Loop-free convergence using oFIB

Sun, 07/22/2007 - 21:38 by Pierre François


This draft 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 FRR 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

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.

Pierre Francois, Olivier Bonaventure, Mike Shand, Stewart Bryant and Stefano Previdi
Internet Draft, July 2007.
Full text
pdf    (29.9 KB)
Cite it
See here

IEEE Copyright Notice: This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.

ACM Copyright Notice: Copyright 1999 by the Association for Computing Machinery, Inc. Permission to make digital or hard copies of part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page or intial screen of the document. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, to republish, to post on servers, or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from Publications Dept., ACM Inc., fax +1 (212) 869-0481, or permissions@acm.org.

Springer-Verlag LNCS Copyright Notice: The copyright of these contributions has been transferred to Springer-Verlag Berlin Heidelberg New York. The copyright transfer covers the exclusive right to reproduce and distribute the contribution, including reprints, translations, photographic reproductions, microform, electronic form (offline, online), or any other reproductions of similar nature. Online available from Springer-Verlag LNCS series.