Microloop prevention by introducting a local convergence delay
draft-litkowski-rtgwg-uloop-delay-00
| Document | Type |
This is an older version of an Internet-Draft whose latest revision state is "Replaced".
Expired & archived
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|---|---|---|---|
| Authors | Stephane Litkowski , Bruno Decraene , Pierre Francois | ||
| Last updated | 2013-08-19 (Latest revision 2013-02-15) | ||
| Replaced by | draft-ietf-rtgwg-uloop-delay, draft-ietf-rtgwg-uloop-delay, draft-ietf-rtgwg-uloop-delay, RFC 8333 | ||
| RFC stream | (None) | ||
| Formats | |||
| Additional resources | |||
| 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) |
This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:
Abstract
This document describes a mechanism for link-state routing protocols to prevent a subset of transient loops during topology changes. It introduces a two-step convergence by introducing a delay between the network wide convergence and the node advertising the failure. As the network wide convergence is delayed in case of down events, this mechanism can be used for planned maintenance or for unplanned outage provided a fast reroute mechanism is used in conjunction to convert a failure into a less urgent topology change. Simulation using real network topologies and costs, with pathological convergence behaviour, have been performed. While the proposed mechanism does not provide a complete solution, it is simple and it solves an interesting fraction of the transient loops in the analyzed SP topologies.
Authors
Stephane Litkowski
Bruno Decraene
Pierre Francois
(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)