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 Working Group of the IETF.
Title : Loop-free convergence using oFIB
Author(s) : Mike Shand
Stewart Bryant
Stefano Previdi
Clarence Filsfils
Pierre Francois
Olivier Bonaventure
Filename : draft-ietf-rtgwg-ordered-fib-06.txt
Pages : 26
Date : 2012-06-10
This document describes a mechanism for use in conjunction with link
state routing protocols which prevents the transient loops which
would otherwise occur during topology changes. It does this by
correctly sequencing the FIB updates on the routers.
This mechanism can be used in the case of non-urgent link or node
shutdowns and restarts or link metric changes. It can also be used
in conjunction with a fast re-route mechanism which converts a sudden
link or node failure into a non-urgent topology change. This is
possible where a complete repair path is provided for all affected
destinations.
After a non-urgent topology change, each router computes a rank that
defines the time at which it can safely update its FIB. A method for
accelerating this loop-free convergence process by the use of
completion messages is also described.
The technology described in this document has been subject to
extensive simulation using real network topologies and costs, and
pathological convergence behaviour.
A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ietf-rtgwg-ordered-fib-06.txt
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
This Internet-Draft can be retrieved at:
ftp://ftp.ietf.org/internet-drafts/draft-ietf-rtgwg-ordered-fib-06.txt
The IETF datatracker page for this Internet-Draft is:
https://datatracker.ietf.org/doc/draft-ietf-rtgwg-ordered-fib/
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