There are two ways to tell the router how to forward packets to networks that are
not directly connected:
?– Static: The router learns routes when an administrator manually con?¬?gures the static route.
The administrator must manually update this static route entry whenever an internetwork
topology change requires an update. Static routes are user-de?¬?ned routes that specify the path
that packets take when moving between a source and a destination. These administratorde
?¬?ned routes enable precise control over the routing behavior of the IP internetwork.
?– Dynamic: The router dynamically learns routes after an administrator con?¬?gures a routing
protocol that helps determine routes. Unlike the situation with static routes, after the network
administrator enables dynamic routing, the routing process automatically updates route
knowledge whenever new topology information is received. The router learns and maintains routes
to the remote destinations by exchanging routing updates with other routers in the internetwork.
Dynamic routing relies on a routing protocol to disseminate knowledge. A routing protocol de?¬?nes
the rules that a router uses when it communicates with neighboring routers to determine paths to
remote networks and maintains those networks in the routing tables.
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