RFC 9085 · PROPOSED STANDARD · 2021

Border Gateway Protocol - Link State Extensions for Segment Routing

Overview

RFC 9085, “Border Gateway Protocol - Link State Extensions for Segment Routing”, is a Proposed Standard document published in August 2021 by S. Previdi, K. Talaulikar, C. Filsfils, H. Gredler, M. Chen. It has since been updated by RFC 9356. The canonical text is published by the RFC Editor.

Abstract

Segment Routing (SR) allows for a flexible definition of end-to-end paths by encoding paths as sequences of topological subpaths, called "segments". These segments are advertised by routing protocols, e.g., by the link-state routing protocols (IS-IS, OSPFv2, and OSPFv3) within IGP topologies.

This document defines extensions to the Border Gateway Protocol - Link State (BGP-LS) address family in order to carry SR information via BGP.

Abstract as published in the RFC, via rfc-editor.org.

What “Proposed Standard” means

An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.

Read this RFC

The canonical text of RFC 9085 is hosted at rfc-editor.org. Available in HTML,TXT,PDF,XML.

Relationships to other RFCs
Updated by
RFC 9356
Other RFCs from 2021

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