I have a Cisco 1841 configured with serial WAN card and a HWIC 3G CDMA card.
Attachement one shows how we were operating. The T1 line was down and the HWIC ran as a "fail-over". Life was good. You will notice that we had the ip route as "0.0.0.0 0.0.0.0 Cellular0/1/0.
Once the T1 line came back up - we were shut down. Nothing in or out. We changed the the ip route to "0.0.0.0 0.0.0.0 Serial0/0/0" (see attachement two). We are up and running.
My concern, the HWIC is supposed to be a fail-over if the T1 goes down so my end-users can still get on the internet. As it sits now, if the T1 goes down, the card will kick in, but since the ip route is set to the Serial, no internet - I'm stuck.
Any help would be appreciated.