CS402: Computer Communications and Networks

The Address Resolution Protocol (ARP) is a vital network function that translates IP addresses to MAC addresses. ARP comes into play when a network device, such as a host or router, needs to determine the MAC address associated with a known IP address in the same local network to facilitate direct communication. In this video, you will see how a device broadcasts an ARP request to retrieve the MAC address of another device. This process ensures that data is transmitted to the correct recipient. As you watch, consider the enhanced efficiency ARP provides to network operations. Be prepared to discuss the potential impact on data transmission if ARP were unavailable and the role ARP plays in directing data to the correct device in a network.