiang Cheng > >      >      > >      > > >      >      > >      >>> wrote: > >      > > >      >         Hi Greg,____ > >      > > >      >         Thanks a lot for your comments.____ > >      > > >      >         My comments are in-line.____ > >      > > >      >         __ __ > >      > > >      >         B.R.____ > >      > > >      >         Weiqiang Cheng____ > >      > > >      >         __ __ > >      > > >      >         *发件人:*Greg Mirsky [mailto:gregimirsky@gmail.com > > >     > > >      >          > >     >>] > >      >         *发送时间:*2019年2月15日3:37 > >      >         *收件人:*Alexander Vainshtein > >      >         *抄送:*spring@ietf..org > > > >      > >>; Stewart Bryant; > >      > draft-cheng-spring-mpls-path-segment@ietf.org > > >      > > >      > >   > >      >>; > >      > mpls@ietf.org > > >     >>; Loa Andersson > >      >         *主题:*Re: [spring] to progress > >      >         draft-cheng-spring-mpls-path-segment____ > >      > > >      >         __ __ > >      > > >      >         Dear All,____ > >      > > >      >         I concur with all what has been said in support of the > >     adoption > >      >         of this draft by SPRING WG. The document is > well-written, > >      >         addresses the real problem in SR-MPLS, and the > proposed > >     solution > >      >         is technically viable.____ > >      > > >      >         My comments and questions are entirely for further > >     discussion:____ > >      > > >      >           * would the draft be expanded to demonstrate how > "the Path > >      >             Segment may be used to identify an SR-MPLS > Policy, its > >      >             Candidate-Path (CP) or a SID List (SL)"?____ > >      > > >      >         [Weiqiang] Yes, It is necessary and we will add > some text to > >      >         demonstrate this in the future version. ____ > >      > > >      >           * as many use cases for the Path Segment are > related to OAM > >      >             operations, it would be helpful to expand on > the use > >     of GAL > >      >             and the Path Segment.____ > >      > > >      >         [Weiqiang] It is always helpful to have more use > cases. > >     However, > >      >         The GAL is used today in MPLS-TP LSPs to flag the > G-Ach > >     and is > >      >         used for OAM packets only while the Path segment > is used for > >      >         data packets for the each traffic flow. It is a > little bit > >      >         different. ____ > >      > > >      >         Regards,____ > >      > > >      >         Greg____ > >      > > >      >         __ __ > >      > > >      >         On Thu, Feb 14, 2019 at 1:12 AM Alexander Vainshtein > >      >          >      >          > >      >>> wrote:____ > >      > > >      >             +1.____ > >      > > >      >             ____ > >      > > >      >             I have been following this draft from its -00 > >     revision. The > >      >             current revision has resolved most of the > issues I (and > >      >             others) have been raised (e.g., elimination of > excessive > >      >             options).____ > >      > > >      >             ____ > >      > > >      >              From my POV, in its current state the draft meets > >     two basic > >      >             requirements for the WG adoption:____ > >      > > >      >             1.It addresses a real and relevant problem, namely > >     the MPLS > >      >             Flow Identification problem discussed in > general in > >     RFC 8372 > >      >              and > scoped to > >     SR-MPLS > >      >             LSPs in this draft. Specifics of SR-MPLS > include the > >     need to > >      >             provide end-to-end liveness check that is one > of the > >      >             requirements explicitly specified in Section 2 > of RFC > >     8355 > >      >             . ____ > >      > > >      >             2.It provides a reasonable (from my POV) > approach to > >      >               solution of this problem.____ > >      > > >      >             ____ > >      > > >      >             I also concur with Stewart’s comment about strong > >     similarity > >      >             between the approach taken in this draft for > SR-MPLS and > >      >             generic work in progress on synonymous flow labels > >      > > >        > >      >             that has been already adopted as a MPLS WG > item.  To > >     me this > >      >             is yet another indication that the draft should be > >     adopted.____ > >      > > >      >             ____ > >      > > >      >             My 2c,____ > >      > > >      >             Sasha____ > >      > > >      >             ____ > >      > > >      >             Office: +972-39266302____ > >      > > >      >             Cell:      +972-549266302____ > >      > > >      >             Email: Alexander.Vainshtein@ecitele.com > > >      > > >      >              > >      >>____ > >      > > >      >             ____ > >      > > >      >             -----Original Message----- > >      >             From: spring > >     > > >      >              > >      >>> On Behalf Of Stewart Bryant > >      >             Sent: Wednesday, February 13, 2019 12:48 PM > >      >             To: Loa Andersson > >     >>>; > >      > spring@ietf.org > > > > >     >>; > >      > draft-cheng-spring-mpls-path-segment@ietf.org > > >      > > >      > >   > >      >> > >      >             Subject: Re: [spring] to progress > >      >             draft-cheng-spring-mpls-path-segment____ > >      > > >      >             ____ > >      > > >      >             I have just read the draft and agree that it > should be > >      >             adopted by the WG. It solves an important > problem in > >      >             instrumenting and protecting an SR path.____ > >      > > >      >             ____ > >      > > >      >             It should be noted that we needed to do > something very > >      >             similar in mainstream MPLS via the synonymous > label work > >      >             which is already adopted. ____ > >      > > >      >             However SL did not address the SR case.. We > therefore > >     need > >      >             this path label work to be progressed.____ > >      > > >      >             ____ > >      > > >      >             - Stewart____ > >      > > >      >             ____ > >      > > >      >             On 10/02/2019 08:11, Loa Andersson wrote:____ > >      > > >      >             > Working Group,____ > >      > > >      >             > ____ > >      > > >      >             > I have reviewed > >     draft-cheng-spring-mpls-path-segment and as far as I ____ > >      > > >      >             > can see, it is ready for wg adoption.____ > >      > > >      >             > ____ > >      > > >      >             > There were some comments in Bangkok, but due > to the > >     many collisions ____ > >      > > >      >             > between working groups at that meeting I > couldn't > >     attend the SPRING ____ > >      > > >      >             > f2f.____ > >      > > >      >             > ____ > >      > > >      >             > The minutes are not clear, but as far as I > >     understand, there is ____ > >      > > >      >             > nothing that can't be resolved in the wg > process.