- Address Resolution Protocolsearch for term
A protocol in the Internet Protocol (IP) suite that enables a host to find the media access control (MAC) address of a target host on the same physical network when it knows only the target's IP address. ARP dynamically maps Internet addresses to MAC (hardware) addresses on local networks. It is limited to networks that support hardware broadcast.To create entries, the ARP broadcasts a request with the target's IP address. The target responds with its physical address. After the network board adds the physical address to its ARP table, it can then send packets to the target.