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

["David G. Andersen" <dga () lcs mit edu>]

This is more w.r.t. the huge burst of announcements yesterday,
not a persistent increase in the routing table sizes, but..

We saw absolutely huge amounts of announcements from
1 3459 17676 (sometimes with padding)

For example, see:

http://ginseng/bgpview.cgi?time=between&start=2002-05-01+06%3A00%3A00&end=2002-05-01+07%3A00%3A00&bins=100&prefix=&rel=eq&aspath=&asrel=contain&origin_as=17676&scale=linear&table=updates_new&action=plot&View=View

(Sorry for the long URL).  Shows that we received something like 30k 
announcements that originated from 17676 between 6 and 7 am on May 1st.
They were primarily announcing /23s out of large address space ranges
allocated to APNIC, like 219.31/16 and friends.

  -Dave


On Thu, May 02, 2002 at 11:33:50AM +0100, Stephen J. Wilcox mooed:
> 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

-- 
work: dga () lcs mit edu                          me:  dga () pobox com
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