____ > >      > > >      >             > ____ > >      > > >      >             > /Loa____ > >      > > >      >             ____ > >      > > >      > >  ___________________________________________________ > >      > > >      >             spring mailing list____ > >      > > >      > spring@ietf.org > > > > >     >>____ > >      > > >      > https://www..ietf.org/mailman/listinfo/spring____ > > >      > >      > > >      > > >      > > > >  ___________________________________________________________________________ > >      > > >      >             This e-mail message is intended for the recipient > >     only and > >      >             contains information which is > >      >             CONFIDENTIAL and which may be proprietary to ECI > >     Telecom. If > >      >             you have received this > >      >             transmission in error, please inform us by e-mail, > >     phone or > >      >             fax, and then delete the original > >      >             and all copies thereof. > >      > > > >  _______________________________________________________________________________ > >      > > >      >             _______________________________________________ > >      >             spring mailing list > >      > spring@ietf.org > > > > >     >> > >      > https://www.ietf.org/mailman/listinfo/spring____ > >      > > >      >     _______________________________________________ > >      >     spring mailing list > >      > spring@ietf.org > > > > >     >> > >      > https://www.ietf.org/mailman/listinfo/spring > >      > > > > >     -- > > > > > >     Loa Andersson                        email: loa@pi.nu > > > >     Senior MPLS Expert > >     Bronze Dragon Consulting             phone: +46 739 81 21 64 > > > > > > _______________________________________________ > > spring mailing list > > spring@ietf.org > > https://www.ietf.org/mailman/listinfo/spring > > > > -- > > > Loa Andersson                        email: loa@pi.nu > Senior MPLS Expert > Bronze Dragon Consulting             phone: +46 739 81 21 64 > > > _______________________________________________ > spring mailing list > spring@ietf.org > https://www.ietf.org/mailman/listinfo/spring > -- Loa Andersson email: loa@pi.nu Senior MPLS Expert Bronze Dragon Consulting phone: +46 739 81 21 64 From nobody Sat Feb 23 08:17:39 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 687A912958B; 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Sat, 23 Feb 2019 08:17:23 -0800 (PST) MIME-Version: 1.0 References: <0980ce7c-047c-519f-e7d5-98d32b498482@pi.nu> <9419b7d7-87ef-151f-5ed8-b0f78c6e83af@gmail.com> <050301d4c590$445f5d50$cd1e17f0$@com> <9d7a2690-6ef4-438a-6ca8-0548ad2aca0e@pi.nu> <13cb42a8-e298-c3cc-d116-219f144f5357@pi.nu> <886d0aeb-281e-984a-9c9d-645101d4d02b@pi.nu> In-Reply-To: <886d0aeb-281e-984a-9c9d-645101d4d02b@pi.nu> From: Greg Mirsky Date: Sat, 23 Feb 2019 08:17:15 -0800 Message-ID: To: Loa Andersson Cc: mpls@ietf.org, spring , Alexander Vainshtein , Weiqiang Cheng , Rakesh Gandhi , draft-cheng-spring-mpls-path-segment@ietf.org, Stewart Bryant Content-Type: multipart/alternative; boundary="000000000000e378140582920a57" Archived-At: Subject: Re: [mpls] [spring] to progress draft-cheng-spring-mpls-path-segment X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 23 Feb 2019 16:17:31 -0000 --000000000000e378140582920a57 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Loa, picture is worth a thousand words, thank you! I think that OAM packet on A-D A-D tunnel will be like this: Couple notes: - not sure we need s-PSID(B->C) (assuming it is Path SID for the B-C segment); - encapsulation for an OAM packet on the segment B-C must include s-PSID(B->C); - I agree that B->C SubPath must be the same in both cases. Regards, Greg On Sat, Feb 23, 2019 at 12:16 AM Loa Andersson wrote: > Greg, > > > > On 2019-02-23 12:31, Greg Mirsky wrote: > > Hi Loa, > > another tunnel with the Path segment from node C is, in my view, very > > close to SPME tunnel. The Path segment from C is needed because Path > > segment from D is not known to the node C, cannot be associated with th= e > > right SR-tunnel segment, i.e., tunnel B-C. The fate sharing may be > > achieved by using exactly the same SIDs as in the A-D tunnel for the B-= C > > segment. And GAL is still BoS on B-C tunnel. Are we getting closer? > > Not sure, you lose me somewhere between the "B", "C", "D", "from" and > "another". > > So let me check I was talking about > > So the stack transporting payload from B-C looks like this: > > +------------+ > ~B->C SubPath~ > +------------+ > |s-PSID(B->C)| > +------------+ > | BSID(C->D) | > +------------+ > |e-PSID(A->D)| > +------------+ > figure 1 > > The "~" at the top means that there might be more than one label that > can be popped or swapped, right? > > So the stack transporting GACh from B-C looks like this: > > +--------------+ > ~ B->C SubPath ~ > +--------------+ > | GAL | > +--------------+ > | GACh info-1 | > +--------------+ > | GACh info-2 | > +--------------+ > figure 2 > > Now my question is the "B->C SubPath" in the first figure identical > to the "B->C SubPath" in the second figure? > Now > -- > > > > > > > Regards, > > Greg > > > > On Fri, Feb 22, 2019 at 8:15 PM Loa Andersson > > wrote: > > > > Greg, > > > > We are close, though I hope the rules are that GAL is bottom of > stack, > > and that a packet with a GACh does not carry user payload. > > > > I should have said that "if you want a GACg for the > > > > I don't understand why we need a "new" SR tunnel, the GAL/GACh can > > ride with the GAL as bottom of stack with the label stack for > > Sub-path(B->C), right? If you put it on "another" tunnel, how do > > you guarantee fate sharing? > > > > /Loa > > > > /Loa > > > > On 2019-02-23 11:55, Greg Mirsky wrote: > > > Hi Loa, > > > I think it will be similar to SPME and we'll need to have anothe= r > > > SR-tunnel B-C with its own Path segment allocated by node C. But > GAL > > > will still be BoS. > > > > > > Regards, > > > Greg. > > > > > > On Fri, Feb 22, 2019 at 6:15 PM Loa Andersson > > > > >> wrote: > > > > > > Rakesh, authors, > > > > > > I have not been thinking about this too much. But if you loo= k > > at fig 2 > > > of draft-cheng-spring-mpls-path-segment, and you need a GACh > > between > > > A and D, I'd say that the GAL will be at the bottom of stack= . > > > > > > What if you need the CACh for the sub-path B to C, where wil= l > > the GAL > > > go? > > > > > > /Loa > > > > > > > > > > > > On 2019-02-23 09:25, Rakesh Gandhi wrote: > > > > Hi Greg, > > > > > > > > I am not sure if the question has been answered. I would > think > > > GAL is at > > > > the bottom of the label stack. > > > > > > > > Thanks, > > > > Rakesh > > > > > > > > > > > > On Sat, Feb 16, 2019 at 4:24 PM Greg Mirsky > > > > > > > > > > > > >>> wrote: > > > > > > > > Hi Weiqiang Cheng, > > > > thank you for your expedient response to my questions= . > The > > > document > > > > states that one of the use cases for the Path segment > > is to > > > be used > > > > as a performance, packet loss and/or delay, > > measurement session > > > > identifier. I think that RFC 6374 is the most suitabl= e > > for PM > > > OAM in > > > > SR-MPLS environment. Of course, the type of the > > > encapsulated message > > > > can be identified using the destination UDP port > > number with > > > IP/UDP > > > > encapsulation. But another option is to use G-ACh > > encapsulation. > > > > That would require the use of GAL. And that is how I'= ve > > > arrived at > > > > my original question (I should have explained it > > better, my > > > apologies): > > > > > > > > How the Path segment and GAL are placed relative > > to each > > > other > > > > in the SR-MPLS label stack? > > > > > > > > Regards, > > > > Greg > > > > > > > > On Fri, Feb 15, 2019 at 4:40 PM Weiqiang Cheng > > > > > > > > > > > > > > > > > > > >>> wrote: > > > > > > > > Hi Greg,____ > > > > > > > > Thanks a lot for your comments.____ > > > > > > > > My comments are in-line.____ > > > > > > > > __ __ > > > > > > > > B.R.