Path Computation Element Communication Protocol (PCEP) Extensions for Segment Routing (SR) Policy Candidate Paths

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Publisher: IETF
Doc Type: Standard
Pages: 26
Abstract: A Segment Routing (SR) Policy is an ordered list of instructions called "segments" that represent a source-routed policy. Packet flows are steered into an SR Policy on a node where it is instantiated. An SR Policy is made of one or more Candidate Paths. This document specifies the Path Computation Element Communication Protocol (PCEP) extension to signal Candidate Paths of an SR Policy. Additionally, this document updates RFC 8231 to allow delegation and setup of an SR Label Switched Path (LSP) without using the path computation request and reply messages. This document is applicable to both Segment Routing over MPLS (SR-MPLS) and Segment Routing over IPv6 (SRv6).
Publication Date: 2025-10-01
Status Note: Proposed Standard
DOI: 10.17487/RFC9862
Link: https://doi.org/10.17487/RFC9862
Author(s): Mike Koldychev
Siva Sivabalan
Samuel Sidor
Colby Barth
Shuping Peng
Hooman Bidgoli
Keyword(s): PCEP, Segment Routing

Latest version of IETF RFC 9862

Document Versions — IETF RFC 9862

▶ IETF RFC 9862 (2025-10-01)

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Normative Reference(s)

IETF RFC 20 [Active*]
IETF RFC 2119 [Active*]
IETF RFC 3032 [Active*]
IETF RFC 5440 [Active*]
IETF RFC 8126 [Active*]
IETF RFC 8174 [Active*]
IETF RFC 8231 [Active*]
IETF RFC 8253 [Active*]
IETF RFC 8281 [Active*]
IETF RFC 8402 [Active*]
IETF RFC 8408 [Active*]
IETF RFC 8664 [Active*]
IETF RFC 8697 [Active*]
IETF RFC 9256 [Active*]
IETF RFC 9325 [Active*]
IETF RFC 9603 [Active*]

Bibliographic Reference(s)

IETF.draft-ietf-pce-multipath-16 — I-D.ietf-pce-multipath EXTERNAL
IETF.draft-ietf-pce-pcep-srv6-yang-08 — I-D.ietf-pce-pcep-srv6-yang EXTERNAL
IETF RFC 3031 [Active*]
IETF RFC 4655 [Active*]
IETF RFC 9552 [Active*]
IETF RFC 9604 [Active*]
IETF RFC 9830 [Active*]
IETF RFC 9857 [Active*]

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IETF RFC 8231 [Active*]

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IETF RFC 9862, Path Computation Element Communication Protocol (PCEP) Extensions for Segment Routing (SR) Policy Candidate Paths. Available at https://doi.org/10.17487/RFC9862

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IETF RFC 9862, Path Computation Element Communication Protocol (PCEP) Extensions for Segment Routing (SR) Policy Candidate Paths. Available at https://doi.org/10.17487/RFC9862

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IETF RFC 9862, Path Computation Element Communication Protocol (PCEP) Extensions for Segment Routing (SR) Policy Candidate Paths. Available at https://doi.org/10.17487/RFC9862

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<span class="citation"><cite>IETF RFC 9862</cite>, Path Computation Element Communication Protocol (PCEP) Extensions for Segment Routing (SR) Policy Candidate Paths. Available at <a href="https://doi.org/10.17487/RFC9862" target="_blank" rel="noopener">https://doi.org/10.17487/RFC9862</a></span>

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IETF RFC 9862, Path Computation Element Communication Protocol (PCEP) Extensions for Segment Routing (SR) Policy Candidate Paths
doi: 10.17487/RFC9862
url: https://doi.org/10.17487/RFC9862

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<li>
<cite id="bib-rfc9862">IETF RFC 9862</cite>, Path Computation Element Communication Protocol (PCEP) Extensions for Segment Routing (SR) Policy Candidate Paths
<span class="doi">10.17487/RFC9862</span>
</li>