I am using cisco 2811 router with 1 WIC-1T card for serial interface
Both router is connected by serial (DCE/DTE) interface and and ip is set as follows:
router 1: 192.168.1.1 255.255.255.0
router 1: 192.168.1.2 255.255.255.0
Problem: line protocol is showing down .
Example bellow :
R1#show ip interface brief
Interface [...]