____ > > > > > > > > Weiqiang Cheng____ > > > > > > > > __ __ > > > > > > > > *=E5=8F=91=E4=BB=B6=E4=BA=BA:*Greg Mirsky [mailto= :gregimirsky@gmail.com > > > > > = > > > > > > > > > >>>] > > > > *=E5=8F=91=E9=80=81=E6=97=B6=E9=97=B4:*2019=E5=B9= =B42=E6=9C=8815=E6=97=A53:37 > > > > *=E6=94=B6=E4=BB=B6=E4=BA=BA:*Alexander Vainshtei= n > > > > *=E6=8A=84=E9=80=81:*spring@ietf..org > > > > > > > > >>; Stewart Bryant; > > > > draft-cheng-spring-mpls-path-segment@ietf.org > > > > > > > > > > > > > > > > > > >>; > > > > mpls@ietf.org > > > > > >>; Loa Andersso= n > > > > *=E4=B8=BB=E9=A2=98:*Re: [spring] to progress > > > > draft-cheng-spring-mpls-path-segment____ > > > > > > > > __ __ > > > > > > > > Dear All,____ > > > > > > > > I concur with all what has been said in support o= f > the > > > adoption > > > > of this draft by SPRING WG. The document is > > well-written, > > > > addresses the real problem in SR-MPLS, and the > > proposed > > > solution > > > > is technically viable.____ > > > > > > > > My comments and questions are entirely for furthe= r > > > discussion:____ > > > > > > > > * would the draft be expanded to demonstrate ho= w > > "the Path > > > > Segment may be used to identify an SR-MPLS > > Policy, its > > > > Candidate-Path (CP) or a SID List (SL)"?____ > > > > > > > > [Weiqiang] Yes, It is necessary and we will add > > some text to > > > > demonstrate this in the future version. ____ > > > > > > > > * as many use cases for the Path Segment are > > related to OAM > > > > operations, it would be helpful to expand on > > the use > > > of GAL > > > > and the Path Segment.____ > > > > > > > > [Weiqiang] It is always helpful to have more use > > cases. > > > However, > > > > The GAL is used today in MPLS-TP LSPs to flag the > > G-Ach > > > and is > > > > used for OAM packets only while the Path segment > > is used for > > > > data packets for the each traffic flow. It is a > > little bit > > > > different. ____ > > > > > > > > Regards,____ > > > > > > > > Greg____ > > > > > > > > __ __ > > > > > > > > On Thu, Feb 14, 2019 at 1:12 AM Alexander > Vainshtein > > > > > > > > > > > > >>> wrote:____ > > > > > > > > +1.____ > > > > > > > > ____ > > > > > > > > I have been following this draft from its -00 > > > revision. The > > > > current revision has resolved most of the > > issues I (and > > > > others) have been raised (e.g., elimination o= f > > excessive > > > > options).____ > > > > > > > > ____ > > > > > > > > From my POV, in its current state the draft > meets > > > two basic > > > > requirements for the WG adoption:____ > > > > > > > > 1.It addresses a real and relevant problem, > namely > > > the MPLS > > > > Flow Identification problem discussed in > > general in > > > RFC 8372 > > > > and > > scoped to > > > SR-MPLS > > > > LSPs in this draft. Specifics of SR-MPLS > > include the > > > need to > > > > provide end-to-end liveness check that is one > > of the > > > > requirements explicitly specified in Section = 2 > > of RFC > > > 8355 > > > > . ____ > > > > > > > > 2.It provides a reasonable (from my POV) > > approach to > > > > solution of this problem.____ > > > > > > > > ____ > > > > > > > > I also concur with Stewart=E2=80=99s comment = about > strong > > > similarity > > > > between the approach taken in this draft for > > SR-MPLS and > > > > generic work in progress on synonymous flow > labels > > > > > > > < > https://tools.ietf.org/html/draft-ietf-mpls-sfl-framework-04> > > > > that has been already adopted as a MPLS WG > > item. To > > > me this > > > > is yet another indication that the draft > should be > > > adopted.____ > > > > > > > > ____ > > > > > > > > My 2c,____ > > > > > > > > Sasha____ > > > > > > > > ____ > > > > > > > > Office: +972-39266302____ > > > > > > > > Cell: +972-549266302____ > > > > > > > > Email: Alexander.Vainshtein@ecitele.com > > > > > > > > > > > > > > > > >>____ > > > > > > > > ____ > > > > > > > > -----Original Message----- > > > > From: spring > > > > spring-bounces@ietf.org>> > > > > > > > > > >>> On Behalf Of Stewart Bryant > > > > Sent: Wednesday, February 13, 2019 12:48 PM > > > > To: Loa Andersson > > > > >>>; > > > > spring@ietf.org > > > > > > > > >>; > > > > draft-cheng-spring-mpls-path-segment@ietf.org > > > > > > > > > > > > > > > > > > >> > > > > Subject: Re: [spring] to progress > > > > draft-cheng-spring-mpls-path-segment____ > > > > > > > > ____ > > > > > > > > I have just read the draft and agree that it > > should be > > > > adopted by the WG. It solves an important > > problem in > > > > instrumenting and protecting an SR path.____ > > > > > > > > ____ > > > > > > > > It should be noted that we needed to do > > something very > > > > similar in mainstream MPLS via the synonymous > > label work > > > > which is already adopted. ____ > > > > > > > > However SL did not address the SR case.. We > > therefore > > > need > > > > this path label work to be progressed.____ > > > > > > > > ____ > > > > > > > > - Stewart____ > > > > > > > > ____ > > > > > > > > On 10/02/2019 08:11, Loa Andersson wrote:____ > > > > > > > > > Working Group,____ > > > > > > > > > ____ > > > > > > > > > I have reviewed > > > draft-cheng-spring-mpls-path-segment and as far as I ____ > > > > > > > > > can see, it is ready for wg adoption.____ > > > > > > > > > ____ > > > > > > > > > There were some comments in Bangkok, but du= e > > to the > > > many collisions ____ > > > > > > > > > between working groups at that meeting I > > couldn't > > > attend the SPRING ____ > > > > > > > > > f2f.____ > > > > > > > > > ____ > > > > > > > > > The minutes are not clear, but as far as I > > > understand, there is ____ > > > > > > > > > nothing that can't be resolved in the wg > > process.____ > > > > > > > > > ____ > > > > > > > > > /Loa____ > > > > > > > > ____ > > > > > > > > > > ___________________________________________________ > > > > > > > > spring mailing list____ > > > > > > > > spring@ietf.org > > > > > > > > >>____ > > > > > > > > https://www..ietf.org/mailman/listinfo/spring____ > > > > > > > > > > > > > > > > > > > > > > > ________________________________________________________________________= ___ > > > > > > > > This e-mail message is intended for the > recipient > > > only and > > > > contains information which is > > > > CONFIDENTIAL and which may be proprietary to > ECI > > > Telecom. If > > > > you have received this > > > > transmission in error, please inform us by > e-mail, > > > phone or > > > > fax, and then delete the original > > > > and all copies thereof. > > > > > > > > > > ________________________________________________________________________= _______ > > > > > > > > _____________________________________________= __ > > > > spring mailing list > > > > spring@ietf.org > > > > > > > > >> > > > > https://www.ietf.org/mailman/listinfo/spring____ > > > > > > > > _______________________________________________ > > > > spring mailing list > > > > spring@ietf.org > > > > > > > > >> > > > > https://www.ietf.org/mailman/listinfo/spring > > > > > > > > > > -- > > > > > > > > > Loa Andersson email: loa@pi.nu > > > > > > Senior MPLS Expert > > > Bronze Dragon Consulting phone: +46 739 81 21 64 > > > > > > > > > _______________________________________________ > > > spring mailing list > > > spring@ietf.org > > > https://www.ietf.org/mailman/listinfo/spring > > > > > > > -- > > > > > > Loa Andersson email: loa@pi.nu loa@pi.nu> > > Senior MPLS Expert > > Bronze Dragon Consulting phone: +46 739 81 21 64 > > > > > > _______________________________________________ > > spring mailing list > > spring@ietf.org > > https://www.ietf.org/mailman/listinfo/spring > > > > -- > > > Loa Andersson email: loa@pi.nu > Senior MPLS Expert > Bronze Dragon Consulting phone: +46 739 81 21 64 > --000000000000e378140582920a57 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi Loa,
picture is worth a thousand w= ords, thank you! I think that OAM packet on A-D A-D tunnel will be like thi= s:
Couple notes:
  • not sure we need=C2=A0 s-PSID(B->C) (assuming it is Path SID for the B-C segment);
  • enca= psulation for an OAM packet on the segment B-C must include=C2=A0 s-PSID(B->C);
  • I agree that=C2=A0 B->C SubPath must be the same in both cases.
