JasWalker

Does anyone know how to in effect "ping" a mac address to generate an ip?

Pragma

Do you mean an ARP lookup to determine the IP from a MAC address?

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yodapaul

I'm not quite sure what your asking here, but as said above it sounds like an ARP request. ARP is part of the TCP/IP stack, you might be able to find a utility that will do the ARP lookup. However, if you are trying to do a ARP request on a web site, you might only get the address of your local Internet Gateway.

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JohnnyRoyale

I think you're thinking or RARP, which is Reverse Address Resolution Protocol. That will take a mac address and try and determine the IP.

Please note, however, that RARP is local subnet only, and is usually not forwarded across a router.

I think Linux comes with a rarp command, I know there's no built in RARP in Windows, you'll need to download something to get that.

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Pragma

You can, however, view the ARP cache in Windows by typing in a command prompt:
arp -a

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GoogleMeister

Gotta go with Pragma on this one. The easiest way to determine the IP related to a MAC address when all you have is the MAC address is by arp -a.

One question, though...

How is it that you have the MAC ddress and not the IP address?