< draft-ietf-pce-stateful-pce-optional-02.txt   draft-ietf-pce-stateful-pce-optional-03.txt >
PCE Working Group C. Li PCE Working Group C. Li
Internet-Draft H. Zheng Internet-Draft H. Zheng
Updates: 8231 (if approved) Huawei Technologies Updates: 8231 (if approved) Huawei Technologies
Intended status: Standards Track S. Litkowski Intended status: Standards Track S. Litkowski
Expires: 26 April 2022 Cisco Expires: 23 October 2022 Cisco
23 October 2021 21 April 2022
Extension for Stateful PCE to allow Optional Processing of PCEP Objects Extension for Stateful PCE to allow Optional Processing of PCEP Objects
draft-ietf-pce-stateful-pce-optional-02 draft-ietf-pce-stateful-pce-optional-03
Abstract Abstract
This document introduces a mechanism to mark some of the Path This document introduces a mechanism to mark some of the Path
Computation Element (PCE) Communication Protocol (PCEP) objects as Computation Element (PCE) Communication Protocol (PCEP) objects as
optional during PCEP messages exchange for the Stateful PCE model to optional during PCEP messages exchange for the Stateful PCE model to
allow relaxing some constraints. This document introduces this allow relaxing some constraints. This document introduces this
relaxation and updates RFC 8231. relaxation and updates RFC 8231.
Status of This Memo Status of This Memo
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Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet- working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/. Drafts is at https://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
This Internet-Draft will expire on 26 April 2022. This Internet-Draft will expire on 23 October 2022.
Copyright Notice Copyright Notice
Copyright (c) 2021 IETF Trust and the persons identified as the Copyright (c) 2022 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents (https://trustee.ietf.org/ Provisions Relating to IETF Documents (https://trustee.ietf.org/
license-info) in effect on the date of publication of this document. license-info) in effect on the date of publication of this document.
Please review these documents carefully, as they describe your rights Please review these documents carefully, as they describe your rights
and restrictions with respect to this document. Code Components and restrictions with respect to this document. Code Components
extracted from this document must include Simplified BSD License text extracted from this document must include Revised BSD License text as
as described in Section 4.e of the Trust Legal Provisions and are described in Section 4.e of the Trust Legal Provisions and are
provided without warranty as described in the Simplified BSD License. provided without warranty as described in the Revised BSD License.
Table of Contents Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. Requirements Language . . . . . . . . . . . . . . . . . . 3 1.1. Requirements Language . . . . . . . . . . . . . . . . . . 3
2. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1. Usage Example . . . . . . . . . . . . . . . . . . . . . . 4 2.1. Usage Example . . . . . . . . . . . . . . . . . . . . . . 4
3. PCEP Extension . . . . . . . . . . . . . . . . . . . . . . . 4 3. PCEP Extension . . . . . . . . . . . . . . . . . . . . . . . 4
3.1. STATEFUL-PCE-CAPABILITY TLV . . . . . . . . . . . . . . . 5 3.1. STATEFUL-PCE-CAPABILITY TLV . . . . . . . . . . . . . . . 5
3.2. Handling of P flag . . . . . . . . . . . . . . . . . . . 5 3.2. Handling of P flag . . . . . . . . . . . . . . . . . . . 5
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Extensions for Stateful PCE", RFC 8231, Extensions for Stateful PCE", RFC 8231,
DOI 10.17487/RFC8231, September 2017, DOI 10.17487/RFC8231, September 2017,
<https://www.rfc-editor.org/info/rfc8231>. <https://www.rfc-editor.org/info/rfc8231>.
8.2. Informative References 8.2. Informative References
[I-D.ietf-pce-pcep-yang] [I-D.ietf-pce-pcep-yang]
Dhody, D., Hardwick, J., Beeram, V. P., and J. Tantsura, Dhody, D., Hardwick, J., Beeram, V. P., and J. Tantsura,
"A YANG Data Model for Path Computation Element "A YANG Data Model for Path Computation Element
Communications Protocol (PCEP)", Work in Progress, Communications Protocol (PCEP)", Work in Progress,
Internet-Draft, draft-ietf-pce-pcep-yang-16, 22 February Internet-Draft, draft-ietf-pce-pcep-yang-18, 25 January
2021, <https://www.ietf.org/archive/id/draft-ietf-pce- 2022, <https://www.ietf.org/archive/id/draft-ietf-pce-
pcep-yang-16.txt>. pcep-yang-18.txt>.
[RFC4655] Farrel, A., Vasseur, J.-P., and J. Ash, "A Path [RFC4655] Farrel, A., Vasseur, J.-P., and J. Ash, "A Path
Computation Element (PCE)-Based Architecture", RFC 4655, Computation Element (PCE)-Based Architecture", RFC 4655,
DOI 10.17487/RFC4655, August 2006, DOI 10.17487/RFC4655, August 2006,
<https://www.rfc-editor.org/info/rfc4655>. <https://www.rfc-editor.org/info/rfc4655>.
[RFC7525] Sheffer, Y., Holz, R., and P. Saint-Andre, [RFC7525] Sheffer, Y., Holz, R., and P. Saint-Andre,
"Recommendations for Secure Use of Transport Layer "Recommendations for Secure Use of Transport Layer
Security (TLS) and Datagram Transport Layer Security Security (TLS) and Datagram Transport Layer Security
(DTLS)", BCP 195, RFC 7525, DOI 10.17487/RFC7525, May (DTLS)", BCP 195, RFC 7525, DOI 10.17487/RFC7525, May
 End of changes. 6 change blocks. 
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