Link-State Routing

Link-State Routing

Link-state routing reduces the network traffic required to update routing tables. Routers that are newly attached to the network can request routing information from a nearby router.

After routers have exchanged routing information about the network, routers broadcast messages only when something changes. These messages contain information about the state of each link the router maintains with other routers on the network. Because routers keep each other updated, complete network routing updates are not needed often.