Static routing suitable for smaller networks and involves manual effort

Routing tables can be set up with fixed, predetermined static routes or compiled dynamically using routing protocols. Static routing is only suitable for smaller networks and involves manual effort. If routes to a destination change or if connections fail, the routers do not recognize this automatically and the routing tables must be adapted.

Dynamic routing automatically detects changes in the network as the routers exchange information and dynamically adapt the routing tables to the respective situation. Optimal paths to a destination can be determined on the basis of various properties and metrics such as the number of Freelance Avaya Certified Solutions Architect, bandwidth, utilization, or costs. Failures of individual connections are recognized and, if possible, alternative routes are calculated within a short time.

Dynamic routing protocols can be divided into link-state protocols and distance-vector protocols. Distance vector protocols such as RIP (Routing Information Protocol) determine the reachability of a destination using a vector. The vector holds information about the direction (the router interface to the next hop) and the distance (number of hops) to a specific destination. It communicates these vectors to other routers. In this way, the routers get to know the optimal neighbor for a specific destination but are not informed about the topology of the entire network. The problem of determining the shortest route to a destination is spread across several routers.

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