[isp-bgp] TE practices when peered to two big upstreams?

["Colo Host" <ispcolohost@...>]

Hi all, I'm wondering if anyone has some good suggestions about
traffic engineering practices for those who are peered with two
major upstreams?  I've got connectivity with Level 3 and Global
Crossing and a third low end provider and the problem I'm finding
is that the majority of advertised prefixes are reachable through
both of the big boys in the same number of hops.  So my route
table tends to end up with most routes preferring the peer that
came up first or the longest established connection since most
other things in the decision making process are equal.  For example,
right now, I have 128,000 routes preferring Level 3 because Global
Crossing was cleared more recently than them and there's nothing
to make BGP want to use Global Crossing any more than Level 3 so
all the routes stick over there.  Now if there were an accurate list of
connections and utilization for major ISP's to their upstreams I could
use that to force traffic down the better path but obviously that
doesn't exist. :-)  What other ways exist to get this traffic a little
better distributed with most BGP decision making things being equal?

Thanks,

D







To unsubscribe via postal mail, please contact us at:
Jupitermedia Corp.
Attn: Discussion List Management
475 Park Avenue South
New York, NY 10016

Please include the email address which you have been contacted with.

Copyright 2005 Jupitermedia Corporation All Rights Reserved.