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

[Łukasz Bromirski]

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