Border Gateway Protocol - Link State Extensions for Segment Routing BGP Egress Peer Engineering
RFC 9086, “Border Gateway Protocol - Link State Extensions for Segment Routing BGP Egress Peer Engineering”, is a Proposed Standard document published in August 2021 by S. Previdi, K. Talaulikar, C. Filsfils, K. Patel, S. Ray, J. Dong. The canonical text is published by the RFC Editor.
Abstract
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.
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.
The canonical text of RFC 9086 is hosted at rfc-editor.org. Available in HTML,TXT,PDF,XML.
- RFC 9085 Border Gateway Protocol - Link State Extensions for Segment Routing
- RFC 9087 Segment Routing Centralized BGP Egress Peer Engineering
- RFC 9084 OSPF Prefix Originator Extensions
- RFC 9088 Signaling Entropy Label Capability and Entropy Readable Label Depth Using IS-IS
- RFC 9083 JSON Responses for the Registration Data Access Protocol
- RFC 9089 Signaling Entropy Label Capability and Entropy Readable Label Depth Using OSPF
- RFC 9082 Registration Data Access Protocol Query Format
- RFC 9090 Concise Binary Object Representation Tags for Object Identifiers