How to Check the Serial Number of Cisco Products?

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Do you have no idea to check your Cisco products’ serial number?

Here share ways to check some models’ serial number, including Cisco routers, Cisco switches, Cisco firewalls, etc.

Table 1. Check the Serial Number of Cisco Products

Router Buy License, need to check UDI Buy Smartnet, need to check serial no. Troubleshooting or return, need to check serial no.
cisco1921/1941 Type command “Show version” or check the box tag, or check serial number at the bottom of device. Type command “Show version” Type command “Show version”
cisco 2900 router Type command “Show version” or check the box tag, or check serial number at the bottom of device. Type command “Show version” Type command “Show version”
ISR4221/K9 Type command “Show version” or check the box tag, or check serial number at the bottom of device. Type command “Show version” Type command “Show version”
cisco 3900 router Type command “Show License UDI” Type command “Show version” Type command “Show version”
ISR4321/K9 Type command “Show License UDI” Type command “Show version” Type command “Show version”
ISR4331/K9 Type command “Show License UDI” Type command “Show version” Type command “Show version”
ISR4351/K9 Type command “Show License UDI” Type command “Show version” Type command “Show version”
ISR4431/K9 Type command “Show License UDI” Type command “Show version” Type command “Show version”
ISR4451-X/K9 Type command “Show License UDI” Type command “Show version” Type command “Show version”
Switch Buy License, need to check UDI Buy Smartnet, need to check serial no. Troubleshooting or return, need to check serial no.
2960x Type command “Show version” Type command “Show version” Type command “Show version”
C3850 No registration for this product (RTU license) Type command “Show version” Type command “Show version”
C3650 No registration for this product (RTU license) Type command “Show version” Type command “Show version”
C9300 Type command “Show version” Type command “Show version” Type command “Show version”
C9200 Type command “Show version” Type command “Show version” Type command “Show version”
C9400 Type command “Show version” Type command “Show version” Type command “Show version”
C9500 Type command “Show version” Type command “Show version” Type command “Show version”
Firewall Buy License, need to check UDI Buy Smartnet, need to check serial no. Troubleshooting or return, need to check serial no.
ASA5506 Type command “Sh ver” Check serial no. at the box or device’s bottom Check serial no. at the box or device’s bottom
ASA5508 Type command “Sh ver” Check serial no. at the box or device’s bottom Check serial no. at the box or device’s bottom
ASA5516 Type command “Sh ver” Check serial no. at the box or device’s bottom Check serial no. at the box or device’s bottom
ASA5525 Type command “Sh ver” Check serial no. at the box or device’s bottom Check serial no. at the box or device’s bottom
ASA5545 Type command “Sh ver” Check serial no. at the box or device’s bottom Check serial no. at the box or device’s bottom
ASA5585 Type command “Sh ver” Check serial no. at the box or device’s bottom Check serial no. at the box or device’s bottom
IP Phone N/A Buy Smartnet, need to check serial no. Troubleshooting or return, need to check serial no.
7800 ip phone N/A Type command “Show version” Check serial no. at the box or device’s bottom
8800 ip phone N/A Type command “Show version” Check serial no. at the box or device’s bottom
Wireless AP Buy License, need to check UDI Buy Smartnet, need to check serial no. Troubleshooting or return, need to check serial no.
AP1800/2800/3800 N/A Type command “Show version” Check serial no. at the box or device’s bottom
Wireless Controller Buy License, need to check UDI Buy Smartnet, need to check serial no. Troubleshooting or return, need to check serial no.
CT2504 Check serial no. at the box or device’s bottom Check serial no. at the box or device’s bottom Check serial no. at the box or device’s bottom
CT3504 No registration for this product (RTU license) Check serial no. at the box or device’s bottom Check serial no. at the box or device’s bottom
CT5508 Check serial no. at the box or device’s bottom Check serial no. at the box or device’s bottom Check serial no. at the box or device’s bottom
CT5520 No registration for this product (RTU license) Check serial no. at the box or device’s bottom Check serial no. at the box or device’s bottom

More:

Table 2. the common command of Cisco devices.

Command Description
terminal length 0 Set terminal display without restriction
show version View version, equipment running time
show inventory View serial number SN
show license View device license
show clock View device clock information
show fan View fan
show power View power
show env all Check equipment temperature, power supply, fan operating parameters and whether it has alarmed
show cpu View CPU
show memory View memory
show bootflash View flash
show log View log information
show running-config View device configuration
show ip protocol View routing protocol
show ip route View routing table
show ip route summary View route summary
show ip interface brief View the IP simple configuration information of all interfaces
show proc cpu View CPU
show proc cpu history View CPU
show proc mem View memory
dir View flash
show vlan View VLAN
show diagbus View router expansion port information
show module View switch board information
show buffer View system cache status
show cdp neighbors View basic information of linked Cisco devices
show ip ospf neighbors View OSPF link

If you need tech support, please feel free to contact us: ccie-support@router-switch.com

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