Open Shortest Path First Open Shortest Path First (OSPF) - TopicsExpress



          

Open Shortest Path First Open Shortest Path First (OSPF) link-state routing protocol is designed to be more scalable and efficient than Routing Information Protocol (RIP). Consider the following OSPF features: n Runs on IP and uses protocol 89. n Classless with variable: Length subnet mask (VLSM) support. n Uses multicasts (224.0.0.5–all shortest path first [SPF] routers; 224.0.0.6: Designated Router [DR]/ Backup Designated Router [BDR]) for hellos and updates. n Plain text and Message Digest Algorithm 5 (MD5) authentication available. Null authentication is the default. n Dijkstra’s algorithm is used to produce a shortest-path tree for each destination. Link-state advertisements are used to build a database of the topology
Posted on: Thu, 30 Jan 2014 13:07:08 +0000

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