[127790] in North American Network Operators' Group

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OER/PfR with BGP for inbound load sharing

daemon@ATHENA.MIT.EDU (Dylan Ebner)
Wed Jul 14 10:56:33 2010

From: Dylan Ebner <dylan.ebner@crlmed.com>
To: "nanog@nanog.org" <nanog@nanog.org>
Date: Wed, 14 Jul 2010 14:55:52 +0000
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org

Does anyone have any experience with using OER for inbound load sharing? I =
am looking to see if people are generaly satisfied with it's abilities or i=
f I should look for other options to balance my inbound traffic. I have two=
 connections (one 50Mb and one 25Mb) with partial BGP routes across two rou=
ters that I would like to move from an active/standby model to a more activ=
e/active model. Our organization moves very little information out of our f=
orward facing precessence servers so outbound balancing is not as important=
. Almost 80% of our inbound traffic is VPN as well so using application dis=
covery isn't that important either.

Some specific questions I have are:
Is OER aware of traffic-shape or bandwidth contstraints that are applied to=
 an interface?
Does OER simply add prepending for my advertised routes to my upstreams or =
does it actually prepend AS from inbound providers to move specific traffic=
 from an AS to one of my underutilized connections?
Does OER have to ability to control inbound traffic on a subnet level withi=
n the same AS? We receive a ton of data from a few AS numbers, so simply mo=
ving a single AS to a different connection may not be extremely effective.

Thanks.

Dylan Ebner


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