Command
Show Controller
Use
This command displays very detailed controller and interface information. Most of the time, you will only use this command to see if a serial link is a DCE or a DTE.
Syntax
Router#show controller <interface>
Example
In this example, we use show controller s1/1 | in DCE|DTE to see if the serial cable is DCE or DTE.
R1(config)#do sh controller s1/1 | in DCE|DTE |
Here is the full show controller output
R1(config)#do show controller M4T: show controller: base0 registers=0x3C800000, base1 registers=0x3C802000 base0 registers=0x3C800000, base1 registers=0x3C802000 base0 registers=0x3C800000, base1 registers=0x3C802000 base0 registers=0x3C800000, base1 registers=0x3C802000 |