showidprominterfaceG2/0/1\\后面的G2/0/1是具体端口 你先使用showipinterfacebrief确认你所在的光模块在哪个板卡端口，然后使用上面的指令去查看具体端口信息。 这是我查看自己路由器光模块的信息： ZHbdh-R7609-HX-2#shidprominterfaceGigabitEthernet8/4 TransceiverSerialEEPROMContents: Commonblock: Identifier:Transceiver Connector:SCconnector[0x01] Transceiver Speed:[0x00] Media:[0x00] Technology:[0x00] LinkLength:[0x02] GECompCodes:[0x00] SONETCompCodes:[0x00] Encoding:8B10B[0x01] BR,Nominal:12x100MHz[0x0C] Length(9u):>25.4km[0xFF] Length(50u):0x10m[0x00] Length(62.5u):0x10m[0x00] Length(Copper):0m[0x00] VendorName:CISCO-FINISAR VendorOUI:0x00x900x65 VendorPN:FTR-1519-CSC Vendorrev:1A CC_BASE:0x80 ExtendedIDFields Options:LossofSignalimplementedTX_FAULTsignalimplementedTX_DISABLEisimplementedanddisablestheserialoutput BR,max:Unspecified BR,min:Unspecified VendorSN:FNS0834G1ZV Datecode:040820 CC_EXT:0x6 VendorSpecificIDFields: 0x00:000002309299B1F26CDE6F0958F1A904 0x10:F0EF84000000000000000000E59DFB29

你敢不敢再说清楚一点？

Switch#showinterfacesgigabitEthernet0/24 在显示的信息里面找到下面这一行 Full-duplex,1000Mb/s,linktypeisforce-up,mediatypeis1000BaseLXSFP 其中mediatypeis1000BaseLXSFP就是光模块儿的信息了 上面的意思是1310波长单模光纤

showinventory查看每个模块信息（包括板卡信息） showinttransdetails查看接口模块的光功率信息