Open Shortest Path First provides neighbourship between other OSFP routers by the help of OSPF messages. You can view detailed OSPF lessons below: This areas reduce the complexity of the network and opitmize routing tables. It is also prefered because of its secure character.Īs a hierarchical protocol, Open Shortest Path Firt divided into different Areas. In other words, OSPF is a fast converged protocol. OSPF is ideal for large networks and the convergence time of OSPF is very short. There are also different OSPF packets used for the messaging between OSPF routers. These updates are sent with LSA (Link State Advertisements). In OSPF, both periodic and triggered updates are used. In other words, it uses Shortest Path First (SPF) method and with this way, the routing calculation is done. Open Shortest Path First uses a special algorithm, Dijsktra Alogirthm for route calculations. Open Shortest Path First has similarities with the other Link-State routing protocol IS-IS but it differents from it in many points. It is a Classless routing protocol which do not send subnet masks with updates.
OSPF is a standard based Link-State routing protocol. OSPF (Open Shortest Path First), is one of the most used Routing Protocol today.
