Loop-Free IP Fast Reroute Using Local and Remote LFAPs
draft-hokelek-rlfap-01
| Document | Type | Expired Internet-Draft (individual) | |
|---|---|---|---|
| Author | Ibrahim Hokelek | ||
| Last updated | 2008-02-26 (Latest revision 2007-07-05) | ||
| Stream | (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 | (None) | ||
| Responsible AD | (None) | ||
| Send notices to | (None) |
https://www.ietf.org/archive/id/draft-hokelek-rlfap-01.txt
Abstract
This draft describes a new loop-free IP fast reroute mechanism which enhances the IP Fast-ReRoute (IPFRR) [1,15] by introducing the concept of pre-computed remote Loop-Free Alternate Paths (rLFAPs) on top of the IPFRR local LFAP. In rLFAP, a router which is adjacent to the failed resource switches over to pre-computed LFAPs, if they exist, immediately after failure detection. Multi-hop neighbors (MNBs) are notified about this remote failure as quickly as possible using fast failure notification mechanism. Upon receipt of failure information, MNBs activate their pre-computed remote LFAPs that they maintain for protecting against remote failures within their multi-hop neighborhoods. In the worst case, where IPFRR results in forming micro-loops, rLFAP completely prevents micro-loops for single link failures and quickly converges to a loop-free path in case of multiple link failures.
Authors
(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)