BGP load balancing

Unanswered Question
Aug 11th, 2008

Hi,

We have two 7200 routes with 155m each b/w running primary/backup module.We like to utilize all the 310m b/w.We are running BGP peering with our service provider.

1-If we runn BGP load balancing on our WAN routers , will we face any asymetrical issue after configuring all BGP attributes.?

2- can any hardware device available for this ?

Regards,

I have this problem too.
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Giuseppe Larosa Mon, 08/11/2008 - 10:29

Hello Mohammed,

about your questions:

1) with BGP you can decide how to send outbound traffic so you can get load balancing in the direction to the ISP.

You can try to influence inbound traffic but results are not guaranteed.

If your routers are connected to two different service provider's routers I would expect some load balancing in inbound direction too.

If connected to the same router the provider should add maxium-paths 2 to itd BGP config to achieve inbound load-balancing.

For outbound load-balancing you can get it by using two HSRP groups or by originating two default routes in the IGP that you use.

2) you shouldn't need any external device just the correct config on your routers as described above

Hope to help

Giuseppe

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