anyone else seeing very long AS paths?

Jon Lewis jlewis at
Mon Feb 16 18:02:23 UTC 2009

On Mon, 16 Feb 2009, John van Oppen wrote:

> I am also a bit leery of setting it much lower than the defaults due to
> the possibility of filtering something my customers will care about...
> I am not sure what the best strategy is but what really bit a couple of
> our customers was their old IOSes that tore the sessions down.   I note
> that most of our customers speaking BGP had no issue just three out of
> about 25.
> What do people think is a reasonable maximum as-path length to enforce
> at ones edge?

I've been using 75 for years and have never seen it trigger on 
'legitimate' routes.

  Jon Lewis                   |  I route
  Senior Network Engineer     |  therefore you are
  Atlantic Net                |
_________ for PGP public key_________

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