<= div>Regards,
Greg

On Sat, Feb 23, 2019 at 12:16 AM Loa Anders= son <loa@pi.nu> wrote:
Greg,



On 2019-02-23 12:31, Greg Mirsky wrote:
> Hi Loa,
> another tunnel with the Path segment from node C is, in my view, very =
> close to SPME tunnel. The Path segment from C is needed because Path <= br> > segment from D is not known to the node C, cannot be associated with t= he
> right SR-tunnel segment, i.e., tunnel B-C. The fate sharing may be > achieved by using exactly the same SIDs as in the A-D tunnel for the B= -C
> segment. And GAL is still BoS on B-C tunnel. Are we getting closer?
Not sure, you lose me somewhere between the "B", "C", &= quot;D", "from" and
"another".

So let me check I was talking about

So the stack transporting payload from B-C looks like this:

=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0+------------+
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0~B->C SubPath~
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0+------------+
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0|s-PSID(B->C)|
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0+------------+
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0| BSID(C->D) |
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0+------------+
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0|e-PSID(A->D)|
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0+------------+
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 figure 1

The "~" at the top means that there might be more than one label = that
can be popped or swapped, right?

So the stack transporting GACh from B-C looks like this:

=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0+--------------+
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0~ B->C SubPath ~
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0+--------------+
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0|=C2=A0 =C2=A0 =C2=A0GAL=C2=A0 =C2=A0 =C2=A0 |
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0+--------------+
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0|=C2=A0 GACh info-1 |
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0+--------------+
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0|=C2=A0 GACh info-2 |
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0+--------------+
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 figure 2

Now my question is the "B->C SubPath" in the first figure iden= tical
to the "B->C SubPath" in the second figure?
Now
--



>
> Regards,
> Greg
>
> On Fri, Feb 22, 2019 at 8:15 PM Loa Andersson <loa@pi.nu
> <mailto:loa@pi.nu>> wrote:
>
>=C2=A0 =C2=A0 =C2=A0Greg,
>
>=C2=A0 =C2=A0 =C2=A0We are close, though I hope the rules are that GAL = is bottom of stack,
>=C2=A0 =C2=A0 =C2=A0and that a packet with a GACh does not carry user p= ayload.
>
>=C2=A0 =C2=A0 =C2=A0I should have said that "if you want a GACg fo= r the
>
>=C2=A0 =C2=A0 =C2=A0I don't understand why we need a "new"= ; SR tunnel, the GAL/GACh can
>=C2=A0 =C2=A0 =C2=A0ride with the GAL as bottom of stack with the label= stack for
>=C2=A0 =C2=A0 =C2=A0Sub-path(B->C), right? If you put it on "an= other" tunnel, how do
>=C2=A0 =C2=A0 =C2=A0you guarantee fate sharing?
>
>=C2=A0 =C2=A0 =C2=A0/Loa
>
>=C2=A0 =C2=A0 =C2=A0/Loa
>
>=C2=A0 =C2=A0 =C2=A0On 2019-02-23 11:55, Greg Mirsky wrote:
>=C2=A0 =C2=A0 =C2=A0 > Hi Loa,
>=C2=A0 =C2=A0 =C2=A0 > I think it will be similar to SPME and we'= ;ll need to have another
>=C2=A0 =C2=A0 =C2=A0 > SR-tunnel B-C with its own Path segment alloc= ated by node C. But GAL
>=C2=A0 =C2=A0 =C2=A0 > will still be BoS.
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 > Regards,
>=C2=A0 =C2=A0 =C2=A0 > Greg.
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 > On Fri, Feb 22, 2019 at 6:15 PM Loa Andersson= <
loa@pi.nu
>=C2=A0 =C2=A0 =C2=A0<mailto:loa@pi.nu>
>=C2=A0 =C2=A0 =C2=A0 > <mailto:loa@pi.nu <mailto:loa@pi.nu>>> wrote:
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0Rakesh, authors,
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0I have not been thinking a= bout this too much. But if you look
>=C2=A0 =C2=A0 =C2=A0at fig 2
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0of draft-cheng-spring-mpls= -path-segment, and you need a GACh
>=C2=A0 =C2=A0 =C2=A0between
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0A and D, I'd say that = the GAL will be at the bottom of stack.
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0What if you need the CACh = for the sub-path B to C, where will
>=C2=A0 =C2=A0 =C2=A0the GAL
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0go?
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0/Loa
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0On 2019-02-23 09:25, Rakes= h Gandhi wrote:
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 > Hi Greg,
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 > I am not sure if the= question has been answered. I would think
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0GAL is at
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 > the bottom of the la= bel stack.
