Advertising Segment Routing Policies in BGP

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Publisher: IETF
Doc Type: Standard
Pages: 36
Abstract: A Segment Routing (SR) Policy is an ordered list of segments (also referred to as "instructions") that define a source-routed policy. An SR Policy consists of one or more Candidate Paths (CPs), each comprising one or more segment lists. A headend can be provisioned with these CPs using various mechanisms such as Command-Line Interface (CLI), Network Configuration Protocol (NETCONF), Path Computation Element Communication Protocol (PCEP), or BGP. This document specifies how BGP can be used to distribute SR Policy CPs. It introduces a BGP SAFI for advertising a CP of an SR Policy and defines sub-TLVs for the Tunnel Encapsulation Attribute to signal information related to these CPs. Furthermore, this document updates RFC 9012 by extending the Color Extended Community to support additional steering modes over SR Policy.
Publication Date: 2025-09-01
Status Note: Proposed Standard
DOI: 10.17487/RFC9830
Link: https://doi.org/10.17487/RFC9830
Author(s): Stefano Previdi
Clarence Filsfils
Ketan Talaulikar
Paul Mattes
Dhanendra Jain

Latest version of IETF RFC 9830

Document Versions — IETF RFC 9830

▶ IETF RFC 9830 (2025-09-01)

THIS DOC [ACTIVE] [LATEST VERSION]

Normative Reference(s)

IETF RFC 1997 [Active*]
IETF RFC 2119 [Active*]
IETF RFC 2545 [Active*]
IETF RFC 3032 [Active*]
IETF RFC 4271 [Active*]
IETF RFC 4360 [Active*]
IETF RFC 4760 [Active*]
IETF RFC 5462 [Active*]
IETF RFC 6286 [Active*]
IETF RFC 7606 [Active*]
IETF RFC 8126 [Active*]
IETF RFC 8174 [Active*]
IETF RFC 8402 [Active*]
IETF RFC 8660 [Active*]
IETF RFC 8754 [Active*]
IETF RFC 8986 [Active*]
IETF RFC 9012 [Active*]
IETF RFC 9256 [Active*]

Bibliographic Reference(s)

IETF.draft-ietf-idr-bgp-ls-sr-policy-17 — I-D.ietf-idr-bgp-ls-sr-policy EXTERNAL
IETF.draft-ietf-idr-bgp-model-18 — I-D.ietf-idr-bgp-model EXTERNAL
IETF.draft-ietf-spring-sr-policy-yang-05 — I-D.ietf-spring-sr-policy-yang EXTERNAL
IETF RFC 4272 [Active*]
IETF RFC 4456 [Active*]
IETF RFC 6952 [Active*]
IETF RFC 9552 [Active*]
RFC9831 — RFC9831 EXTERNAL

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IETF RFC 9012 [Active*]

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doi: 10.17487/RFC9830
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Referenced By

IETF RFC 10018 [Active*]