Depending on how that local network is configured, however, this cache will often remain empty. In Windows, for example, typing " arp -a" at the command (DOS) prompt will display all of the entries in that computer's ARP cache. On Windows and some other operating systems, the "arp" command provides access to the local ARP cache. This is one way to derive an IP address from a MAC address however, the mechanism is limited in many respects. There is no universal mechanism to determine an IP address given a known MAC address, although it can be done in certain specific situations.ĪRP maintains a list of both IP addresses and matching MAC addresses called the "ARP cache. Go to START->RUN and type CMD or COMMAND and hit ENTER) and the type "arp -a" and you will get a list of IP addresses and MAC Addresses.ĪRP was not designed to translate addresses in the other direction, however. Alain is right, RDP and telnet uses IP address.
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