BGP Blowup?

Tim Wolfe tim at
Mon Dec 13 23:41:06 UTC 1999

So far the data is as follows:

1.  My BGP session to Sprint (1239) exceeded 75000 routes at approx 5:39pm PST
2.  Telestra seems to have had a similar surge from Uknown provider (or possibly
on their own network)
3.  Another individual reported that their GTEI (7176) session had a similar
4.  Yet another individual reported that their Digex session had a surge as

I guess I'm confused.  While 4 similar surges in table size at 3 distinct
locations is not by any means conclusive evidence that the global table was
experiencing wackiness, it certainly points a finger in the that direction. 
What perhaps bothers me more than the surge itself is that I have gotten
very few (read 1) responses to indicate that there were NOT a problem
similar to what I've reported.  I get the feeling that many people are not
tracking prefix counts so I'm am very nervous about future occurences.  At
what point does an event like this become a problem that gets noticed?  Does
it take a full meltdown of BGP speakers in a large providers network before
this is worth looking at?  I would think that a sudden random addition of
10,000 routes would be of concern to people who claim to be so worried about
the size of the world's routing tables.  Or is it only a concern if actually
affects your network?  I'm not attacking anyone, just concerned over the
apparent lack of concern...

It is interesting that all of the individuals that had direct UUNet sessions
didn't see any of the surge on those sessions.  Maybe they learned from the
MCI experience awhile back?

-- Tim

* Timothy M. Wolfe, Chief Network Engineer       *
* ClipperNet Corporation / It's a wireless world *
* tim at 800.338.2629 x 402	         *
* Sufficient for today = Inadequate for tomorrow *

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