Static Versus Dynamic Routing

Static routing is the method by which the network administrator manually enters routing entries on the router. The forwarding table is not learned by speaking with other routers on the network; these entries do not change unless the administrator alters them. The main benefit of static routing is that no routing protocol traffic is generated by the router. The drawback is that routers with static routes cannot react to network changes. Static routing is recommended for hub-and-spoke topologies with low bandwidth.

Dynamic routing protocols build routing tables from information received from other routers in the internetwork. In the event of a network change, they can recalculate the best routes to a destination.

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