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OSPF Protocol can work in different network topologies. Some of these Network types are Standard and Some of them is Cisco Proprietary. Mainly,these networks types are given below: • Broadcast 
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What are the OSPF Area Types? OSPF uses an hierarchical architecture and build OSPF network with different Areas. There are many specific Area types that are used with OSPF and 
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In OSPF Link-State information, in other words,Routing information is exchanged between routers. This exchange is done with LSAs (Link State Advertisements). There are eleven different LSA types and each of 
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OSPF use OSPF Packet sto communicate and establish OSPF Operation. There are different Packet types in OSPF and in this article, we will focus on these OSPF Packet Types. We 
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OSPF Adjacency States Routers establish OSPF adjacency to use OSPF. From the beginning of the establishment to the full adjacency, there are some states. These states are mentioned below: OSPF 
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