ARP - broadcasted to ff:ff:ff:ff:ff:ff (broadcast MAC...

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What is ARP and how does it work? ARP stands for Address Resolution Protocol. It is used to find MAC addresses based on IP addresses. ARP tables contain a list of IP addresses and their corresponding MAC addresses. If the sending host will have the destination IP, it will also require the destination MAC to send its data to that MAC address. It will check the ARP table to see if it can find the MAC address for that IP. If the MAC is not found, it will issue an ARP request to discover the destination MAC. ARP requests travel in broadcast mode. It
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Unformatted text preview: broadcasted to ff:ff:ff:ff:ff:ff (broadcast MAC address) and contain the frame header, and the ARP message. Message sent to all MAC addresses on a network. If a device matches its IP with the one in the ARP request, it replies to the source MAC with its own MAC address called an ARP reply. The broadcasting host will receive the ARP reply and add the destination MAC and IP to its ARP table. The sending host can then use the entry in the ARP table to send data to that destination....
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This note was uploaded on 04/18/2011 for the course DCN 386 taught by Professor Allison during the Spring '10 term at Seneca.

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