nanog mailing list archives
Re: anyone else seeing very long AS paths?
From: Jared Mauch <jared () puck nether net>
Date: Mon, 16 Feb 2009 13:03:09 -0500
On Feb 16, 2009, at 12:57 PM, John van Oppen wrote:
I am also a bit leery of setting it much lower than the defaults due tothe 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 notethat 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?
Would you want your upstream to set an arbitrary limit on these announcements for you, or should the few wayward souls finally upgrade their code? If your upstream were to set a limit (64, 96, 128, 192, 255) what would you expect that to be and how should it be disclosed?
my opinion is that if you're going to operate in an active environment (eg: bgp) where messages are constantly being sent, you need to be an active participant in managing your risk. If you're not, perhaps you don't really need BGP since you can't afford the 'operational costs' of managing that asset.
- Jared
Current thread:
- RE: anyone else seeing very long AS paths?, (continued)
- RE: anyone else seeing very long AS paths? John van Oppen (Feb 16)
- Re: anyone else seeing very long AS paths? Andy Davidson (Feb 16)
- Re: anyone else seeing very long AS paths? neal rauhauser (Feb 16)
- RE: anyone else seeing very long AS paths? John van Oppen (Feb 16)
- RE: anyone else seeing very long AS paths? Jake Mertel (Feb 16)
- RE: anyone else seeing very long AS paths? Jon Lewis (Feb 16)
- Re: anyone else seeing very long AS paths? Tomas Caslavsky (Feb 16)
- RE: anyone else seeing very long AS paths? Leland E. Vandervort (Feb 16)
- RE: anyone else seeing very long AS paths? John van Oppen (Feb 16)
- RE: anyone else seeing very long AS paths? Jon Lewis (Feb 16)
- Re: anyone else seeing very long AS paths? Jared Mauch (Feb 16)
- RE: anyone else seeing very long AS paths? Jon Lewis (Feb 16)
- RE: anyone else seeing very long AS paths? Leland E. Vandervort (Feb 16)
- Re: anyone else seeing very long AS paths? Andy Davidson (Feb 16)
- RE: anyone else seeing very long AS paths? John van Oppen (Feb 16)
- Re: anyone else seeing very long AS paths? Nuno Vieira - nfsi telecom (Feb 16)
- Re: anyone else seeing very long AS paths? Adam Greene (Feb 16)
- Re: anyone else seeing very long AS paths? Michael Ulitskiy (Feb 16)
- Re: anyone else seeing very long AS paths? Paul Ferguson (Feb 16)
- RE: anyone else seeing very long AS paths? Jason Kalai Arasu (Feb 16)
- Re: anyone else seeing very long AS paths? Jens Ott - PlusServer AG (Feb 17)
- RE: anyone else seeing very long AS paths? Hank Nussbacher (Feb 16)
- Re: anyone else seeing very long AS paths? Florian Weimer (Feb 17)