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 > Thanks,
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 > Rakesh
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 > On Sat, Feb 16, 2019= at 4:24 PM Greg Mirsky
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0<gregimirsky@gmail.com <mailto:<= a href=3D"mailto:gregimirsky@gmail.com" target=3D"_blank">gregimirsky@gmail= .com>
>=C2=A0 =C2=A0 =C2=A0<mailto:gregimirsky@gmail.com <mailto:gregimirsky@gmail.com>> >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 > <mailto:gregimirsky@gmail.com
>=C2=A0 =C2=A0 =C2=A0<mailto:
gregimirsky@gmail.com> <mailto:gregimirsky@gmail.com
>=C2=A0 =C2=A0 =C2=A0<mailto:gregimirsky@gmail.com>>>> wrote:
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0H= i=C2=A0Weiqiang Cheng,
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0t= hank you for your expedient response to my questions. The
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0document
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0s= tates that one of the use cases for the Path segment
>=C2=A0 =C2=A0 =C2=A0is to
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0be used
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0a= s a performance, packet loss and/or delay,
>=C2=A0 =C2=A0 =C2=A0measurement session
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0i= dentifier. I think that RFC 6374 is the most suitable
>=C2=A0 =C2=A0 =C2=A0for PM
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0OAM in
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0S= R-MPLS environment. Of course, the type of the
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0encapsulated=C2=A0message<= br> >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0c= an be identified using the destination UDP port
>=C2=A0 =C2=A0 =C2=A0number with
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0IP/UDP
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0e= ncapsulation. But another option is to use G-ACh
>=C2=A0 =C2=A0 =C2=A0encapsulation.
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0T= hat would require the use of GAL. And that is how I've
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0arrived at
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0m= y original question (I should have explained it
>=C2=A0 =C2=A0 =C2=A0better, my
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0apologies):
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0How the Path segment and GAL are placed relative
>=C2=A0 =C2=A0 =C2=A0to each
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0other
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0in the SR-MPLS label stack?
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0R= egards,
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0G= reg
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0O= n Fri, Feb 15, 2019 at 4:40 PM Weiqiang Cheng
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0&= lt;cheng= weiqiang@chinamobile.com
>=C2=A0 =C2=A0 =C2=A0<mailto:chengweiqiang@chinamobile.com>
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0<mailto:chengweiqiang@chinamobi= le.com
>=C2=A0 =C2=A0 =C2=A0<mailto:chengweiqiang@chinamobile.com>>
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0&= lt;mailto:chengweiqiang@chinamobile.com
>=C2=A0 =C2=A0 =C2=A0<mailto:chengweiqiang@chinamobile.com>
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0<mailto:chengweiqiang@chinamobi= le.com
>=C2=A0 =C2=A0 =C2=A0<mailto:chengweiqiang@chinamobile.com>>>>= ; wrote:
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0Hi Greg,____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0Thanks a lot for your comments.____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0My comments are in-line.____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0__ __
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0B.R.____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0Weiqiang Cheng____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0__ __
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0*=E5=8F=91=E4=BB=B6=E4=BA=BA:*Greg Mirsky [mailto:gregimirsky@gmail.com >=C2=A0 =C2=A0 =C2=A0<mailto:gregimirsky@gmail..com>
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0<mailto:gregimirsky@gmail.com <m= ailto:gregimirsk= y@gmail.com>>
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0<mailto:gregimirsky@gmail..com
>=C2=A0 =C2=A0 =C2=A0<mailto:gregimirsky@gmail.com>
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0<mailto:gregimirsky@gmail.com <m= ailto:gregimirsk= y@gmail.com>>>]
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0*=E5=8F=91=E9=80=81=E6=97=B6=E9=97=B4:*2019=E5=B9=B42=E6=9C=88= 15=E6=97=A53:37
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0*=E6=94=B6=E4=BB=B6=E4=BA=BA:*Alexander Vainshtein
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0*=E6=8A=84=E9=80=81:*spring@ietf..org <mailto:spring@ietf.org>
>=C2=A0 =C2=A0 =C2=A0<mailto:spring@ietf.org <mailto:spring@ietf.org>>
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0<mailto:spring@ietf.org <mailto:spring@ietf.org>
>=C2=A0 =C2=A0 =C2=A0<mailto:spring@ietf.org <mailto:spring@ietf.org>>>; Stewart Bryant;
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 > draft-cheng-= spring-mpls-path-segment@ietf.org
>=C2=A0 =C2=A0 =C2=A0<mailto:draft-cheng-spring-mpls-path-seg= ment@ietf.org>
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0<mailto:draft-c= heng-spring-mpls-path-segment@ietf.org
>=C2=A0 =C2=A0 =C2=A0<mailto:draft-cheng-spring-mpls-path-seg= ment@ietf.org>>
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0
>=C2=A0 =C2=A0 =C2=A0 =C2=A0<mailto:draft-cheng-spring-mpls-p= ath-segment@ietf.org
>=C2=A0 =C2=A0 =C2=A0<mailto:draft-cheng-spring-mpls-path-seg= ment@ietf.org>
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0<mailto:draft-c= heng-spring-mpls-path-segment@ietf.org
>=C2=A0 =C2=A0 =C2=A0<mailto:draft-cheng-spring-mpls-path-seg= ment@ietf.org>>>;
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 > mpls@ietf.org <mailto:mpls@ietf.org> <mailto:mpls@ietf.org
>=C2=A0 =C2=A0 =C2=A0<mailto:mpls@ietf.org>> <mailto:mpls@ietf.org <mailto:mpls@ietf.org>
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0<mailto:mpls@ietf.org <mailto:mpls@ietf.org>>>; Loa= Andersson
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0*=E4=B8=BB=E9=A2=98:*Re: [spring] to progress
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0draft-cheng-spring-mpls-path-segment____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0__ __
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0Dear All,____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0I concur with all what has been said in support of the
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0adoption
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0of this draft by SPRING WG. The document is
>=C2=A0 =C2=A0 =C2=A0well-written,
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0addresses the real problem in SR-MPLS, and the
>=C2=A0 =C2=A0 =C2=A0proposed
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0solution
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0is technically viable.____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0My comments and questions are entirely for further
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0discussion:____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0* would the=C2=A0draft be expanded to demonstrate how >=C2=A0 =C2=A0 =C2=A0"the Path
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0Segment may be used to identify an SR-MPLS
>=C2=A0 =C2=A0 =C2=A0Policy, its
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0Candidate-Path (CP) or a SID List (SL)"?___= _
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0[Weiqiang] Yes, It is necessary and=C2=A0we will add
>=C2=A0 =C2=A0 =C2=A0some text to
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0demonstrate this in the future version. ____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0* as many use cases for the Path Segment are
>=C2=A0 =C2=A0 =C2=A0related to OAM
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0operations, it would be helpful to expand on
>=C2=A0 =C2=A0 =C2=A0the use
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0of GAL
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0and the Path Segment.____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0[Weiqiang] It is always helpful to have more use
>=C2=A0 =C2=A0 =C2=A0cases.
