[68521] in North American Network Operators' Group
Re: Load Balancing Multiple DS3s (outgoing) on a 7500
daemon@ATHENA.MIT.EDU (Stephen J. Wilcox)
Sat Mar 13 16:57:43 2004
Date: Sat, 13 Mar 2004 21:57:07 +0000 (GMT)
From: "Stephen J. Wilcox" <steve@telecomplete.co.uk>
To: "Patrick W.Gilmore" <patrick@ianai.net>
Cc: nanog@merit.edu
In-Reply-To: <49265B7E-74A7-11D8-919E-000A9578BB58@ianai.net>
Errors-To: owner-nanog-outgoing@merit.edu
> He'll be okie. It's just a little difficult for BGP to "load balance"
> outbound bits when the bulk of the Internet these days is 2 AS hops
> away from each of four upstreams. Not impossible, but it doesn't
> happen by default either.
I used to do this ages ago, I did it by setting MEDs on the incoming BGP
prefixes, in my route-maps I arbitrarily gave some nets (/8s or smaller) lower
med on one feed and higher on the others to influence path selection.
I shy away from anything but the gentlest of tweaks so I personally wouldnt mess
with as-path, localpref, weight etc
Steve
