sw#show idprom interface gi1/0/49
 
General SFP Information
 -----------------------------------------------
 Identifier            :   0x03
 Connector             :   0x07
 Transceiver           :   0x00 0x00 0x00 0x01 0x00 0x00 0x00 0x00
 Encoding              :   0x01
 BR_Nominal            :   0x0D
 Vendor Name           :   CISCO-FINISAR   
 Vendor Part Number    :   GLC-SX-MM ---型号
 Vendor Revision       :   0x31 0x31 0x2E 0x30 ---版本号
 Vendor Serial Number  :   FNSxxxxxxx ----序列号   
 -----------------------------------------------

show inventory 看到的信息更直接

Command for CatOS Version 8.x for Cat4000 and Cat6000 Switches:
 Switch (enable)show sprom {mod/port} | include Vendor SN
 Command for CatOS Version other than 8.x for Cat4000 and Cat6000 Switches:
 Switch (enable)show sprom {mod/port}
 Command for IOS for Cat6500 Switch:
 Switch#show idprom interface gigabitEthernet {mod/port} | include Vendor SN
 Command for Cat4500 Switch:
 Switch#show idprom interface gigabitEthernet {module/port} | include Serial No.
 Command for CAT3750/3560/2970/2960/2918 Switches:
 Switch#show controllers ethernet-controller gigabitEthernet {mod/port} phy | include Serial Number
 EXAMPLE OF A CAT4500 SWITCH:
 Switch#show idprom interface gigabitEthernet 3/29 | include Serial No.
 Vendor Serial No. = ICF1020202U 
================
 show version
 show module all 查看本设备所插板
 件的参数
 show diags 查看机框序列号；
 板卡用show rsp chassis-info;7513
 查看板卡序列号：show diagbus;
 6509:show module （后面可跟参数）
 也可不用。
 show idprom (后跟参数)可查如风扇
 、电源等序列号;有的也可用：show 
hardware
 =====================
 

华三交换机对应的命令是：