On Fri, Sep 09, 2005 at 11:12:25AM -0400, Drew Linsalata wrote:
Apologies for a post of an operational nature, but is anyone else seeing problems with AT&Ts 12/8 block?
From a New York router connected to Global Crossing and Peer 1:
border-1.nycmny> sh ip bgp 12.xxx.xxx.xxx
BGP routing table entry for 12.0.0.0/8, version 86901457 Paths: (2 available, best #1) Not advertised to any peer 3549 12956 26210 64.213.176.97 from 64.213.176.97 (208.50.59.1) Origin incomplete, metric 2602, localpref 100, valid, external, best, ref 2 Community: 232589665 232618104 13768 12956 26210, (received-only) 64.34.84.117 from 64.34.84.117 (216.187.124.10) Origin incomplete, localpref 100, external, ref 2
Route views is showing a 12/8 with a fair amount of dampening/flap penalties in the last 10-12 minutes.
Looks like 12956 is announcing some /8s to every peer and transit. Worse still, Sprint and GX are propagating it. This is not the first time that Telefonica has leaked a lot of garbage routes with serious network impact as a result (nor is it the second or third, actually). 12.0.0.0/8 64.0.0.0/8 65.0.0.0/8 I'd say both GX and Sprint have a lot to answer for right about now. -- Richard A Steenbergen <ras@e-gerbil.net> http://www.e-gerbil.net/ras GPG Key ID: 0xF8B12CBC (7535 7F59 8204 ED1F CC1C 53AF 4C41 5ECA F8B1 2CBC)