3/11 (invalid or corrupt AS path)

Dave Israel davei at otd.com
Mon Feb 16 17:03:17 UTC 2009

We're seeing them from AS 48438, coming across to us as an Optional
Transitive Attribute which our force-10s are not parsing (but cheerfully
passing along to our clients, who are then flapping their peers because
of it.)   Sample route;

Ozar wrote:
> I am starting to see random BGP neighbor messages from multiple neighbors on
> different boxes.
> %BGP-3-NOTIFICATION: received from neighbor X.X.X.X 3/11 (invalid or corrupt
> AS path) 516 bytes
> I dont see much documentation on this, and we are in the process of opening
> a TAC case, just curious if anyone else has seen these and may be able to
> shed some light.
> Thanks

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