[155445] in North American Network Operators' Group
Re: Bell Canada outage?
daemon@ATHENA.MIT.EDU (Andree Toonk)
Wed Aug 8 16:33:01 2012
Date: Wed, 08 Aug 2012 13:31:58 -0700
From: Andree Toonk <andree+nanog@toonk.nl>
To: nanog@nanog.org
In-Reply-To: <5022C2F6.4080400@toonk.nl>
Reply-To: andree@toonk.nl
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Further analysis shows that there were actually 107,409 prefixes
affected of 14,391 unique origin ASn's.
Interested if your prefixes was affected?
I've uploaded a list of prefixes and ASn's that were leaked here:
http://www.bgpmon.net/bell-leak.txt
Cheers,
Andree
.-- My secret spy satellite informs me that at 12-08-08 12:50 PM Andree
Toonk wrote:
> Hi,
>
> .-- My secret spy satellite informs me that at 12-08-08 11:35 AM Darius
> Jahandarie wrote:
>> On Wed, Aug 8, 2012 at 2:31 PM, Zachary McGibbon
>> <zachary.mcgibbon+nanog@gmail.com> wrote:
>>> Anyone at Bell Canada / Sympatico can tell us what's going on? Our routing
>>> table is going nuts with Bell advertising a lot of routes they shouldn't be
>>
>> Bell leaked a full table. To add to the fun, it seems that TATA took
>> the full table and releaked it.
>
> A quick analysis leads met to believe AS46618 ( Dery Telecom Inc) is the
> cause of this. AS46618 is dual homed to VIDEOTRON and Bell. What seems
> to have happened is that they leaked routes learned from VIDEOTRON to Bell.
>
> Based on BGP data I see that at 17:27 UTC AS46618 ( Dery Telecom Inc)
> started to leak a 'full table', or at least a significant chunk of it to
> its provider Bell AS577.
> Bell propagated that to it's peers. Tata was one of the ones that
> accepted all of that.
>
> I can see that Bell propagated at least 74,109 prefixes learned from
> AS46618 to Tata. Tata selected 70,160 of those routes.
>
>
> Cheers,
> Andree
>
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