Cisco ARP


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Using the Address Resolution Protocol (ARP) we can discover the link layer address (MAC Address) associated with an IPv4 address on Cisco routers and switches. R1#show arp Protocol Address Age (min) Hardware Addr Type Interface Internet - 0c64.2b8d.2200 ARPA GigabitEthernet0/0 Internet 18 0c64.2bed.8a00 ARPA GigabitEthernet0/0 ! R2#show arp Protocol Address Age (min) Hardware…