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Advertising Segment Routing Policies in BGP

Document Type Replaced Internet-Draft (idr WG)
Expired & archived
Authors Stefano Previdi , Clarence Filsfils , Ketan Talaulikar , Paul Mattes , Dhanendra Jain
Last updated 2023-10-23
Replaces draft-previdi-idr-segment-routing-te-policy
Replaced by draft-ietf-idr-sr-policy-safi, draft-ietf-idr-bgp-sr-segtypes-ext
RFC stream Internet Engineering Task Force (IETF)
Intended RFC status Proposed Standard
Additional resources Mailing list discussion
Stream WG state Submitted to IESG for Publication
Document shepherd Susan Hares
Shepherd write-up Show Last changed 2023-07-18
IESG IESG state Replaced by draft-ietf-idr-bgp-sr-segtypes-ext, draft-ietf-idr-sr-policy-safi
Action Holder
Consensus boilerplate Yes
Telechat date (None)
Responsible AD Andrew Alston
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


This document introduces a BGP SAFI with two NLRIs to advertise a candidate path of a Segment Routing (SR) Policy. An SR Policy is an ordered list of segments (i.e., instructions) that represent a source-routed policy. An SR Policy consists of one or more candidate paths, each consisting of one or more segment lists. A headend may be provisioned with candidate paths for an SR Policy via several different mechanisms, e.g., CLI, NETCONF, PCEP, or BGP. This document specifies how BGP may be used to distribute SR Policy candidate paths. It defines sub-TLVs for the Tunnel Encapsulation Attribute for signaling information about these candidate paths. This documents updates RFC9012 with extensions to the Color Extended Community to support additional steering modes over SR Policy.


Stefano Previdi
Clarence Filsfils
Ketan Talaulikar
Paul Mattes
Dhanendra Jain

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)