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RE: [PWE3] draft-ietf-pwe3-sonet-05.txt - Last Call
Stewart, Ron, all,
Here's some minor edits to align with T1X1.5 updates to T1.105 (aligning with 2001 version) and ITU-T updates:
6 SONET/SDH Maintenance Signals
- as multiple functionalities (LTE, PTE, etc) may be supported at a NSP, it may help clarify to add,
"Failure detection capabilities and performance monitoring capabilities will be dependent on the NSP functionality e.g. LTE, PTE, Tandem Connection Monitoring (refer to [G.707]), or Non-intrusive Monitoring (intermediate connection monitoring)."
6.1.1 AIS-P/V Indication
- minor edits on included defects, and suggest to say "for example" as SDH and SONET differ on AIS insertion:
"The mapping of SONET/SDH failures into the PATH/VT layer is considered part of the NSP function, and is based on the principles specified in [GR253], [SONET], [G.707], [G.806], and [G.783]. Should for example the Section Layer detect a Loss of Signal (LOS) or Loss of Frame (LOF) or Section Trace Mismatch (TIM) conditions, it sends AIS-L up to the Line Layer. If the Line Layer detects AIS-L or Loss of Pointer (LOP), it sends AIS-P to the Path Layer. If the Path Layer detects AIS-P or UNEQ-P or TIM-P or PLM-P and is terminated at the NSP (i.e. PTE), it sends AIS-V to the VT Layer. Note, a non-intrusive monitor only detects failures, it must not do AIS insertion."
6.1.2 Unequipped Indication
- minor edit to add test signal differentiation:
"The declaration of SPE/VT unequipped MUST conform to [GR253], [SONET], or [G806] and [G783]. [GR253] detection is based on the presence of an unequipped Signal Label. [SONET]/SDH detection is based on the presence of an unequipped Signal Label and an all zeros Trail Trace Identifier (TTI) to distinguish the presence of an unequipped signal or a [SONET] test signal (Supervisory-Unequipped [G707])."
- suggest to remove the next paragraph "STS PTE shall detect an STS Path Unequipped (UNEQ-P) defect..". The detection/clearing definition used for the UNEQ defect is based on GR253, G783 has a different defect detection. As AIS defect detection is also not included in the draft, the first paragraph referring to the appropriate standards is sufficient.
9.1 Near-end Performance Monitors
- suggest adding a CEP-NE failure similar to the CEP-FE failure (section 9.2),
"CEP Near-end (CEP-NE) failure is declared after 2.5 +/- 0.5 seconds of Type 2 CEP defect, and cleared after 10 seconds free of CEP defect state. Sending notification to the OS for CEP failure is local policy."
10 Payload Compression Options
- suggest adding a sentence on use of DBA (at end of 2nd paragraph) to clarify:
"The use of DBA will be dependent on network architectures e.g. support of Tandem Connection Monitoring, test signals."
Regards,
Deborah
-----Original Message-----
From: pwe3-admin@ietf.org [mailto:pwe3-admin@ietf.org]On Behalf Of
Stewart Bryant
Sent: Tuesday, April 27, 2004 8:25 AM
To: Ron Cohen
Cc: PWE3 (IETF)
Subject: [PWE3] draft-ietf-pwe3-sonet-05.txt - Last Call
This formally starts the two week Last Call process.
Last Call will end Wednesday 12th May
- Stewart
Ron Cohen wrote:
> Dear PWE3ers
>
> The updated CEP draft is now available at
> http://www.ietf.org/internet-drafts/draft-ietf-pwe3-sonet-05.txt
>
> Below please find the list of modification made since the 04 version.
> The authors believe the draft is now ready for last call.
>
> 1. Section 11: Signaling of CEP pseudo-wires: Added mandatory/optional
> attribute for each parameter. Clarified which error codes are returned
> when signaling fails and referenced the IANA draft for actual values.
> Added a table of values for the CEP/TDM bit rate parameter. Fixed
> language.
>
> 2. Draft 04 appendix B discussing actual payload sizes of fractional
> payload compression modes was folded into section 10. This removed
> duplication of data and clarified in-context the actual payload sizes.
> Verify that the draft body (without appendixes) includes all information
> required for implementation and interoperability.
>
> 3. Removed non-ASCII characters. Aligned formats and language (DS-3, DS3
> and T3 to T3). Removed empty open issues section. Added VT payload size
> table. Updated authors contact addresses.
>
> 4. Security section rewritten
>
> Thanks
> Ron & Co-authors
>
> Ron Cohen
> CTO
> Lycium Networks
> Mobile: 650.823.7672
> Mobile: +972.55.245.104
> Tel: 650.234.4010
> Fax: 650.854.8183
>
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