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Distance vector. . Assume each router knows its own address and cost to reach each of its directly connected neighbors. Bellman-Ford algorithm. . Distributed route computation using only neighbor’s info. Mitigating loops. . Split horizon and posion reverse.
In computer communication theory relating to packet-switched networks, a distance-vector routing protocol is one of the two major classes of routing protocols, the other major class being the link-state protocol. A distance-vector routing protocol uses the Bellman-Ford algorithm to calculate paths. A distance-vector routing protocol requires ...
Two main types of routing: 1-Static routing 2-Dynamic routing A routing protocol specifies how routers communicate with each other, disseminating information that enables them to select routes...
10 sty 2009 · If you need the shortest path distances to compute a solution for the TSP, then you are probably interested in matrices that contain all distances between your sources and destinations. For this you could consider Computing Many-to-Many Shortest Paths Using Highway Hierarchies .
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Distance Vector Algorithm. Pathologies: Bouncing and Counting to Infinity. Optimizations: Split Horizon and Poison Reverse. War Story: Synchronization of Routing Messages. The Routing Problem. Each router has several interfaces to links. Each router has unique node ID. Packets stamped with destination node ID.
Step-by-Step. c(x,v) = cost for direct link from x to v. . Node x maintains costs of direct links c(x,v) Dx(y) = estimate of least cost from x to y. . Node x maintains distance vector Dx = [Dx(y): y є N ] Node x maintains its neighbors’ distance vectors. .
