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ARP (ADDRESS RESOLUTION PROTOCOL) ::

Address Resolution Protocol (ARP)::

 Summary For two machines in a data network to communicate, they know another physical machine (orMAC) addresses. By broadcasting Address Resolution Protocols (ARP), a host can dynamically discover the MAC layer address corresponding to a network layer address IP.

 Upon receipt of AMAC-layer address, IP devices create an ARP amount of recently acquired IP-to-MAC address mapping store, and in this way Arps broadcast when they want a device to recontact. If the device within a specified time, the cache entry flushed.

 In addition to Reverse Address Resolution Protocol (RARP) is used for layers mapMAC addresses IP addresses. RARP, which is the logical inverse of ARP, can be used by diskless workstations that are not their IP addresses to know when their boat.

 RARP relies on the presence of a RARP server with an entry MAC address table mappings-layer-to-IP.