how do i get the IP address of the Machine

Unanswered Question
Apr 17th, 2009

suppose i connected one ip phone to the switch and one machin to that ip phone. i know only the MAC Address of the IP phone and i want to know the IP address of the system which is connected to the IP phone with the help of command on switch.... is thr any command on switch

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Adrian Saavedra Fri, 04/17/2009 - 06:18

Hi awdhoot_t,

In the switch, use the command:

Switch# sh mac-address-table interface

where is the switchport where you plug the IP Phone.

Then you can use sh arp.

Hope this helps you, if so please rate.

Best regards,

- Adrián.

Nicholas Matthews Fri, 04/17/2009 - 14:18

show mac- | i aaaa.aaaa.aaaa

Use mac address in lower case form.

Then if your output is similar to this:

232 000d.290b.e3af DYNAMIC Fa0/21

Do a 'show mac- | i Fa0/21'

This will tell you the other MAC on the port. Sh arp will not because it's a layer 3 command.


Adrian Saavedra Fri, 04/17/2009 - 16:20

Hello Nick,

But, he wants to know IP address of the machine attached to IP Phone...

Best regards,

- Adrián.


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