Selection of Loop-Free Alternates for Multi-Homed Prefixes, March 2019
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- File formats:
- PROPOSED STANDARD
- RFC 5286
- P. Sarkar, Ed.
U. Chunduri, Ed.
- rtgwg (rtg)
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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.