I have a backup wireless circuit attached to another device. Is there a way to automate a route change when my main frame circuit goes down? As in my router sees the interface down and re-routes traffic to another router without me manually making the change? I am using only static routes. Any ideas?
You certainly can use floating static routes without any interesting traffic. A normal static route and a floating static route both just indicate where to send traffic - when there is any traffic. The floating static route is a static route with a higher administrative distance. The floating static route will be inserted into the routing table if the normal static route (for the same prefix) is withdrawn from the routing table.
The concept of interesting traffic is generally associated with dial technology where you need interesting traffic to initiate a connection. It is not clear to me from the limited description of your environment whether you need to be concerned about interesting traffic or not. But the floating static route is certainly independent of the need for interesting traffic.