U-turn Alternates for IP/LDP Fast-Reroute
draft-atlas-ip-local-protect-uturn-03
| Document | Type | Expired Internet-Draft (individual) | |
|---|---|---|---|
| Last updated | 2006-03-07 | ||
| Stream | (None) | ||
| Intended RFC status | (None) | ||
| Formats |
Expired & archived
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| Stream | Stream state | (No stream defined) | |
| Consensus Boilerplate | Unknown | ||
| RFC Editor Note | (None) | ||
| IESG | IESG state | Expired | |
| Telechat date | |||
| Responsible AD | (None) | ||
| Send notices to | (None) | ||
https://www.ietf.org/archive/id/draft-atlas-ip-local-protect-uturn-03.txt
Abstract
This document defines and describes the use of U-turn alternates to provide local protection for IP unicast and/or LDP traffic in the event of a single failure, whether link, node or shared risk link group (SRLG). When a topology change occurs, a router S pre-computes for each prefix an alternate next-hop that can be used if the primary next-hop fails. An acceptable alternate can be either a loop-free alternate or a U-turn alternate. A U-turn alternate uses a neighbor, whose primary next-hop to the prefix is router S itself and which has itself a loop-free node-protecting alternate, which thus does not go through router S to reach the destination prefix.
Authors
Alia Atlas (akatlas@google.com)
(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)