[c-nsp] Research experiment disrupts Internet, for some

[Antonio Soares]

Now that i have more information I can tell you that you are 100% correct.
So let's upgrade the IOS-XR devices first then those running IOS. I'm
curious to see if the IOS issue is a known or new bug.


Regards,

Antonio Soares, CCIE #18473 (R&S/SP)
amsoares at netcabo.pt


-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Lukasz Bromirski
Sent: segunda-feira, 30 de Agosto de 2010 00:18
To: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] Research experiment disrupts Internet, for some

On 2010-08-29 19:59, Jared Mauch wrote:

> IOS-XR had a bug processing valid bgp updates.  This has happened
> in the past as well with 4-byte ASNs and other things over the
> years.

[...]

> If the software is old, they likely saw a bug.  If you don't
> maintain your BGP speaking devices software revisions, you will
> likely see problems.

What's most propable IMHO is that the GSR dropped the session to
BGP-speaker which was indeed IOS-XR box, then dCEF ran out of
memory on the LCs (for example because of memory fragmentation or
some bug indeed) and the issue happened.

This is of course based on incomplete data - if there was any
session directly established to IOS-XR box for starters.

-- 
"Everything will be okay in the end.  |                 Łukasz Bromirski
 If it's not okay, it's not the end." |      http://lukasz.bromirski.net
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