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A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : Bounding Longest Match Considered
Author(s) : T. Hardie, R. White
Filename : draft-hardie-bounded-longest-match-04.txt
Pages : 8
Date : 2002-11-7
Some ASes currently use length-based filters to manage the size of
the routing table they use and propagate. This draft explores an
alternative to length-based filters which allows for more automatic
configuration and which provides for better redundancy.
Rather than use a filter, this draft proposes a method of modifying
the BGP longest match algorithm by setting a bound on the prefix
lengths eligible for preference. A bound would operate on long
prefixes when covering route announcements are available; in certain
circumstances it would cause a router to prefer an aggregate over a
more specific route announcement.
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