Segment Routing Prefix SID extensions for BGP

Document Type Replaced Internet-Draft (idr WG)
Authors Keyur Patel  , Stefano Previdi  , Clarence Filsfils  , Arjun Sreekantiah  , Saikat Ray  , Hannes Gredler 
Last updated 2015-10-14 (latest revision 2015-07-20)
Replaced by RFC 8669
Stream 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-bgp-prefix-sid
Consensus Boilerplate Unknown
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Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


Segment Routing (SR) architecture allows a node to steer a packet flow through any topological path and service chain by leveraging source routing. The ingress node prepends a SR header to a packet containing a set of "segments". Each segment represents a topological or a service-based instruction. Per-flow state is maintained only at the ingress node of the SR domain. This document describes the BGP extension for announcing BGP Prefix Segment Identifier (BGP Prefix SID) information.


Keyur Patel (
Stefano Previdi (
Clarence Filsfils (
Arjun Sreekantiah (
Saikat Ray (
Hannes Gredler (

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