What does ARP do?
ARP resolves an IPv4 address to a MAC address on the local network: the host broadcasts "who has 10.0.0.1?" and the owner replies with its MAC, which is cached (show arp, arp -a).
ARP resolves an IPv4 address to a MAC address on the local network: the host broadcasts "who has 10.0.0.1?" and the owner replies with its MAC, which is cached (show arp, arp -a).