What mechanism does OSPF use to ensure all routers in an area have complete and identical information about the network?Bellman-Ford algorithmSpanning Tree ProtocolLink-State Advertisements (LSAs)Distance Vector
Question
What mechanism does OSPF use to ensure all routers in an area have complete and identical information about the network?Bellman-Ford algorithmSpanning Tree ProtocolLink-State Advertisements (LSAs)Distance Vector
Solution
OSPF (Open Shortest Path First) uses Link-State Advertisements (LSAs) to ensure all routers in an area have complete and identical information about the network. Here's how it works:
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Each router in an OSPF network generates a Link State Advertisement (LSA) for each of its directly connected links (networks).
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These LSAs are then flooded to all other routers within the same hierarchical area. Flooding ensures that all routers in an area have the same topological information.
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Each router takes the LSAs and builds a Link State Database (LSDB). The LSDB is a data structure containing all the network's topology information.
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The router then runs the Shortest Path First (SPF) algorithm on the LSDB to compute the shortest path tree. This tree provides the shortest (least cost) paths to all the subnets.
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Finally, the router populates the routing table with the best paths it has discovered.
This process ensures that all routers in an OSPF area have a complete and identical understanding of the network.
Similar Questions
An OSPF routing protocol configured on router knows each node within its network domain and also the entire topology of that network domain.Question 2Answera.Falseb.True
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