File formats:

Also available: XML file for editing

 

Status:

PROPOSED STANDARD

Authors:

P. Psenak, Ed.
C. Filsfils
D. Voyer
S. Hegde
G. Mishra

Stream:

IETF

Source:

lsr (rtg)

Cite this RFC: TXT  |  XML  |   BibTeX

DOI:  https://doi.org/10.17487/RFC9929

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Abstract

Summarization is often used in multi-area or multi-domain networks to improve network efficiency and scalability. With summarization in place, there is a need to signal loss of reachability to an individual prefix covered by the summary. This enables fast convergence by steering traffic, when applicable, away from the node which owns the prefix and is no longer reachable.

This document specifies protocol mechanisms in IS-IS and OSPF, together with two new flags, to advertise such prefix reachability loss.

The term "OSPF" in this document is used to refer to both OSPFv2 and OSPFv3.

For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 8729.