![]() RIP and EIGRP is a commonly used distance vector protocol that uses hop counts or its routing metrics. The routers running a distance vector routing protocol will automatically send periodic updates even if there are no changes in the network. Distance vector routing algorithms periodically send all or parts of their routing table to their adjacent neighbors. The technique determines the direction (vector) and distance (hop count) to any network in the internetwork. The terms distance vector and link state are used to group routing protocols into two broad categories based on whether the routing protocol selects the best routing path based on a distance metric (the distance) and an interface (the vector), or selects the best routing path by calculating the state of each link in a path and finding the path that has the lowest total metric to reach the destination.ĭistance vector routing: In distance vector routing, a router need not know the entire path to every network segment, it only requires to know the direction or vector in which to send the packet. The purpose of any routing protocol is to dynamically communicate information about all network paths used to reach a destination and to select from those paths, the best path to reach a destination network. "Distance Vector" and "Link State" are terms used to describe routing protocols which are used by routers to forward packets between networks. ![]() ![]() Distance vector and link-state routing protocols ![]()
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