How to determine physical location of an IP address.

I have a Procurve 2524 switch and need to find out what port an IP address is using.  How do I do this?
sfriskAsked:
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jgibbarCommented:
From the switch CLI use 'show arp' to find the mac address associated to the IP address; then use 'show mac-address' to find the port that the switch has learned that mac address from. This will either point you to the end device or an upstream source.

Here is a link to so other helpful HP CLI Commands as well: http://www.hp.com/rnd/pdfs/CLI_reference.pdf

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Dave BaldwinFixer of ProblemsCommented:
Doesn't make sense.  IP addresses on a computer use all the different ports that are needed for the different services like web browsing (80 and 443), email (25, 110, 465, 587, 995) and FTP (20, 21, and other 'random' ports).
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sfriskAuthor Commented:
I have an IP address showing up on my network for a device that I don't know where it came from. I'm trying to determine where it's connected and thought if I could find out what port it's showing up on the switch, I can track it back to the physical location in the building.
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Dave BaldwinFixer of ProblemsCommented:
So you want to know the Physical port, not the TCP service port, that it's connected to.
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uescompCommented:
Is it showing up in DHCP or have a static?  Could be a phone connected to wireless, does it have a device name?
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sfriskAuthor Commented:
It's showing up in DHCP and does have a device name.  
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sfriskAuthor Commented:
How do I get to the command line?
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sfriskAuthor Commented:
Thanks for you help.
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