[86005] in North American Network Operators' Group
Re: /24 multihoming issue
daemon@ATHENA.MIT.EDU (Randy Bush)
Thu Oct 20 14:08:03 2005
From: Randy Bush <randy@psg.com>
Date: Thu, 20 Oct 2005 08:07:31 -1000
To: John Payne <john@sackheads.org>
Cc: Kyaw Khine <joekhine@yahoo.com>, nanog@merit.edu
Errors-To: owner-nanog@merit.edu
>>> Is 7018 preferring 19094 over 701 regardless of
>>> AS-PATH length?
>> the convention is that, if 19094 is a customer of
>> 7018, then it will always prefer it.
and it was confirmed that this is the case for the
prefix in question
> And this is a good reason not to cross "tiers" of your
> transit providers. Either have both "transit free" or
> both should have transit.
why? when it get up to tier-1s it will be the same, the
one(s) who heard it from customers will prefer the
customers.
and tier-Ns should be preferring customer routes as well;
see discussion here between vaf, asp, and me in about '96.
randy
