Topology Independent Fast Reroute using Segment Routing
draft-ietf-rtgwg-segment-routing-ti-lfa-01

Document Type Expired Internet-Draft (rtgwg WG)
Last updated 2019-09-06 (latest revision 2019-03-05)
Replaces draft-bashandy-rtgwg-segment-routing-ti-lfa
Stream IETF
Intended RFC status (None)
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Stream WG state WG Document
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at
https://www.ietf.org/archive/id/draft-ietf-rtgwg-segment-routing-ti-lfa-01.txt

Abstract

This document presents Topology Independent Loop-free Alternate Fast Re-route (TI-LFA), aimed at providing 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. A key aspect of TI-LFA is the FRR path selection approach establishing protection over the expected post-convergence paths from the point of local repair, dramatically reducing the operational need to control the tie-breaks among various FRR options.

Authors

Stephane Litkowski (stephane.litkowski@orange.com)
Ahmed Bashandy (abashandy.ietf@gmail.com)
Clarence Filsfils (cfilsfil@cisco.com)
Bruno Decraene (bruno.decraene@orange.com)
Pierre Francois (pierre.francois@insa-lyon.fr)
daniel.voyer@bell.ca (daniel.voyer@bell.ca)
Francois Clad (fclad@cisco.com)
Pablo Garvia (pcamaril@cisco.com)

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