How do link-state routing protocols differ from distance vector routing protocols?
What will be an ideal response?
Link-state routing protocols differ from distance vector routing protocols in two primary ways. The first is that they do not route by rumor. Each router generates information about only its directly connected links, and these are passed around the entire network so every router in the area has an identical view of the network topology. Then the routers individually run an algorithm known as the Dijkstra algorithm to determine the optimal path through the internetwork.
The second major difference is that they do not periodically broadcast their entire tables. Link-state protocols build adjacencies with neighboring routers, and after an initial full exchange of information, they send only an update when a link state changes (for example, goes "up" or "down").
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