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0However,
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0The GAL is used today in MPLS-TP LSPs to flag the
>=C2=A0 =C2=A0 =C2=A0G-Ach
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0and is
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0used for OAM packets only while the Path segment
>=C2=A0 =C2=A0 =C2=A0is used for
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0data packets for the each traffic flow. It is a
>=C2=A0 =C2=A0 =C2=A0little bit
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0different. ____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0Regards,____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0Greg____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0__ __
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0On Thu, Feb 14, 2019 at 1:12 AM Alexander Vainshtein
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0<Alexander.Vainshtein@ecitele..com
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0<mailto:Alexander.Vainshtein@ecitele.com
>=C2=A0 =C2=A0 =C2=A0<mailto:Alexander.Vainshtein@ecitele.com>
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0<mailto:Alexander.Vainshtein= @ecitele.com
>=C2=A0 =C2=A0 =C2=A0<mailto:Alexander.Vainshtein@ecitele.com>>&= gt;> wrote:____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0+1.____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0I have been following this draft from its -00 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0revision. The
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0current revision has resolved most of the
>=C2=A0 =C2=A0 =C2=A0issues I (and
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0others) have been raised (e.g., elimination of >=C2=A0 =C2=A0 =C2=A0excessive
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0options).____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 From my POV, in its current state the draft mee= ts
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0two basic
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0requirements for the WG adoption:____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A01.It addresses a real and relevant problem, name= ly
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0the MPLS
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0Flow Identification problem discussed in
>=C2=A0 =C2=A0 =C2=A0general in
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0RFC 8372
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0<https://tools.ietf.org/html/rfc837= 2> and
>=C2=A0 =C2=A0 =C2=A0scoped to
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0SR-MPLS
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0LSPs in this draft. Specifics of SR-MPLS
>=C2=A0 =C2=A0 =C2=A0include the
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0need to
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0provide end-to-end liveness check that is one >=C2=A0 =C2=A0 =C2=A0of the
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0requirements explicitly specified in Section 2 >=C2=A0 =C2=A0 =C2=A0of RFC
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A08355
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0<https://tools.ietf.org/html/rfc835= 5>. ____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A02.It provides a reasonable (from my POV)
>=C2=A0 =C2=A0 =C2=A0approach to
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0solution of this problem.____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0I also concur with Stewart=E2=80=99s comment abo= ut strong
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0similarity
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0between the approach taken in this draft for
>=C2=A0 =C2=A0 =C2=A0SR-MPLS and
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0generic work in progress on synonymous flow labe= ls
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 =C2=A0<https://tools.ietf.org/html/draft-ietf-mpls-sfl-framewo= rk-04>
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0that has been already adopted as a MPLS WG
>=C2=A0 =C2=A0 =C2=A0item.=C2=A0 To
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0me this
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0is yet another indication that the draft should = be
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0adopted.____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0My 2c,____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0Sasha____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0Office: +972-39266302____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0Cell:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 +972-5492663= 02____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0Email: Alexander.Vainshtein@ecitele.com
>=C2=A0 =C2=A0 =C2=A0<mailto:Alexander.Vainshtein@ecitele.com>
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0<mailto:Alexander.Vainshtein= @ecitele.com
>=C2=A0 =C2=A0 =C2=A0<mailto:Alexander.Vainshtein@ecitele.com>><= br> >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0<mailto:Alexander.Vainshtein@ecitele.com
>=C2=A0 =C2=A0 =C2=A0<mailto:Alexander.Vainshtein@ecitele.com>
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0<mailto:Alexander.Vainshtein= @ecitele.com
>=C2=A0 =C2=A0 =C2=A0<mailto:Alexander.Vainshtein@ecitele.com>>&= gt;____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0-----Original Message-----
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0From: spring <spring-bounces@ietf.org
>=C2=A0 =C2=A0 =C2=A0<mailto:spring-bounces@ietf.org>
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0<mailto:spring-bounces@ietf.org &= lt;mailto:spri= ng-bounces@ietf.org>>
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0<mailto:spring-bounces@ietf.org
>=C2=A0 =C2=A0 =C2=A0<mailto:spring-bounces@ietf.org>
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0<mailto:spring-bounces@ietf.org >=C2=A0 =C2=A0 =C2=A0<mailto:spring-bounces@ietf.org>>>> On Behalf = Of Stewart Bryant
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0Sent: Wednesday, February 13, 2019 12:48 PM
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0To: Loa Andersson <loa@pi..nu
>=C2=A0 =C2=A0 =C2=A0<mailto:loa@pi.nu <mailto:loa@pi.nu>
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0<mailto:loa@pi.nu <mailto:loa@pi.nu>>>>;
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 > spring@ietf.org <mailto:spring@ietf.org>
>=C2=A0 =C2=A0 =C2=A0<mailto:spring@ietf.org <mailto:spring@ietf.org>>
>=C2=A0 =C2=A0 =C2=A0<mailto:spring@ietf.org <mailto:spring@ietf.org>
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0<mailto:spring@ietf.org <mailto:spring@ietf.org>>&= gt;;
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 > draft-cheng-= spring-mpls-path-segment@ietf.org
>=C2=A0 =C2=A0 =C2=A0<mailto:draft-cheng-spring-mpls-path-seg= ment@ietf.org>
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0<mailto:draft-c= heng-spring-mpls-path-segment@ietf.org
>=C2=A0 =C2=A0 =C2=A0<mailto:draft-cheng-spring-mpls-path-seg= ment@ietf.org>>
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0
>=C2=A0 =C2=A0 =C2=A0 =C2=A0<mailto:draft-cheng-spring-mpls-p= ath-segment@ietf.org
>=C2=A0 =C2=A0 =C2=A0<mailto:draft-cheng-spring-mpls-path-seg= ment@ietf.org>
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0<mailto:draft-c= heng-spring-mpls-path-segment@ietf.org
>=C2=A0 =C2=A0 =C2=A0<mailto:draft-cheng-spring-mpls-path-seg= ment@ietf.org>>>
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0Subject: Re: [spring] to progress
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0draft-cheng-spring-mpls-path-segment____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0I have just read the draft and agree that it
>=C2=A0 =C2=A0 =C2=A0should be
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0adopted by the WG. It solves an important
>=C2=A0 =C2=A0 =C2=A0problem in
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0instrumenting and protecting an SR path.____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0It should be noted that we needed to do
