Selection of Loop-Free Alternates for Multi-Homed Prefixes

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Publisher: IETF
Doc Type: Standard
Pages: 20
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.
Publication Date: 2019-03-01
Status Note: Proposed Standard
DOI: 10.17487/RFC8518
Link: https://doi.org/10.17487/RFC8518
Author(s): Pushpasis Sarkar
Uma Chunduri
Shraddha Hegde
Jeff Tantsura
Hannes Gredler
Keyword(s): LFA, Multihoming, IGP

Latest version of IETF RFC 8518

Document Versions — IETF RFC 8518

▶ IETF RFC 8518 (2019-03-01)

THIS DOC [ACTIVE] [LATEST VERSION]

Normative Reference(s)

IETF RFC 2119 [Active*]
IETF RFC 5286 [Active*]
IETF RFC 8174 [Active*]

Bibliographic Reference(s)

IETF RFC 1195 [Active*]
IETF RFC 2328 [Active*]
IETF RFC 4915 [Active*]
IETF RFC 5120 [Active*]
IETF RFC 5304 [Active*]
IETF RFC 5305 [Active*]
IETF RFC 5308 [Active*]
IETF RFC 5310 [Active*]
RFC5714 — RFC5714 EXTERNAL
IETF RFC 5838 [Active*]
IETF RFC 6987 [Active*]
IETF RFC 7474 [Active*]
RFC7645 — RFC7645 EXTERNAL

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IETF RFC 5286 [Active*]

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IETF RFC 8518, Selection of Loop-Free Alternates for Multi-Homed Prefixes. Available at https://doi.org/10.17487/RFC8518

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IETF RFC 8518, Selection of Loop-Free Alternates for Multi-Homed Prefixes. Available at https://doi.org/10.17487/RFC8518

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IETF RFC 8518, Selection of Loop-Free Alternates for Multi-Homed Prefixes. Available at https://doi.org/10.17487/RFC8518

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<span class="citation"><cite>IETF RFC 8518</cite>, Selection of Loop-Free Alternates for Multi-Homed Prefixes. Available at <a href="https://doi.org/10.17487/RFC8518" target="_blank" rel="noopener">https://doi.org/10.17487/RFC8518</a></span>

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IETF RFC 8518, Selection of Loop-Free Alternates for Multi-Homed Prefixes
doi: 10.17487/RFC8518
url: https://doi.org/10.17487/RFC8518

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<li>
<cite id="bib-rfc8518">IETF RFC 8518</cite>, Selection of Loop-Free Alternates for Multi-Homed Prefixes
<span class="doi">10.17487/RFC8518</span>
</li>