E-Lab 9.3.6 - Troubleshooting using show controllers serial
In this lab you will use the show controllers command to see what cable is attached to the Serial interface.
By examining the show controllers command output, the type of cable that the controller detects can be determined.
This is useful for finding a Serial interface with no cable, the wrong type of cable, or a defective cable.
Step 1
Login to the router in privileged EXEC mode.
Step 2
Use the command show controllers on Serial 0/0 to see what cable is attached to the serial 0/0 interface.
Can you find where it says which end, DTE or DCE, is attached to the interface?