Load balancing with 2 routers & one switch stack

Please explain more on how you need to accomplish load balancing? Is this for inbound, outbound, both?

Do you have public IP blocks to work with? Do you have two circuits from the same provider or from different providers?

Hi,

we have 2 circuits from the same provider using Ebgp to connect to our Data centre 3750 switche stack.

I have spoken to the WAN vendor and they said that the load balancing logic is done entirely on their routers and that the 3750 didnt have to do anything special.....

One thing I will mention is that the LAN interfaces on the WAN carrier CPE routers are on different subnets, but they said this would not be a problem.

My concern is on the switch side if anything needs to be considered/configured

cool thanks, and I assume that the Party that is advertising routes to the Routers via eBGP should be advertising the routes as equal cost (they are using pre-pending to achieve this)

Prepending is only needed when you are connecting to two different ISP's and advertising the same subnet(s). In fact, it's not really needed, but it gives you a little extra control when it comes to inbound traffic. You would still need to talk to your providers to make sure they are not using local-pref otherwise your prepending might not be effective.

However, since you said you have two circuit from the same provider, you shouldn't need any prepending, just two eBGP neighbors, advertise your subnets, and set the maximum-paths command.

In the end the internet is what it is... you'll never have perfect balance, but you should do pretty good.

its not internet its private WAN