Serial Number of a Cisco router

Unanswered Question
Apr 1st, 2008
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What is the Cisco CLI command to be used to find the serial number and model number of a cisco equipment?

Please guide me.

Thanks and Regards,


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Overall Rating: 5 (2 ratings)
guruprasadr Tue, 04/01/2008 - 03:12
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HI Venkat, [Pls Rate if HELPS]

Execute below commands:

sh version

>> To verify the Model No # and IOS Software installed currently.

sh inventory

>> Provide the Serial No # of the Equipment and the other accessories installed.

Pls Rate if Helps

Best Regards,

Guru Prasad R

Richard Burts Tue, 04/01/2008 - 04:34
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Guru has given two commands which MAY provide the correct information. Unfortunately neither command works consistently to provide the serial number. In particular I would be careful about the show inventory command. In my experience it produces the correct serial number on some routers (especially the ISR series of routers) but on other routers it produces output that is not the serial number. Before I execute the show inventory command on a remote router and trust the output, I would suggest trying it on a router of that model where you can physically verify the output of show inventory.



Lavanholy Thu, 04/03/2008 - 01:39
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Hi Guru/Rick,

Thanks a lot,

Best Regards,


Danilo Dy Tue, 04/01/2008 - 04:42
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I agree with Guru and Rick.

If you can physically access the router, better compare both CLI and physical label.

I mentioned this because I experienced having 2 PIX Firewall in which the physical label interchanged :)


Physical label: XXXXXXXXXX02B



Physical label: XXXXXXXXXX01A


Common sense dictates that the CLI is correct :)



cisco_lad2004 Tue, 04/01/2008 - 11:14
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some times it is platform Dependant.

4500 for example use "show idprom chassis"


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