Thanks The arp command: arp -s InetAddr EtherAddr allows you to manually add an

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The arp command: arp -s InetAddr EtherAddr allows you to manually add an entry to the ARP cache that resolves the IP address InetAddr to the physical address EtherAddr. What would happen if, when you manually added an entry, you entered the correct IP address, but the wrong Ethernet address for that remote interface? What is the default amount of time that an entry remains in your ARP cache before being removed. You can determine this empirically (by monitoring the cache contents) or by looking this up in your operation system documentation. Indicate how/where you determined this value.

Explanation / Answer

What would happen if, when you manually entered an entry, you entered the correct IP address, but the wrong Ethernet address for that remote interface?

Once the router received the destination IP address the router will remove the IP address from the Ethernet frame and using ARP, it would get the correct MAC address of the destination.

What is the default amount of time that an entry remains in your ARP chache before being removed?

The amount of time an entry remain in the ARP cache, before being removed is called aging time and the default time is 20 minutes.

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