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Compare Link state & distance vector routing algorithm in 10 points

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Compare Link state & distance vector routing algorithm in 10 points

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  1. Algorithm Type: Link State Routing is a global type algorithm where each router has information about the whole network. Distance Vector Routing is a dynamic routing algorithm where each router shares information about its neighbors.

  2. Routing Information: In Link State Routing, routers have complete path information from source to destination. In Distance Vector Routing, routers only know the distance and the direction to the destination.

  3. Convergence Time: Link State Routing has faster convergence time than Distance Vector Routing. This means that Link State Routing can adapt more quickly to network changes.

  4. Resource Usage: Link State Routing uses more resources in terms of memory and CPU, as it needs to maintain detailed information about the entire network. Distance Vector Routing uses less resources as it only needs to maintain information about its neighbors.

  5. Scalability: Distance Vector Routing is more suitable for smaller networks due to its simplicity and lower resource usage. Link State Routing is more suitable for larger networks due to its ability to provide more accurate and efficient routes.

  6. Routing Table Updates: In Link State Routing, updates are sent to all nodes in the network. In Distance Vector Routing, updates are only sent between neighbors.

  7. Routing Protocols: OSPF (Open Shortest Path First) and IS-IS (Intermediate System to Intermediate System) are examples of Link State Routing protocols. RIP (Routing Information Protocol) and IGRP (Interior Gateway Routing Protocol) are examples of Distance Vector Routing protocols.

  8. Count to Infinity Problem: Distance Vector Routing is prone to the "count to infinity" problem, where it can take a long time for the network to converge in case of a network failure. Link State Routing does not have this problem.

  9. Complexity: Link State Routing is more complex to implement and manage due to its requirement of maintaining detailed network information. Distance Vector Routing is simpler to implement and manage.

  10. Reliability: Link State Routing is generally considered more reliable as it has a complete view of the network topology. Distance Vector Routing is less reliable as it only has information about its neighbors.

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