Mapping IP to MAC Using ARP

• The ARP protocol is used to map IP address to MAC addresses

  • Machine sends ARP request “Who is 159.91.15.220?”
  • The machine or another machine on the same network will respond “00:40:95:21:CB:38 is 159.91.15.220”
  • The MAC address is used to make the final delivery of the packet to the destination machine.

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