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RFC 9860
Title: Multicast-Only Fast Reroute (MoFRR) Based
on Topology Independent Loop-Free Alternate (TI-LFA)
Fast Reroute
Author: Y. Liu,
M. McBride,
Z. Zhang,
J. Xie,
C. Lin
Status: Informational
Stream: IETF
Date: October 2025
Mailbox: [email protected],
[email protected],
[email protected],
[email protected],
[email protected]
Pages: 14
Updates/Obsoletes/SeeAlso: None
I-D Tag: draft-ietf-pim-mofrr-tilfa-14.txt
URL: https://www.rfc-editor.org/info/rfc9860
DOI: 10.17487/RFC9860
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.
This document is a product of the Protocols for IP Multicast Working Group of
the IETF.
INFORMATIONAL: This memo provides information for the Internet community.
It does not specify an Internet standard of any kind. Distribution of
this memo is unlimited.
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