nanog mailing list archives

Re: /24s run amuck... again

From: Ralph Doncaster <ralph () istop com>
Date: Fri, 19 Jul 2002 08:06:44 -0400 (EDT)


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

Current thread:

/24s run amuck... again Richard A Steenbergen (Jul 18)
- Verio filtering... Would be nice if they at least honored what they said... Phil Rosenthal (Jul 18)
  - Re: Verio filtering... Would be nice if they at least honored what they said... Jared Mauch (Jul 19)
- Re: /24s run amuck... again Ralph Doncaster (Jul 19)
- <Possible follow-ups>
- RE: /24s run amuck... again Alexander, Nathan M (Jul 19)