DistanceVectorAnsätze

DistanceVectorAnsätze refers to a class of algorithms used in computer networking, primarily for routing. These algorithms operate by exchanging routing information between neighboring routers. Each router maintains a table that lists the estimated distance (or cost) to reach various destinations in the network. This distance is typically measured in hops, but can also be based on other metrics like bandwidth or latency.

The core principle of a Distance Vector algorithm is that each router advertises its current distance vector to its direct neighbors. A distance vector is a list of pairs, where each pair consists of a destination network and the cost to reach that network from the current router. When a router receives a distance vector from a neighbor, it updates its own routing table. If the received information indicates a shorter path to a destination than what the router currently knows, it updates its table with the new, shorter distance and the next hop router.

This process of exchanging and updating distance vectors is repeated periodically and whenever a change in the network topology occurs, such as a link going down or a new router being added. This allows the routing information to propagate throughout the network, eventually converging to a state where all routers have optimal paths to all destinations. However, Distance Vector algorithms can suffer from issues like routing loops and slow convergence in dynamic networks. Examples of Distance Vector routing protocols include RIP (Routing Information Protocol) and IGRP (Interior Gateway Routing Protocol).