[101928] in North American Network Operators' Group

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Re: Lessons from the AU model

daemon@ATHENA.MIT.EDU (Randy Bush)
Sun Jan 20 21:22:02 2008

Date: Mon, 21 Jan 2008 10:58:05 +0900
From: Randy Bush <randy@psg.com>
To: Martin Barry <marty@supine.com>
CC: nanog@merit.edu
In-Reply-To: <20080121014308.GP10494@supine.com>
Errors-To: owner-nanog@merit.edu


> Standard practice would be to localpref customer routes over peering routes.

unless unusual agreements exist with peers, this is pretty much normal 
config everywhere ever since vaf whacked asp and me in '96.  otherwise, 
if you peer multiple places, the peer sees inconsistent routes, which 
usually gets you a nastygram from rigorous peers.

> Likely to result in assymetric routing as the customer prefers peering
> routes over transit.

omg!  asymmetric routing on the internet!  world at eleven, end of news 
predicted! :)

meeting at multiple points and hot potato gets you asymmetry right off 
the bat.

randy

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