[c-nsp] 3/11 (invalid or corrupt AS path)

[Tim Donahue]

Joe Provo wrote:
> On Mon, Feb 16, 2009 at 06:14:08PM +0100, Grzegorz Janoszka wrote:
>> 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
> [snip]
>> No, it is not software error, it is extremly long as-path:
> 
> The message itself, correct.  The flapping sessions observed on some
> code, the long path is indeed triggering some bug. It is immaterial 
> if it is the revival of an ld bug or a new one, there are folks 
> flapping over this (and related) paths.  Providers without some level 
> of sanity filters (really need many-multiples the current diameter of 
> the net?) should be shamed into limiting their customer's prepends.
> 

According to the NANOG thread on this, it would seem that the bug would
be CSCdr54230.

Tim