ARP
Features:
1. Resolves layer-2 (OSI model) MAC addresses to layer-3 IP addresses
Task:
1. Examine MAC addresses using: ifconfig and arp
•ifconfig - returns our local MAC addresses
Link encap:Ethernet HWaddr 00:02:B3:98:41:08
•arp -a - returns MAC to IP mappings
Note:
•When 2 TCP/IP hosts communicate, ARP is performed to translate the IP address (v6/v4) to a MAC address.
•If a one or more routers separate the communicating hosts, then the MAC address
of the default router's (gateway's) interface is stored by each client