>=C2=A0 =C2=A0 =C2=A0something very
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0similar in mainstream MPLS via the synonymous >=C2=A0 =C2=A0 =C2=A0label work
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0which is already adopted. ____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0However SL did not address the SR case.. We
>=C2=A0 =C2=A0 =C2=A0therefore
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0need
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0this path label work to be progressed.____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0- Stewart____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0On 10/02/2019 08:11, Loa Andersson wrote:____ >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0> Working Group,____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0> ____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0> I have reviewed
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0draft-cheng-spring-mpls-pa= th-segment and as far as I ____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0> can see, it is ready for wg adoption.____ >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0> ____
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>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0> between working groups at that meeting I >=C2=A0 =C2=A0 =C2=A0couldn't
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0attend the SPRING ____
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>=C2=A0 =C2=A0 =C2=A0process.____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0> ____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0> /Loa____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0
>=C2=A0 =C2=A0 =C2=A0 =C2=A0____________________________________________= _______
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0spring mailing list____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 > spring@ietf.org <mailto:spring@ietf.org>
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>=C2=A0 =C2=A0 =C2=A0<mailto:spring@ietf.org <mailto:spring@ietf.org>
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0<mailto:spring@ietf.org <mailto:spring@ietf.org>>&= gt;____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 > https://www..ietf.org/mailman/listinfo/spring____
>=C2=A0 =C2=A0 =C2=A0<http://ietf.org/mailman/listi= nfo/spring____>
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0<http= ://ietf.org/mailman/listinfo/spring____>
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
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>=C2=A0 =C2=A0 =C2=A0 =C2=A0____________________________________________= _______________________________
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0This e-mail message is intended for the recipien= t
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>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0contains information which is
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0CONFIDENTIAL and which may be proprietary to ECI=
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0Telecom. If
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0you have received this
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0transmission in error, please inform us by e-mai= l,
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0phone or
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0fax, and then delete the original
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>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0
>=C2=A0 =C2=A0 =C2=A0 =C2=A0____________________________________________= ___________________________________
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0_______________________________________________<= br> >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0spring mailing list
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 > spring@ietf.org <mailto:spring@ietf.org>
>=C2=A0 =C2=A0 =C2=A0<mailto:spring@ietf.org <mailto:spring@ietf.org>>
>=C2=A0 =C2=A0 =C2=A0<mailto:spring@ietf.org <mailto:spring@ietf.org>
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0<mailto:spring@ietf.org <mailto:spring@ietf.org>>&= gt;
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 > https://www.ietf.org/mailman/listinfo/spring____
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0_= ______________________________________________
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0s= pring mailing list
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>=C2=A0 =C2=A0 =C2=A0<mailto:spring@ietf.org <mailto:spring@ietf.org>>
>=C2=A0 =C2=A0 =C2=A0<mailto:spring@ietf.org <mailto:spring@ietf.org>
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0<mailto:spring@ietf.org <mailto:spring@ietf.org>>&= gt;
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 > h= ttps://www.ietf.org/mailman/listinfo/spring
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0--
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0Loa Andersson=C2=A0 =C2=A0= =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 emai= l: loa@pi.nu
>=C2=A0 =C2=A0 =C2=A0<mailto:loa@pi.nu> <mailto:loa@pi.nu <mailto:loa@pi.nu>>
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0Senior MPLS Expert
>=C2=A0 =C2=A0 =C2=A0 >=C2=A0 =C2=A0 =C2=A0Bronze Dragon Consulting= =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0phone: +46 739 81 21 64
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 >
>=C2=A0 =C2=A0 =C2=A0 > _____________________________________________= __
>=C2=A0 =C2=A0 =C2=A0 > spring mailing list
>=C2=A0 =C2=A0 =C2=A0 > spring@ietf.org <mailto:spring@ietf.org>
>=C2=A0 =C2=A0 =C2=A0 > https://www.ietf.org/mailm= an/listinfo/spring
>=C2=A0 =C2=A0 =C2=A0 >
>
>=C2=A0 =C2=A0 =C2=A0--
>
>
>=C2=A0 =C2=A0 =C2=A0Loa Andersson=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 email: loa@pi.nu <mailto:loa@pi.nu>
>=C2=A0 =C2=A0 =C2=A0Senior MPLS Expert
>=C2=A0 =C2=A0 =C2=A0Bronze Dragon Consulting=C2=A0 =C2=A0 =C2=A0 =C2=A0= =C2=A0 =C2=A0 =C2=A0phone: +46 739 81 21 64
>
>
> _______________________________________________
> spring mailing list
> spring@ietf.org
>
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--


Loa Andersson=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0= =C2=A0 =C2=A0 =C2=A0 email: loa@pi.nu
Senior MPLS Expert
Bronze Dragon Consulting=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0pho= ne: +46 739 81 21 64
--000000000000e378140582920a57-- From nobody Sun Feb 24 11:44:01 2019 Return-Path: X-Original-To: mpls@ietf.org Delivered-To: mpls@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id E302912D4EF; Sun, 24 Feb 2019 11:43:52 -0800 (PST) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: Cc: mpls@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 6.91.0 Auto-Submitted: auto-generated Precedence: bulk Reply-To: mpls@ietf.org Message-ID: <155103743287.10983.6512427262984211001@ietfa.amsl.com> Date: Sun, 24 Feb 2019 11:43:52 -0800 Archived-At: Subject: [mpls] I-D Action: draft-ietf-mpls-base-yang-10.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 24 Feb 2019 19:43:53 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Multiprotocol Label Switching WG of the IETF. Title : A YANG Data Model for MPLS Base Authors : Tarek Saad Kamran Raza Rakesh Gandhi Xufeng Liu Vishnu Pavan Beeram Filename : draft-ietf-mpls-base-yang-10.txt Pages : 19 Date : 2019-02-24 Abstract: This document contains a specification of the the MPLS base YANG model. The MPLS base YANG model serves as a base framework for configuring and managing an MPLS switching subsystem on an MPLS- enabled router. It is expected that other MPLS YANG models (e.g. MPLS LSP Static, LDP or RSVP-TE YANG models) will augment the MPLS base YANG model. