I am running code 15.3.1.4patch1-44 on an x670v and the output of show port transceiver info detail gives me the requested information.
sho ports transceiver information detail
Port : 1
Media Type : SF+_SR
Vendor Name : FINISAR CORP.
Part Number : FTLX8571D3BCL-EX
Serial Number : 1353P-00470
Wavelength : 850 nm
Temp (Celsius) : 26.30 Status : Normal
Low Warn Threshold : -8.00 High Warn Threshold : 73.00
Low Alarm Threshold : -13.00 High Alarm Threshold : 78.00
Voltage AUX-1/Vcc (Volts) : 3.31 Status : Normal
Low Warn Threshold : 3.00 High Warn Threshold : 3.60
Low Alarm Threshold : 2.90 High Alarm Threshold : 3.70
Tx Power (dBm) : -2.18 Status : Normal
Low Warn Threshold : -5.00 High Warn Threshold : -1.00
Low Alarm Threshold : -6.00 High Alarm Threshold : 0.00
Rx Power (dBm) : -31.55 Status : Low Alarm
Low Warn Threshold : -18.01 High Warn Threshold : -1.00
Low Alarm Threshold : -20.00 High Alarm Threshold : 0.00
Tx Bias Current (mA): 7.66 Status : Normal
Low Warn Threshold : 5.00 High Warn Threshold : 12.60
Low Alarm Threshold : 4.00 High Alarm Threshold : 13.20
Are you running an older train of code? Do you get any output from that command?
