This is an old Cat 3560-48PS switch. There are two SM modules in this switch; only one is being used. Gi0/1 is the one in use.
Am I about to have this port fail?
Optical Optical
Temperature Voltage Tx Power Rx Power
Port (Celsius) (Volts) (dBm) (dBm)
--------- ----------- ------- -------- --------
Gi0/1 -26.2 0.63 -- -11.9 - -12.3
Gi0/2 31.9 3.30 -7.0 -40.0
This is the transceiver on the other end of it. Notice the Rx power compared to the Tx power above.
Optical Optical
Temperature Voltage Tx Power Rx Power
Port (Celsius) (Volts) (dBm) (dBm)
--------- ----------- ------- -------- --------
Gi1/1/4 32.0 3.29 -5.7 -5.9