[c-nsp] BGP Balancing

Paul Stewart paul at paulstewart.org
Sat Mar 20 14:39:53 EDT 2010


For inbound traffic our outbound traffic?  Or both?  MED's are not going to
help here...

Paul


-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Chris Gotstein
Sent: March-20-10 1:19 PM
To: cisco-nsp at puck.nether.net
Subject: [c-nsp] BGP Balancing

We are a small ISP that is multi-homed to 2 providers.  Each link is
45mbs and we are receiving full bgp routing tables from each provider.
I've been trying to load balance the traffic going out over these two
connections, but am looking for some advice on other tricks i can try.
Unfortunately, only one provider sends MED metrics, so i'm unable to use
the bgp med for path selection.  I'm currently using 'bgp bestpath
as-path multipath-relax' and 'maximum-paths 2'.   One link still gets
75% of the traffic, which i believe is do to the fact it has a lower ip
address than the other link.  Any suggestions on configurations i can
try to influence better path load balancing?

-- 
---- ---- ---- ----
Chris Gotstein, Sr Network Engineer, UP Logon/Computer Connection UP
http://uplogon.com | +1 906 774 4847 | chris at uplogon.com
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