nanog mailing list archives

Re: lots of prepends


From: Randy Bush <randy () psg com>
Date: Fri, 20 Feb 2009 07:57:57 +0900

The only ill effect is if set it too low.... we tested it a bit
at 20-30 AS path length range figuring we shouldn't see *much*
and it was staggering over time.  The unfortunate thing more
related to your question is that we found some AS's that were
prepending 40-50 times to ALL their upstreams so with max-as set
too low we had no routing to them at all!

aha!  an idiot filter.  this could be a feature, not a bug.

randy


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