Date Added: Dec 2012
Open Shortest Path First (OSPF) is an Interior Gateway Routing Protocol, based on Shortest Path First (SPF) or link-state technology. Open Shortest Path First (OSPF) is a link state routing protocol which was first defined as version 2 in RFC 2328. This is used to allow routers to dynamically learn routes from other routers and to advertise routes to other routers. OSPF router keeps track of the state of all the various network connections (links) between itself and a network it is trying to send data to. This makes it a link-state routing protocol. OPtimized NETwork engineering tool (OPNET) modeler is an interactive Graphical User Interface (GUI) that provides hierarchical structure of problem solving.