local_preference for transit traffic?

Jeff Wheeler jsw at inconcepts.biz
Thu Dec 15 07:09:08 UTC 2011

On Thu, Dec 15, 2011 at 1:07 AM, Keegan Holley
<keegan.holley at 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 at inconcepts.biz>
Sr Network Operator  /  Innovative Network Concepts

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