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8.7 | TCP/IP Suite: Utilities |
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8.7.1 | How and when to use ARP to test, validate, and troubleshoot IP connectivity |
In TCP/IP, the Address Resolution
Protocol (ARP) is used to BIND (associate) the physical (MAC)
addresses with a specific logical (IP) addresses. When a data packet
is sent to a particular destination, ARP takes the addressing information
and matches it against the ARP cache for the appropriate MAC address.
If no matches are made, ARP sends out a broadcast message on the
network looking for the particular destination.
If duplicate IP addresses appear in he ARP
cache, a Windows NT 4.0 TCP/IP stack is written and a new ARP
broadcast is sent to each computer affected by the ARP cache error.
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