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RFC 9830
Title: Advertising Segment Routing Policies in BGP
Author: S. Previdi,
C. Filsfils,
K. Talaulikar, Ed.,
P. Mattes,
D. Jain
Status: Standards Track
Stream: IETF
Date: September 2025
Mailbox: [email protected],
[email protected],
[email protected],
[email protected],
[email protected]
Pages: 36
Updates: RFC 9012
I-D Tag: draft-ietf-idr-sr-policy-safi-13.txt
URL: https://www.rfc-editor.org/info/rfc9830
DOI: 10.17487/RFC9830
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.
This document is a product of the Inter-Domain Routing Working Group of the
IETF.
This is now a Proposed Standard.
STANDARDS TRACK: This document specifies an Internet Standards Track
protocol for the Internet community, and requests discussion and suggestions
for improvements. Please refer to the current edition of the Official
Internet Protocol Standards (https://www.rfc-editor.org/standards) for the
standardization state and status of this protocol. Distribution of this
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