Routing And Switching Questions
Link-state routing is a routing algorithm used in computer networks where each router maintains a database of the network topology. In this concept, routers exchange information about their directly connected links with other routers in the network. This information includes the state of the link, such as its bandwidth, delay, and reliability.
By collecting and sharing this information, routers can build a complete map of the network, known as the link-state database. Using this database, routers can calculate the shortest path to reach a destination by considering factors like link cost and network congestion.
Link-state routing protocols, such as OSPF (Open Shortest Path First) and IS-IS (Intermediate System to Intermediate System), use this concept to dynamically update and maintain routing tables, ensuring efficient and reliable packet forwarding in the network.