处理交换机光路时，特别麻烦，因为手头也没光功率测量计，所以把光模块接入后，如果undo shut后，还不懂，就比较难搞了

现在在网上找到可以查看光功率的命令，分享下

[H3C]_hidecmd

Now you enter a hidden command view for developer's testing, some commands may

affect operation by wrong use, please carefully use it with our engineer's

direction.

[H3C-hidecmd]_display transceiver ?

 diagnosis  Diagnostic information

 interface  Display by interface

 register   Register information

[H3C-hidecmd]_display transceiver diagnosis interface GigabitEthernet 1/0/25

GigabitEthernet1/0/25 transceiver diagnostic information:

 Current diagnostic parameters:

   Temp(°C)  Voltage(V)  Bias(mA)  RX power(dBm)  TX power(dBm)

   54        3.41        17.65     -7.45