[147588] in North American Network Operators' Group
Re: local_preference for transit traffic?
daemon@ATHENA.MIT.EDU (Keegan Holley)
Thu Dec 15 02:25:56 2011
In-Reply-To: <CAPWAtbLg9WVC2xxhYbk55gsV88_ivzj3YDtDQV8Ftw_-W1k7cA@mail.gmail.com>
From: Keegan Holley <keegan.holley@sungard.com>
Date: Thu, 15 Dec 2011 02:24:13 -0500
To: Jeff Wheeler <jsw@inconcepts.biz>
Cc: NANOG <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
I always assumed that taking in more traffic was a bad thing. I've heard
about one sided peering agreements where one side is sending more traffic
than the other needs them to transport. Am I missing something? Would this
cause a shift in their favor allowing them to offload more customer traffic
to their peers without complaint?
2011/12/15 Jeff Wheeler <jsw@inconcepts.biz>
> On Thu, Dec 15, 2011 at 1:07 AM, Keegan Holley
> <keegan.holley@sungard.com> wrote:
> > Had in interesting conversation with a transit AS on behalf of a customer
> > where I found out they are using communities to raise the local
> preference
>
> That sounds like a disreputable practice.
>
> While not quite as obvious, some large transit ASes, like Level3,
> reset the origin to I (best) sometime between when they learn it and
> when they announce it to their customers and peers. This similarly
> causes them to suck in a bit more traffic than they might otherwise.
>
> --
> Jeff S Wheeler <jsw@inconcepts.biz>
> Sr Network Operator / Innovative Network Concepts
>
>
>
