I am in need of some assistance on configuring a Cisco router (1721, or 1841, or 2800) with Dual WAN and failover with route maps. Let me give some backround of the setup.
We have a Cisco 1721 router with a point to point T1 and a Comcast Cable connection with 5 static IP's.
We use the T1 for both voice and data with failover to the Comcast cable if the T1 were to fail. That setup works great but we get very minimal bandwidth on that T1 and would like to use the Comcast cable for data bandwidth while keeping the voice over the T1. We would also like these connections to failover to one another in the event one were to fail.
That being said. Both connections will be plugged into the same router The T1 in a CSU and the Comcast in an Ethernet WIC. I assume there are route maps involved for each VLAN (voice and data) but not sure how to route data traffic over the comcast without 2 public IP blocks from the comcast side.
Can anyone help?