Understand How the ARP Protocol Works
ARP(Address Resolution Protocol) is a protocol that finds the MAC address corresponding to an IP address. When communication occurs between devices on a network, it is necessary to find out the MAC address to deliver the packet to the destination. The Role of ARP Convert IP addresses to MAC addresses Identify devices that can communicate directly within the network Optimize performance through ARP caching Detect duplicate IP conflicts (using Gratuitous ARP) ARP Operation Process 1. ARP Request (ARP Request) When a host knows the destination IP address but not the MAC address, it broadcasts an ARP request to the network. ...