Serial interface no clock

Alceo

What happen to a serial interface (DTE side) if it does not receive a clock signal?
It goes up/down or it remains up/up?

Sometimes real hardware is needed to test certain things
Can anyone try and post a show ip interface brief?

Thanks.

volfkhat

Hola,

I believe the command you want to check is:
show controller serial 1/0

the output would Normally say something about:
DTE V.35 TX and RX clocks detected


So to answer your question... i assume if you had a FAULTY Cable/interface....
your output would be missing "clocks detected" or also "DTE".
(just me guessing. i dont have any faulty cables to test it with)


However,
if you simply Forgot to Set the Clock rate (on the DCE side), then your output would be:
----
R2#show controllers serial 2/0
Interface Serial2/0
Hardware is PowerQUICC MPC860
DTE V.35 clocks stopped.
----

Hope that helps!


EDIT:
Okay, i just re-read your post.

Here's the output you requested (when i FORGET to set the Clockrate on the DCE side):
---
R2#show ip int brief
Interface IP-Address OK? Method Status Protocol

Serial2/0 10.0.0.2 YES manual up down
--
(this was done in packet tracer)