[41083] in North American Network Operators' Group
RE: multi-homing fixes
daemon@ATHENA.MIT.EDU (Iljitsch van Beijnum)
Wed Aug 29 13:15:04 2001
Date: Wed, 29 Aug 2001 19:12:19 +0200 (CEST)
From: Iljitsch van Beijnum <iljitsch@muada.com>
To: Randy Bush <randy@psg.com>
Cc: <nanog@merit.edu>
In-Reply-To: <E15aPAx-000JhO-00@rip.psg.com>
Message-ID: <20010829190621.K977-100000@sequoia.muada.com>
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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.
