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Topology Independent Fast Reroute using Segment Routing

The information below is for an old version of the document.
Document Type
This is an older version of an Internet-Draft whose latest revision state is "Replaced".
Expired & archived
Authors Pierre Francois , Clarence Filsfils , Ahmed Bashandy , Bruno Decraene
Last updated 2016-02-18 (Latest revision 2015-08-17)
Replaced by draft-bashandy-rtgwg-segment-routing-ti-lfa
RFC stream (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


This document presents Topology Independent Loop-free Alternate Fast Re-route (TI-LFA), aimed at providing link and node protection of node and adjacency segments within the Segment Routing (SR) framework. This Fast Re-route (FRR) behavior builds on proven IP-FRR concepts being LFAs, remote LFAs (RLFA), and remote LFAs with directed forwarding (DLFA). It extends these concepts to provide guaranteed coverage in any IGP network. We accommodate the FRR discovery and selection approaches in order to establish protection over post-convergence paths from the point of local repair, dramatically reducing the operational need to control the tie-breaks among various FRR options.


Pierre Francois
Clarence Filsfils
Ahmed Bashandy
Bruno Decraene

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)