Advertising Layer 2 Bundle Member Link Attributes in OSPF
RFC 9356, “Advertising Layer 2 Bundle Member Link Attributes in OSPF”, is a Proposed Standard document published in January 2023 by K. Talaulikar, P. Psenak. It updates RFC 9085. The canonical text is published by the RFC Editor.
Abstract
There are deployments where the Layer 3 (L3) interface on which OSPF operates is a Layer 2 (L2) interface bundle. Existing OSPF advertisements only support advertising link attributes of the L3 interface. If entities external to OSPF wish to control traffic flows on the individual physical links that comprise the L2 interface bundle, link attribute information for the bundle members is required.
This document defines the protocol extensions for OSPF to advertise the link attributes of L2 bundle members. The document also specifies the advertisement of these OSPF extensions via the Border Gateway Protocol - Link State (BGP-LS) and thereby updates RFC 9085.
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 9356 is hosted at rfc-editor.org. Available in HTML,TXT,PDF,XML.
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