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OSPF - developed (1988) for IP networks by IETF ( Internet Engineering Task Force)
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interior gateway protocol
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specification RFC 1247
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based on SPF (shortest path algorithm = Dijkstra algorithm) developed in 1978 for ARPAnet; and a few other research efforts
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OSPF characteristics
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link-state routing protocol (link state information is used to calculate the shortest path to each node)
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routers exchange link-state advertisements (LSAs) with all routers within the same hierarchical area
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operates within the same hierarchy of routers; intra-autonomous system (AS - collection of networks under the common administration)
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