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-mpls-base-yang/ There are also htmlized versions available at: https://tools.ietf.org/html/draft-ietf-mpls-base-yang-10 https://datatracker.ietf.org/doc/html/draft-ietf-mpls-base-yang-10 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-mpls-base-yang-10 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ From nobody Sun Feb 24 17:23:33 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id E0AFE130E86 for ; Sun, 24 Feb 2019 17:23:31 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.2 X-Spam-Level: X-Spam-Status: No, score=-4.2 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id R_0b_1alw0ZT for ; Sun, 24 Feb 2019 17:23:30 -0800 (PST) Received: from rfc-editor.org (rfc-editor.org [4.31.198.49]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 04D7B12DD85 for ; Sun, 24 Feb 2019 17:23:29 -0800 (PST) Received: by rfc-editor.org (Postfix, from userid 30) id C02BDB80458; Sun, 24 Feb 2019 17:23:11 -0800 (PST) To: erosen@cisco.com, arun@force10networks.com, rcallon@juniper.net, db3546@att.com, aretana.ietf@gmail.com, martin.vigoureux@nokia.com, loa@pi.nu, n.leymann@telekom.de X-PHP-Originating-Script: 30:errata_mail_lib.php From: RFC Errata System Cc: markzzzsmith@gmail.com, mpls@ietf.org, rfc-editor@rfc-editor.org Content-Type: text/plain; charset=UTF-8 Message-Id: <20190225012311.C02BDB80458@rfc-editor.org> Date: Sun, 24 Feb 2019 17:23:11 -0800 (PST) Archived-At: Subject: [mpls] [Technical Errata Reported] RFC3031 (5643) X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 25 Feb 2019 01:23:32 -0000 The following errata report has been submitted for RFC3031, "Multiprotocol Label Switching Architecture". -------------------------------------- You may review the report below and at: http://www.rfc-editor.org/errata/eid5643 -------------------------------------- Type: Technical Reported by: Mark Smith Section: Terminology Original Text ------------- Corrected Text -------------- label edge router - a router capable of accepting an unlabelled packet, and through MPLS processing, may MPLS encapsulate the packet by adding a label stack. Notes ----- I am doing some MPLS review. The book I'm using said an LER was an (RFC3031) MPLS edge node. I believed it was any router that could take unlabelled packets and label them, regardless of where the router was within the MPLS domain. (In other words, an MPLS router was not an LER if it would not MPLS label unlabelled packets and forward them.) I decided to check RFC3031 for a definition, and discovered there isn't a definition at all for "label edge router", or a match on any text that matches "label edge" or "LER". RFC6178 clarifies LER processing of IPv4 packets, and the general description of processing matches my understanding of what an LER is. However, it doesn't formally define an "label edge router" either, and I think an update to RFC3031 should be where "label edge router" is formally defined. Instructions: ------------- This erratum is currently posted as "Reported". If necessary, please use "Reply All" to discuss whether it should be verified or rejected. When a decision is reached, the verifying party can log in to change the status and edit the report, if necessary. -------------------------------------- RFC3031 (draft-ietf-mpls-arch-06) -------------------------------------- Title : Multiprotocol Label Switching Architecture Publication Date : January 2001 Author(s) : E. Rosen, A. Viswanathan, R. Callon Category : PROPOSED STANDARD Source : Multiprotocol Label Switching Area : Routing Stream : IETF Verifying Party : IESG From nobody Sun Feb 24 18:32:54 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 7FDCA130E98; Sun, 24 Feb 2019 18:32:52 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.7 X-Spam-Level: X-Spam-Status: No, score=-1.7 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, SPF_PASS=-0.001, URIBL_BLOCKED=0.001, URIBL_DBL_SPAM=2.5] autolearn=no autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id OcYn-NgsJcB6; Sun, 24 Feb 2019 18:32:49 -0800 (PST) Received: from huawei.com (lhrrgout.huawei.com [185.176.76.210]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 0E452128BCC; Sun, 24 Feb 2019 18:32:49 -0800 (PST) Received: from lhreml704-cah.china.huawei.com (unknown [172.18.7.106]) by Forcepoint Email with ESMTP id 7B3435978DEFE0CF7E90; Mon, 25 Feb 2019 02:32:46 +0000 (GMT) Received: from DGGEML405-HUB.china.huawei.com (10.3.17.49) by lhreml704-cah.china.huawei.com (10.201.108.45) with Microsoft SMTP Server (TLS) id 14.3.408.0; Mon, 25 Feb 2019 02:32:45 +0000 Received: from DGGEML529-MBX.china.huawei.com ([169.254.6.187]) by dggeml405-hub.china.huawei.com ([10.3.17.49]) with mapi id 14.03.0415.000; Mon, 25 Feb 2019 10:32:42 +0800 From: "Chengli (Cheng Li)" To: Loa Andersson , Greg Mirsky CC: "mpls@ietf.org" , spring , Weiqiang Cheng , "draft-cheng-spring-mpls-path-segment@ietf.org" Thread-Topic: [mpls] [spring] to progress draft-cheng-spring-mpls-path-segment Thread-Index: AQHUyzC/3+4K0aHNrUy+2rVERdsXgKXsg4cAgANJb0A= Date: Mon, 25 Feb 2019 02:32:41 +0000 Message-ID: References: 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X19fX19fX19fX19fX19fX18NCm1wbHMgbWFpbGluZyBsaXN0DQptcGxzQGlldGYub3JnDQpodHRw czovL3d3dy5pZXRmLm9yZy9tYWlsbWFuL2xpc3RpbmZvL21wbHMNCg== From nobody Sun Feb 24 20:49:56 2019 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 8B8C7130DD3; Sun, 24 Feb 2019 20:49:47 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.5 X-Spam-Level: X-Spam-Status: No, score=-14.5 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_HI=-5, SPF_PASS=-0.001, URIBL_BLOCKED=0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=cisco.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with 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Malis" CC: "ops-dir@ietf.org" , mpls , "draft-ietf-mpls-sfc-encapsulation.all@ietf.org" , IETF Discussion , "sfc@ietf.org" Thread-Topic: [mpls] Opsdir last call review of draft-ietf-mpls-sfc-encapsulation-02 Thread-Index: AQHUyhBL6QxMzhBFbEuO+4PZE0wBEaXrX0GAgADV+YCABBV+gA== Date: Mon, 25 Feb 2019 04:49:41 +0000 Message-ID: <7CB3E446-C745-42B4-A6A0-31028E1569C3@cisco.com> References: <155072147698.20210.381511429964485828@ietfa.amsl.com> <6A97863A-DD90-4D62-9607-569386F5F850@cisco.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: Apple Mail (2.3445.102.3) x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.70.231.8] Content-Type: multipart/alternative; boundary="_000_7CB3E446C74542B4A6A031028E1569C3ciscocom_" MIME-Version: 1.0 X-Outbound-SMTP-Client: 64.101.220.157, xch-rtp-017.cisco.com X-Outbound-Node: rcdn-core-3.cisco.com Archived-At: Subject: Re: [mpls] 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Malis" , mpls , "ops-dir@ietf.org" , "draft-ietf-mpls-sfc-encapsulation.all@ietf.org" , IETF Discussion , "sfc@ietf.org" Thread-Topic: [mpls] Opsdir last call review of draft-ietf-mpls-sfc-encapsulation-02 Thread-Index: AQHUyhBL6QxMzhBFbEuO+4PZE0wBEaXrX0GAgADV+YCAACX5AIAD8MoA Date: Mon, 25 Feb 2019 04:54:13 +0000 Message-ID: <7CA6EE6E-3D6C-4ACF-B9B4-540C57A658E8@cisco.com> References: <155072147698.20210.381511429964485828@ietfa.amsl.com> <6A97863A-DD90-4D62-9607-569386F5F850@cisco.com> <03769b15-8375-a23a-a882-0a183056a8b5@joelhalpern.com> In-Reply-To: <03769b15-8375-a23a-a882-0a183056a8b5@joelhalpern.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: Apple Mail (2.3445.102.3) x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.70.231.8] Content-Type: multipart/alternative; boundary="_000_7CA6EE6E3D6C4ACFB9B4540C57A658E8ciscocom_" MIME-Version: 1.0 X-Outbound-SMTP-Client: 64.101.220.158, xch-rtp-018.cisco.com X-Outbound-Node: rcdn-core-4.cisco.com Archived-At: Subject: Re: [mpls] Opsdir last call review of draft-ietf-mpls-sfc-encapsulation-02 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 25 Feb 2019 04:54:21 -0000 --_000_7CA6EE6E3D6C4ACFB9B4540C57A658E8ciscocom_ Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 SGksIEpvZWwsDQoNCk1heWJlIEkgYW0gbWlzdW5kZXJzdGFuZGluZyBzb21ldGhpbmcuIElzIHRo ZSBTRkYgTGFiZWwsIGluIHRoZSBjb250ZXh0IG9mIE1QTFMgdHJhbnNwb3J0IGVuY2Fwc3VsYXRp b24gZm9yIHRoZSBTRkMgTlNILCBldmVyIGV4cGVjdGVkIHRvIGJlIHVzZWQgZm9yIEZvcndhcmRp bmc/IElzIGl0cyBUVEwgZXZlciBleHBlY3RlZCB0byBiZSBkZWNyZW1lbnRlZCBhbmQgdGhlIHBh Y2tldCBzZW50PyBJZiBzbywgSSBkaWQgbm90IHVuZGVyc3RhbmQgdGhhdCBmcm9tIHRoZSBleGlz 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