In which routing method do routers within the same routing area maintain a…

Concept

A routing method determines what network information routers exchange and how each router calculates paths. In link-state routing, routers flood link-state advertisements throughout an area, allowing every router in that area to construct a synchronized link-state database representing the topology.

Application

1. Each router discovers the state and cost of its directly connected links and originates link-state advertisements.

2. The advertisements are flooded through the routing area, so routers receive the same topology facts and build synchronized link-state databases.

3. Each router runs a shortest-path-first calculation, commonly the Dijkstra algorithm, on its local database copy to derive routes.

Cross-check and contrast

• Distance-vector routing exchanges distance and next-hop vectors with neighbors rather than flooding a complete topology description.

• Path-vector routing advertises complete path information and policy attributes, primarily for inter-domain routing.

• The Dijkstra algorithm is a path-computation procedure used after topology information is available; it is not the routing-information exchange method.

Therefore, the routing method in which routers within the same routing area maintain a synchronized topology database is link-state routing.