2017•Unpublished venueRequires access

Advertising Segment Routing Policies in BGP

Eric Rosen, Steven Lin, Paul Mattes, Stefano Previdi, Dhanendra Jain, Clarence Filsfils

Abstract

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, each 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.

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Key concepts: Computer science, Border Gateway Protocol, Computer network, Set (abstract data type), Routing (electronic design automation), Routing protocol, Static routing, Programming language