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Consider this network of W routers. Assume all edges have cost 1, and the router

ID: 656431 • Letter: C

Question

Consider this network of W routers. Assume all edges have cost 1, and the routers use a distance vector routing protocol. (a) Show the contents of the initial routing table for router A at the start of the protocol. b) Suppose the following events happen in sequence: B advertises to all of its neighbors: then, after some time. C advertises to all of its neighbors: then later D advertises to all of its neighbors. Describe (or illustrate) the changes that router A will make to its routing table at each step as it receives each new advertisement Note that A only directly receives two of the three advertisements that are sent. You will also have to reconstruct a little bit of what is happening on other nodes. Assume all advertisements arrive at their destinations and are processed immediately, and the advertisements listed above are the only ones sent..

Explanation / Answer

Consider this network of W routers. Assume all edges have cost 1, and the router