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RFC 9860: Multicast-Only Fast Reroute (MoFRR) Based on Topology Independent Loop-Free Alternate (TI-LFA) Fast Reroute

In plain English — editorial summary, not part of the RFC

This document specifies the use of Topology Independent Loop-Free Alternate (TI-LFA) mechanisms with Multicast-only Fast Reroute (MoFRR) for Protocol Independent Multicast (PIM). The TI-LFA provides Fast Reroute (FRR) protection for unicast traffic in IP networks by precomputing backup paths that avoid potential failures. By integrating TI-LFA with MoFRR, this document extends the benefits of FRR mechanisms to multicast traffic, enabling enhanced resilience and minimized packet loss in multicast networks. The document outlines an optional approach to implement TI-LFA in conjunction with MoFRR for PIM, ensuring that multicast traffic is rapidly rerouted in the event of a failure.

Document record

Document ID
RFC9860
Published
October 2025
Authors
Y. Liu; M. McBride; Z. Zhang; J. Xie; C. Lin
Status
INFORMATIONAL
Stream
IETF
Area
rtg
Pages
14
Also known as
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The document record above — title, authors, date, status, stream, area, relationships, DOI and errata — is imported verbatim from the public RFC Editor index. The “in plain English” section is editorial: written by The metasystema editorial team, not part of the RFC. Where the two differ, the RFC text governs.

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canonical URL: /rfc/9860-multicast-only-fast-reroute-mofrr-based-on-topology-independent-loop-free-altern