RFC 9256

Segment Routing Policy Architecture, July 2022

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Status:
PROPOSED STANDARD
Updates:
RFC 8402
Authors:
C. Filsfils
K. Talaulikar, Ed.
D. Voyer
A. Bogdanov
P. Mattes
Stream:
IETF
Source:
spring (rtg)

Cite this RFC: TXT  |  XML

DOI:  10.17487/RFC9256

Discuss this RFC: Send questions or comments to spring@ietf.org

Other actions: Submit Errata  |  Find IPR Disclosures from the IETF  |  View History of RFC 9256


Abstract

Segment Routing (SR) allows a node to steer a packet flow along any path. Intermediate per-path states are eliminated thanks to source routing. SR Policy is an ordered list of segments (i.e., instructions) that represent a source-routed policy. Packet flows are steered into an SR Policy on a node where it is instantiated called a headend node. The packets steered into an SR Policy carry an ordered list of segments associated with that SR Policy.

This document updates RFC 8402 as it details the concepts of SR Policy and steering into an SR Policy.


For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 8729.




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