A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Routing Area Working Group of the IETF.
Title : Microloop prevention by introducing a local convergence delay
Authors : Stephane Litkowski
Bruno Decraene
Clarence Filsfils
Pierre Francois
Filename : draft-ietf-rtgwg-uloop-delay-01.txt
Pages : 22
Date : 2016-04-05
Abstract:
This document describes a mechanism for link-state routing protocols
to prevent local transient forwarding loops in case of link failure.
This mechanism Proposes a two-steps convergence by introducing a
delay between the convergence of the node adjacent to the topology
change and the network wide convergence.
As this mechanism delays the IGP convergence it may only be used for
planned maintenance or when fast reroute protects the traffic between
the link failure and the IGP convergence.
The proposed mechanism will be limited to link down event in order to
keep simplicity.
Simulations using real network topologies have been performed and
show that local loops are a significant portion (>50%) of the total
forwarding loops.
The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-rtgwg-uloop-delay/
There's also a htmlized version available at:
https://tools.ietf.org/html/draft-ietf-rtgwg-uloop-delay-01
A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-rtgwg-uloop-delay-01
Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at tools.ietf.org.
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
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