RFC 8518

Selection of Loop-Free Alternates for Multi-Homed Prefixes, March 2019

Canonical URL:
https://www.rfc-editor.org/rfc/rfc8518.txt
File formats:
Plain TextPDF
Status:
PROPOSED STANDARD
Updates:
RFC 5286
Authors:
P. Sarkar, Ed.
U. Chunduri, Ed.
S. Hegde
J. Tantsura
H. Gredler
Stream:
IETF
Source:
rtgwg (rtg)

Cite this RFC: TXT  |  XML

DOI:  10.17487/RFC8518

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Abstract

Deployment experience gained from implementing algorithms to determine Loop-Free Alternates (LFAs) for multi-homed prefixes (MHPs) has revealed some avenues for potential improvement. This document provides explicit inequalities that can be used to evaluate neighbors as potential alternates for MHPs. It also provides detailed criteria for evaluating potential alternates for external prefixes advertised by OSPF ASBRs. This document updates Section 6 of RFC 5286 by expanding some of the routing aspects.


For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 4844.


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