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Mechanisms for safely abandoning loop-free convergence (AAH)

Document Type Expired Internet-Draft (individual)
Expired & archived
Authors Mike Shand , Stewart Bryant , Pierre Francois
Last updated 2008-10-31
RFC stream (None)
Intended RFC status (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date (None)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


IPFRR and loop-free convergence techniques can deal with single topology change events, multiple correlated change events, and in some cases even certain uncorrelated events. However, in all cases there are events which cannot be dealt with and the mechanism needs to quickly revert to normal convergence. This is known as "Abandoning All Hope" (AAH). This document describes the nature of the problem, and various proposed mechanisms to deal with it.


Mike Shand
Stewart Bryant
Pierre Francois

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