Hi,

Well you could just configure 2 static routes on the lan router, each one pointing to a different ISP, this will give you two default routes, and allow you to split the load across these.

Another way would be for you to ask the ISP's to send you partial routes and a default, that way they will send you all prefixes that they are responsbible for, ie part of their ISP setup, all of their customers etc. This way your router would use the closest match for routing to a specific ISP's local routes, and use the default for any other routes, not part of either ISP's local network.

ip route 0.0.0.0 0.0.0.0 1.1.1.1

ip route 0.0.0.0 0.0.0.0 2.2.2.2

Where 1.1.1.1 & 2.2.2.2 is the isp inside router address that connects to your router.

HTH

LR