[c-nsp] Cisco 2801 router and WIC-1AM-V2 for outgoing internet traffic reduandacy

[Dave Lim]

Hello guys,

I have a customer will the following requirements. He is presently
using a Cisco 2801 router and internet connection is using a V.35
interface connected to a DSU.

He intends to have a outgoing internet traffic reduandcy such that
when the leased line fails, it will dial on demand the 56k line using
the WIC-1AM-V2.

Is this possible? I know this can be done if it is for dialing and
routing to remote sites whereby no NAT is required.

But as this uses NAT, how does the NAT failsover? How does the router
probe the leased line such that when it is done, it dials on demand
the 56k?

Anyone?
Cheers!