nanog mailing list archives

RE: multi-homing fixes


From: Iljitsch van Beijnum <iljitsch () muada com>
Date: Wed, 29 Aug 2001 19:12:19 +0200 (CEST)


Sorry for the late reply.

On Fri, 24 Aug 2001, Randy Bush wrote:

the /24s of small multihomers is half the routing table (see geoff's data)

This can't possibly be correct. The last figure I read was that there are
about 70k /24s. There are about 21k AS numbers out there. This means that
by far most of the announcements, including /24s, are the result of lack
of CIDR. Either because ISPs have a relatively large number of PA blocks
(address conservation) or because of lack of aggregation.


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