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RE: Global view increase (was:BGP route explosion)

daemon@ATHENA.MIT.EDU (Stephen J. Wilcox)
Thu May 2 06:37:22 2002

Date: Thu, 2 May 2002 11:33:50 +0100 (BST)
From: "Stephen J. Wilcox" <steve@opaltelecom.co.uk>
To: James Spenceley <jrs@comindico.com.au>
Cc: "'neil@DOMINO.ORG'" <neil@DOMINO.ORG>, andrew@whine.com,
	nanog@merit.edu
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Message-ID: <Pine.LNX.4.21.0205021124540.30031-100000@staff.opaltelecom.net>
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We see that too

Predominantly seems to be massive amounts of /24s in a couple of nets
which were previously /16s. Culprit would appear to be AS705

*>i63.0.0.0/24      62.24.196.1                   100      0 286 209 701 705 i
*>i63.1.0.0/24      62.24.196.1                   100      0 286 209 701 705 i
*>i63.2.0.0/24      62.24.196.1                   100      0 286 209 701 705 i
.....

Lots of new /20-24 in 67.0.0.0/8 also AS705

In total AS705 is announcing 4432 new routes from yesterday.


If you're interested a copy of all new routes since yesterday is at:

http://noc.opaltelecom.net/newbgp020502.txt

THe file is 0.5Mb so I couldnt really email it :)

Steve



On Thu, 2 May 2002, James Spenceley wrote:

> 
> Around 15mins ago an additional ~5,000 routes entered the global view, sadly
> they appear to be hanging around. 
> 
> Last Tuesday had an increase of 2,000 routes. 
> 
> +7000 routes in a week is significant de-aggregation or leak, any ideas on
> where these routes are flowing ?
> 
> I've not seen an increase on any of our peers, so I can only assume its
> coming from a network who doesn't peer particularly "openly".
> 
> --
> James
> 


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