I have 1841 router with WIC-2T. S0/0/0 is connected to Branch-A and is working properly. As soon as i connected second V35 cable to S0/0/1, my S0/0/0 link to the branch-A breaks and there is TTL expired response from S0/0/0 interface. The S0/0/1 is not yet active at other end. My config to serial link is below.
ip address 10.1.1.1 255.255.255.252
ip helper-address 10.116.2.5
ip address 10.1.2.1 255.255.255.252
clock rate 2000000
What could be the reason.?