Advertising Segment Routing Policies in BGP

Document Type Replaced Internet-Draft (idr WG)
Authors Stefano Previdi  , Clarence Filsfils  , Paul Mattes  , Eric Rosen  , Steven Lin 
Last updated 2017-07-19 (latest revision 2017-06-23)
Replaces draft-sreekantiah-idr-segment-routing-te
Replaced by draft-ietf-idr-segment-routing-te-policy
Stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Expired & archived
pdf htmlized (tools) htmlized bibtex
Stream WG state Adopted by a WG
Document shepherd No shepherd assigned
IESG IESG state Replaced by draft-ietf-idr-segment-routing-te-policy
Consensus Boilerplate Unknown
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document defines a new BGP SAFI with a new NLRI in order to advertise a candidate path of a Segment Routing Policy (SR Policy). An SR Policy is a set of candidate paths consisting of one or more segment lists. The headend of an SR Policy may learn multiple candidate paths for an SR Policy. Candidate paths may be learned via a number of different mechanisms, e.g., CLI, NetConf, PCEP, or BGP. This document specifies the way in which BGP may be used to distribute candidate paths. New sub-TLVs for the Tunnel Encapsulation Attribute are defined.


Stefano Previdi (
Clarence Filsfils (
Paul Mattes (
Eric Rosen (
Steven Lin (

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