In Cisco Catalyst switches running Cisco IOS, you can find the serial numbers using the following commands on the various models:
Catalyst 6509 switch:
Switch1#show idprom backplane
IDPROM for backplane #0
(FRU is 'Catalyst 6500 6-slot backplane')
OEM String = 'Cisco Systems'
Product Number = 'WS-C6506'
Serial Number = 'TBAxxxxxxxx'
Manufacturing Assembly Number = '73-3436-01'
Manufacturing Assembly Revision = 'A0'
Hardware Revision = 1.0
Current supplied (+) or consumed (-) = -A
On a Catalyst 4500/4000 switch,
Switch1#show idprom chasis
Chassis Idprom :
Common Block Signature = 0xABAB
Common Block Version = 1
Common Block Length = 144
Common Block Checksum = 4081
Idprom Size = 256
Block Count = 2
FRU Major Type = 0x4001
FRU Minor Type = 37
OEM String = Cisco Systems, Inc.
Product Number = WS-C4506
Serial Number = XXXXXXXXXXX
Part Number = 73-8107-04
Part Revision = 01
Manufacturing Deviation String = 0
Hardware Revision = 0.4
Manufacturing Bits = 0x0000
Engineering Bits = 0x0000
Snmp OID = 0.0.0.0.0.0.0.0
Power Consumption = 0
RMA Failure Code = 0 0 0 0
Chassis Block Signature = 0x4001
Chassis Block Version = 1
Chassis Block Length = 22
Chassis Block Checksum = 628
Feature Bits = 0x0000000000000000
MAC Base = 000a.4172.df40
MAC Count = 64
Catalyst 3750/3760/3550/2950/2970/2940/2900XL/3500XL:
Switch1#show version
…
…
…
Switch Uptime : 1 hour, 29 minutes
Base ethernet MAC Address : 00:0D:29:B4:3F:00
Motherboard assembly number : 73-7055-06
Power supply part number : 341-0034-01
Motherboard serial number : CAT07260438
Power supply serial number : PHI0708008X
Model revision number : A0
Motherboard revision number : A0
Model number : WS-C3750-24TS-E
System serial number : CATXXXXXXXX
Catalyst 2948GL3/4908G-L3/4980G-L3:
Switch1#show hardware
…
…
…
IDPROM Contents :
FRU Type : 0x0.0x0
OEM String : Cisco_Systems
Product Number : WS-C2948G-L3
Serial Number : FOX05330ADH
Mfg. Assembly No. : 73-4083-07
Mfg. Assembly Ver. : A0
Hardware Version : 1.7
FPGA Version : 0
SNMP IOD : 9.5.1.3.1.1.2.275
RMA Code : 0
Feature Bits : 0x00000000
MAC Address Base : 00:07:85:07:DC:00
Total MAC Addrs. : 1024
Catalyst 8510/8540:
switch1#show hardware
…
..
.
DS1201 Backplane EEPROM:
Model Ver. Serial MAC-Address MAC-Size RMA RMA-Number MFG-Date
——– —- ——– ———— ——– — ———- ————
C8510 2 68011735 0010073D2600 1024 0 0 Jun 02 1998
…
..
.
Cisco Catalyst 4500/4000 switch:
Switch1#show idprom chasis
Chassis Idprom :
Common Block Signature = 0xABAB
Common Block Version = 1
Common Block Length = 144
Common Block Checksum = 4081
Idprom Size = 256
Block Count = 2
FRU Major Type = 0x4001
FRU Minor Type = 37
OEM String = Cisco Systems, Inc.
Product Number = WS-C4506
Serial Number = XXXXXXXXXXX
Part Number = 73-8107-04
Part Revision = 01
Manufacturing Deviation String = 0
Hardware Revision = 0.4
Manufacturing Bits = 0x0000
Engineering Bits = 0x0000
Snmp OID = 0.0.0.0.0.0.0.0
Power Consumption = 0
RMA Failure Code = 0 0 0 0
Chassis Block Signature = 0x4001
Chassis Block Version = 1
Chassis Block Length = 22
Chassis Block Checksum = 628
Feature Bits = 0x0000000000000000
MAC Base = 000a.4172.df40
MAC Count = 64
Catalyst 3750/3760/3550/2950/2970/2940/2900XL/3500XL:
Switch1#show version
…
…
…
Switch Uptime : 1 hour, 29 minutes
Base ethernet MAC Address : 00:0D:29:B4:3F:00
Motherboard assembly number : 73-7055-06
Power supply part number : 341-0034-01
Motherboard serial number : CAT07260438
Power supply serial number : PHI0708008X
Model revision number : A0
Motherboard revision number : A0
Model number : WS-C3750-24TS-E
System serial number : CATXXXXXXXX
Catalyst 2948GL3/4908G-L3/4980G-L3:
Switch1#show hardware
…
…
…
IDPROM Contents :
FRU Type : 0x0.0x0
OEM String : Cisco_Systems
Product Number : WS-C2948G-L3
Serial Number : FOX05330ADH
Mfg. Assembly No. : 73-4083-07
Mfg. Assembly Ver. : A0
Hardware Version : 1.7
FPGA Version : 0
SNMP IOD : 9.5.1.3.1.1.2.275
RMA Code : 0
Feature Bits : 0x00000000
MAC Address Base : 00:07:85:07:DC:00
Total MAC Addrs. : 1024
Catalyst 8510/8540:
switch1#show hardware
…
..
.
DS1201 Backplane EEPROM:
Model Ver. Serial MAC-Address MAC-Size RMA RMA-Number MFG-Date
——– —- ——– ———— ——– — ———- ————
C8510 2 68011735 0010073D2600 1024 0 0 Jun 02 1998
…
..
.