cisco交换机怎么查看光模块信息

show idprom interface G2/0/1 \\后面的G2/0/1是具体端口
你先使用show ip interface brief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#sh idprom interface GigabitEthernet8/4
Transceiver Serial EEPROM Contents:
Common block:
Identifier : Transceiver
Connector : SC connector [0x01]
Transceiver
Speed : [0x00]
Media : [0x00]
Technology : [0x00]
Link Length : [0x02]
GE Comp Codes : [0x00]
SONET Comp Codes : [0x00]
Encoding : 8B10B [0x01]
BR, Nominal : 12x100 MHz [0x0C]
Length(9u) : > 25.4 km [0xFF]
Length(50u) : 0 x 10 m [0x00]
Length(62.5u) : 0 x 10 m [0x00]
Length(Copper) : 0 m [0x00]
Vendor Name : CISCO-FINISAR
Vendor OUI : 0x0 0x90 0x65
Vendor PN : FTR-1519-CSC
Vendor rev : 1A
CC_BASE : 0x80

Extended ID Fields
Options : Loss of Signal implemented TX_FAULT signal implemented TX_DISABLE is implemented and disables the serial output
BR, max : Unspecified
BR, min : Unspecified
Vendor SN : FNS0834G1ZV
Date code : 040820
CC_EXT : 0x6
Vendor Specific ID Fields:
0x00: 00 00 02 30 92 99 B1 F2 6C DE 6F 09 58 F1 A9 04
0x10: F0 EF 84 00 00 00 00 00 00 00 00 00 E5 9D FB 29

Switch#show interfaces gigabitEthernet 0/24

在显示的信息里面找到下面这一行

Full-duplex, 1000Mb/s, link type is force-up, media type is 1000BaseLX SFP

其中media type is 1000BaseLX SFP 就是光模块儿的信息了
上面的意思是1310波长 单模光纤

show inventory 查看每个模块信息（包括板卡信息）
show int trans details 查看接口模块的光功率信息

你敢不敢再说清楚一点？