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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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OSPFv2 Overview OSPF (Open Shortest Path First) is a Link-State Routing Protocol. It is also Classless and an Open, Standard Protocol used by all vendors. OSPF uses Dijsktra Algortihm, a 
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TCP Options   The last part of this article series is related to TCP options. After this there is aleady the data part. In this section there are some options 
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