我们正常查看思科交换机或路由器接口的光功率一般都是这样看的
SZ-IDC-SD-SW-9504-01# sh int ethernet 1/46 transceiver details
Ethernet1/46
transceiver is present
type is 10Gbase-SR-S
name is CISCO-AVAGO
part number is SFBR-709SMZ-CS2
revision is G4.1
serial number is AVD2101D7RK
nominal bitrate is 10300 MBit/sec
Link length supported for 50/125um OM2 fiber is 82 m
Link length supported for 62.5/125um fiber is 26 m
Link length supported for copper is 40 m
Link length supported for 50/125um OM3 fiber is 300 m
cisco id is 3
cisco extended id number is 4
cisco part number is 10-3105-01
cisco product id is SFP-10G-SR-S
cisco vendor id is V01
SFP Detail Diagnostics Information (internal calibration)
----------------------------------------------------------------------------
Current Alarms Warnings
Measurement High Low High Low
----------------------------------------------------------------------------
Temperature 25.33 C 75.00 C -5.00 C 70.00 C 0.00 C
Voltage 3.31 V 3.63 V 2.97 V 3.46 V 3.13 V
Current 5.96 mA 10.50 mA 2.50 mA 10.50 mA 2.50 mA
Tx Power -2.11 dBm 1.69 dBm -11.30 dBm -1.30 dBm -7.30 dBm
Rx Power -2.53 dBm 1.99 dBm -13.97 dBm -1.00 dBm -9.91 dBm
Transmit Fault Count = 0
----------------------------------------------------------------------------
Note: ++ high-alarm; + high-warning; -- low-alarm; - low-warning但是在思科的ISR4400路由器上比较特殊，上面的命令不可用。
需要使用下面的命令：
以思科ISR4431为例，查看G0/0/1接口的光功率
DG-IDC-KR-RT-4431-3#show hw-module subslot 0/0 transceiver 1 status
The Transceiver in slot 0 subslot 0 port 1 is enabled.
Module temperature = +25.144 C
Transceiver Tx supply voltage = 3312.0 mVolts
Transceiver Tx bias current = 3148 uAmps
Transceiver Tx power = -6.3 dBm
Transceiver Rx optical power = -4.9 dBm