The Reverse Address Resolution Protocol (RARP) is the opposite of ARP. While ARP is used to map an IP address to a MAC address, RARP is designed to map a MAC address to an IP address. This protocol was more prevalent in the early days of networking when diskless workstations needed to obtain their IP address upon booting. Here's a basic overview of how RARP works: Initialization: When a diskless workstation boots up, it doesn't have any configuration, including its IP address. Instead, it has a MAC address that uniquely identifies it on the network. RARP Request: The diskless workstation broadcasts a RARP request packet onto the network. This request contains the MAC address of the workstation and asks, “I am having this MAC address, and what is its corresponding IP address?" RARP Server Response: A RARP server on the network responds to the request with a RARP reply packet. This reply contains the IP address associated with the MAC address from the request. Configuration: Upon receiving the RARP reply, the diskless workstation configures its network interface with the provided IP address. Now the workstation can participate in network activities like any other device.