We have cisco 2821 routers connected to WAN with 2 ways.
With e1 (say E1 0/0) and Frame-relay (serial 2/0).
And also i have a main device connected through E1, say, Controller E1 0/1.
I need such a routing configuration that would tell my main device (E1 0/1) that primary link is down (E1 0/0).
Any help would be much appreciated.