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Re: Serious network problems this AM - multicast related?


Chronological Thread 
  • From: Bill Owens <>
  • To: "William F. Maton Sotomayor" <>
  • Cc:
  • Subject: Re: Serious network problems this AM - multicast related?
  • Date: Fri, 4 Jan 2013 07:44:12 -0500

On Fri, Jan 04, 2013 at 07:17:44AM -0500, William F. Maton Sotomayor wrote:
>
> We've seen multiple outages between gigapops in Canada towards CANARIE,
> apparently due to a routing table leak that triggered some folks' maximum
> prefix settings on BGP peerings. But, maybe, that's a coincidence.

No, I don't think it was a coincidence - based on that lead I looked at the
BGP prefix graphs maintained by one of our member campuses and I see huge
jumps on both their NYSERNet connection and the direct NLR peering they
maintain. I think someone leaked about 328k routes, and in fact it looks as
though it happened twice (or a session reset and re-established).

We don't have max-prefix set on our large external connections like I2 and
NLR, but obviously we're going to have to do that. . .

Bill.



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