[14893] in North American Network Operators' Group
Re: The Cidr Report
daemon@ATHENA.MIT.EDU (Vince Fuller)
Mon Feb 2 11:22:20 1998
Date: Fri, 30 Jan 98 13:19:35 PST
From: Vince Fuller <xxvaf@valinor.barrnet.net>
To: Tony Bates <tbates@cisco.com>
Cc: nanog@merit.edu, eof-list@ripe.net, apops@apnic.net, routing-wg@ripe.net,
Pekka.Haara@hpy.fi
In-Reply-To: Your message of Fri, 30 Jan 1998 12:25:52 -0800
> As you can see things are startng to move up recently. I'd suggest
> folks take a look at the "Interesting Aggregates" section on the web
> page as it appears there's been a large influx of routes
> here. Particularly AS719 who look like they may have a config error
> with many many /28s showing up. They aren't the only ones as there
> seems to be a lot of potential savings to be made here just by
> eye-balling the aggregates.
It looks like AS 719 may have cleaned-up their act, but there is still a lot
of garbage in that section of the report. Most of them seem to be subnets of
/16's that all have the same AS path and therefore have no reason to not be
aggregated. 168.108.x.y, 166.102.x.y, 152.166.x.y-152.172.x.y, 129.81.x.y,
and 139.175.x.y are the most obvious offenders - all of the components of each
are singly-homed to a single AS path (yes, AS 1 has a couple of small ones
not listed above - I'll see about chasing those down). Others, like
161.11.x.y, 138.87.x.y, 137.15.x.y, 137.98.x.y, and 143.233.x.y appear to
be multi-homed but still shouldn't need to be propagated to the global
Internet.
If you're going to accept CIDR block subcomponents from your customers for
load-balancing or other purposes, please set community "no-advertise" or
otherwise prevent them from leaking out to the rest of the net - everyone
else doesn't need to see your trash...
--Vince
(note: from address modified to discourage spam)
