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I-D ACTION:draft-hardie-bounded-longest-match-04.txt

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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