RFC 9086

Border Gateway Protocol - Link State (BGP-LS) Extensions for Segment Routing BGP Egress Peer Engineering, August 2021

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S. Previdi
K. Talaulikar, Ed.
C. Filsfils
K. Patel
S. Ray
J. Dong
idr (rtg)

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DOI:  10.17487/RFC9086

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A node steers a packet through a controlled set of instructions, called segments, by prepending the packet with a list of segment identifiers (SIDs). A segment can represent any instruction, topological or service based. SR segments allow steering a flow through any topological path and service chain while maintaining per-flow state only at the ingress node of the SR domain.

This document describes an extension to Border Gateway Protocol - Link State (BGP-LS) for advertisement of BGP Peering Segments along with their BGP peering node information so that efficient BGP Egress Peer Engineering (EPE) policies and strategies can be computed based on Segment Routing.

For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 8729.

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