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Consider the same distance vector protocol, but now with `triggered updates`. When link `B-C` fails, assume that `B` updates its routing table immediately and sends its distance vector to `A` and `D`. Assume that both `A` and `D` process the received distance vector and that `A` sends its own distance vector, ... Indicate all the distance vectors that are exchanged and update the table above each time a distance vector is sent by a router (and received by other routers) until all routers have learned a new route to each destination. How many distance vector messages must be exchanged until the network converges to a stable state ?
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