[50126] in North American Network Operators' Group
Re: /24s run amuck... again
daemon@ATHENA.MIT.EDU (Ralph Doncaster)
Fri Jul 19 08:05:35 2002
Date: Fri, 19 Jul 2002 08:06:44 -0400 (EDT)
From: Ralph Doncaster <ralph@istop.com>
To: Richard A Steenbergen <ras@e-gerbil.net>
Cc: "nanog@merit.edu" <nanog@merit.edu>
In-Reply-To: <20020719051555.GQ99199@overlord.e-gerbil.net>
Errors-To: owner-nanog-outgoing@merit.edu
On Fri, 19 Jul 2002, Richard A Steenbergen wrote:
> With all the recent talk about filtering, I figured now was a good time
> to update my list of evil /24 announcers... There are currently over 63k
> /24s out of 113k total unfiltered announcements (over 55%).
Does anyone (Cisco, Juniper, etc.) have an auto-aggregation feature?
Let's say a router that receives the following prefixes under a single AS
206.51.128.0/24
206.51.129.0/24
206.51.131.0/24
And the following network is not in the table:
206.51.130.0/24
Then it would be usefull to collapse it into a single 206.52.128/22
aggregate (especially if the metrics & communities are the same).
-Ralph
