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Re: local_preference for transit traffic?
From: Keegan Holley <keegan.holley () sungard com>
Date: Thu, 15 Dec 2011 02:24:13 -0500

 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

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

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