Updating arp table back dating job sizties wiring

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In response to the broadcast, each of neighboring terminals 110 to 140 looks up or examines its own ARP cache table and deletes the cached IP value of the terminal 150 when it is found to be present in its own cache table.The time period required for updating the ARP cache tables is not specified as a standard, but the time period is within a range of 2 minutes to 4 hours.Such an update scheme is configured in such a manner that each of the terminals broadcasts a request for the IP address and MAC address to the neighboring terminals and then the neighboring terminals transmit the desired address information in a unicast response.In an ad hoc network, the IP address of a specific terminal may be changed, to avoid collision with IP addresses of terminals, and also when a terminal becomes disconnected from the network.Therefore, use of only Un ARP leads to inefficiencies.

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