Solved: Fiber optic cable check command

kilsoo.choi · ‎04-01-2009

I know that "show cable-diag tdr int [slot/port]" command can check 10/100/1000 etherent link. For example WS-X6748-GE-TX... etc.

But I can find any command to check gigabit only ethernet link. for example WS-X6724-SFP

Is there no command to check fiber link??

Thank you

Leo Laohoo · ‎04-01-2009

It's got nothing to do with your IOS. The command "show interface transceiver detail" will NOT work on non-DOM (Digital Optical Monitoring) modules, like the SFP. If you have a 10Gb module or the ruggedized SFP, try and this will work.

What are you trying to test on your cable?

View solution in original post

Leo Laohoo · ‎04-01-2009

What are you trying to test on the fiberoptic?

Have you tried "show interfaces transceiver detail"?

kilsoo.choi · ‎04-01-2009

I tried "show inter g3/3 tran det".

But the switch display below message.

Router#sh int g3/3 tran det

Diagnostic Monitoring Data is not available.

Could tell me why does switch display that message?

My switch' IOS version is 12.2(18)SFX5.

Leo Laohoo · ‎04-01-2009

It's got nothing to do with your IOS. The command "show interface transceiver detail" will NOT work on non-DOM (Digital Optical Monitoring) modules, like the SFP. If you have a 10Gb module or the ruggedized SFP, try and this will work.

What are you trying to test on your cable?

kilsoo.choi · ‎04-01-2009

Thanks for your answer.

I want to check a optical dBm at running switch. So I want to forecast a possiblity of optical link problem with low dBm.

Is there any way I want?

Thank you