az SFP-nek is tamogatnia kell, kb 5-10 eve kezdtek tudni, a regebbiek es az olcsobbak nem tudnak diagot sajnos.
#sh int Te2/0/1 transceiver
ITU Channel not available (Wavelength not available),
Transceiver is internally calibrated.
If device is externally calibrated, only calibrated values are printed.
++ : high alarm, + : high warning, - : low warning, -- : low alarm.
NA or N/A: not applicable, Tx: transmit, Rx: receive.
mA: milliamperes, dBm: decibels (milliwatts).Optical Optical
Temperature Voltage Tx Power Rx Power
Port (Celsius) (Volts) (dBm) (dBm)
--------- ----------- ------- -------- --------
Te2/0/1 34.0 3.22 -3.2 -3.0