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Distance Vector Routing Protocol (DVRP) is a type of routing protocol used in computer networks to determine the best path for data packets to travel from a source to a destination. It is a decentralized routing protocol, meaning that each router in the network makes its own routing decisions based on the information it receives from its neighbors. The primary goal of DVRP is to minimize the total distance (or cost) of the path taken by the data packets.

In DVRP, each router maintains a routing table that contains information about the best known path to each destination in the network. This information is periodically exchanged between neighboring routers using routing update messages. The routing table is updated based on the distance vector information received from neighboring routers. If a router receives a routing update that indicates a shorter path to a destination, it updates its routing table accordingly.

One of the key features of DVRP is its simplicity and ease of implementation. However, it also has some limitations. For example, it can suffer from the count-to-infinity problem, where routers may endlessly increment the hop count for a path, leading to incorrect routing decisions. Additionally, DVRP can be slow to converge, meaning that it may take a long time for the network to reach a stable state after a change in the network topology.

Despite these limitations, DVRP is still widely used in many networks, particularly in smaller or less complex networks where its simplicity and ease of implementation are advantageous. It is also the basis for more advanced routing protocols, such as the Routing Information Protocol (RIP).