How to check SFP if it receives power

[Ibrahim Jamil]

Hi Netpro

on the asr 1004 , how test and check  if the SFP receive power or signal from the MUX? any command to do that?

thanks

[Leo Laohoo]

If I am not mistake, UNLESS the SFP has a model with a "D" at the end, example GLC-SX-MMD or GLC-LH-SMD, then it's not possible.

If your have SFP+ then it's possible.

Have you tried "sh interface transceiver detail"?

[Juan Urti]

Yes, only with the SFP diagnostic option.

have you tried with the "sh int x/y transceiver"?

do you have a optical meter?

[johnlloyd_13]

hi,

you could use this command to check for SFP/transceiver power reading:

show hw-module subslot x/y transceiver z status

the output would look like something below and normal (average) power reading would be around negative 4-7 dbm.

The Transceiver in slot 0 subslot 0 port 2 is enabled.

  Module temperature                        = +44.640 C

  Transceiver Tx supply voltage             = 3273.8 mVolts

  Transceiver Tx bias current               = 24264 uAmps

  Transceiver Tx power                      = -5.7 dBm

  Transceiver Rx optical power              = -7.3 dBm