How do I load balance BGP?

[jpoulos]

I am currently using Route maps and prepend statements, but is there a way that I can truly load balance with BGP? How do the ISP's do it?

Thanks in advance,

Jpoulos

CCNP, MCSE

[james.feger]

BGP is not designed to load balance traffic. You can load balance between multiple circuits between the same two router's, but not to different routers.

Example:

Router A has three DS3's to Router B

You setup three static routes from Router A to Router B's loopback address, and vice versa. You then build the BGP session to the loopbacks. This will balance the traffic.

[ruwhite]

Look for ibgp multipath for bgp load balancing. It doesn't sound like this is what you are trying to do, though....

Russ

[ywdi]

You can set LocalPreference value of the routing update to archive outgoing traffic load balance. Also you can set metric to the traffic comming to the AS.

[ramesh.krishnan]

hi,

as such bgp doesnt do any load balancing. what you can do is add 2 static routes thru the different interfaces thru wehich u connect to your upstream provider. then you can instruct the provider also to do the smae at his end. your load will be balanced then.

thanks,

ramesh