[133459] in North American Network Operators' Group
Level3/Comcast routing question (not related to the peering dispute)
daemon@ATHENA.MIT.EDU (David Hubbard)
Thu Dec 9 14:30:17 2010
Date: Thu, 9 Dec 2010 14:27:13 -0500
From: David Hubbard <dhubbard@dino.hostasaurus.com>
To: NANOG <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Customers of ours on Comcast are experiencing poor
throughput to us when whatever location they're at
takes a route to us via Level 3; Level 3 being
one of our upstreams. =20
I've set a community of 65004:7922 which is supposed
to tell Level 3 to prepend four times to Comcast
for our AS but the only route server I know of in
comcast land (route-server.newyork.ny.ibone.comcast.net)
is not showing the prepend. =20
Is there another way for me to determine if Level 3
is really doing the prepend other than opening a
ticket and asking them? I did try=20
http://www.level3.com/LookingGlass/ and plugged in
one of our IP's and see "Prepend_4_to_AS7922" so
could they be prepending and comcast overriding=20
or ignoring it? We have peering with another
provider that's directly connected with comcast so
I'd like to have traffic from them use that one instead.
Thanks,
David
