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Re: 12/8 problems?
- From: Richard A Steenbergen
- Date: Fri Sep 09 11:26:51 2005
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 22.214.171.124/8, version 86901457
> Paths: (2 available, best #1)
> Not advertised to any peer
> 3549 12956 26210
> 126.96.36.199 from 188.8.131.52 (184.108.40.206)
> Origin incomplete, metric 2602, localpref 100, valid, external,
> best, ref 2
> Community: 232589665 232618104
> 13768 12956 26210, (received-only)
> 220.127.116.11 from 18.104.22.168 (22.214.171.124)
> 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).
I'd say both GX and Sprint have a lot to answer for right about now.
Richard A Steenbergen <firstname.lastname@example.org> http://www.e-gerbil.net/ras
GPG Key ID: 0xF8B12CBC (7535 7F59 8204 ED1F CC1C 53AF 4C41 5ECA F8B1 2CBC)