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Re: long as path games?
- From: Joe Provo
- Date: Mon Jan 31 13:24:32 2005
On Mon, Jan 31, 2005 at 09:37:57AM -0800, Blaine Christian wrote:
> Specifically, they have the ability to tickle a legacy cisco bug
> with AS path length. This bug was supposedly mitigated in code
> and I believe my previous company is still filtering AS path
> length (UUNET) of 100 or greater.
In recent years there have been issues with memory allocation on
the order of path-length ~50. Similar to bogon filters, it is
recommended to take a survey of sane path lengths before and your
own needs before deploying. Potentially useful data in this
regard is tracked by [suprise] cymru
In cisco-land, the max as-length was an undocumented command until
last year or so. a popular value appears to be in the 40-50 range
from folks I know using it.
RSUC / GweepNet / Spunk / FnB / Usenix / SAGE