Inventory

Showing information about the hardware connected to a Cisco device.

Basic port and SFP type is listed in the output of show interfaces status;

Gi1/0/2     disabled     1      auto   auto 10/100/1000BaseTX SFP

More detailed information on the installed modules can be obtained with show inventory;

NAME: "1", DESCR: "WS-C3750X-24S"
PID: WS-C3750X-24S-E   , VID: V03  , SN: <SERIAL_NUMBER>

NAME: "Switch 1 - Power Supply 1", DESCR: "FRU Power Supply"
PID: C3KX-PWR-350WAC   , VID: V02A , SN: <SERIAL_NUMBER>

NAME: "Switch 1 - Power Supply 2", DESCR: "FRU Power Supply"
PID: C3KX-PWR-350WAC   , VID: V03D , SN: <SERIAL_NUMBER>

NAME: "GigabitEthernet1/0/1", DESCR: "10/100/1000BaseTX SFP"
PID: GLC-T               , VID: V03  , SN: <SERIAL_NUMBER>

Much more detailed information on a single SFP can be obtained with show idprom interface <INTERFACE> (output truncated);

SFP+ Transceiver Module Serial EEPROM Contents:
Common block:
 Identifier        : SFP
 Connector         : LC connector [0x07]
 Transceiver
  Type             : SFP-10GBase-LR
  Speed            : [0x00]
  Media            : Single Mode (SM) [0x01]
  Technology       : [0x00]
  Link Length      : [0x00]
 Encoding          : serial encoding algorithm 10GE, 64B/66B [0x06]
 BR, Nominal       : 103x100 MHz [0x67]
 Rate Identifier   : [0x00]

 Length(9u)        : 10 km [0x0A]
 Length(50u)       : [0x00]
 Length(62.5u)     : [0x00]
 Length(OM3)       : [0x00]
 Vendor Name       : FLEXOPTIX       
 Vendor OUI        : 0x38 0x86 0x2 
 Vendor PN         : P.B1696.10.DA   
 Vendor rev        : A   
 CC_BASE           : 0x7D

From this view, the range (‘Length’), vendor, and part number can be obtained.