Explain difference between distance vector and link state routing.

Explain difference between distance vector and link state routing. 
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1 Answer

Answer :

Distance Vector Routing
Link State Routing
Routing tables are updated by exchanging information with the neighbours. 
Complete topology is distributed to every router to update a routing table.
It update full routing table.
It updates only link states.
It uses Bellman-Ford algorithm
It uses Dijkstra algorithm.
Distance Vector routing doesn‟t have any hierarchical structure. 
Link state routing works best for hierarchical routing design.
CPU and memory utilization is lower than Link state routing.
Higher utilization of CPU and memory than distance vector routing.
Bandwidth required is less due to local sharing, small packets and no flooding.
Bandwidth required is more due to flooding and sending of large link state packets.
Example protocols are RIP and IGRP.
Example protocols are OSPF and IS-IS.
Slow convergence.
Fast convergence.
Summarization is automatic
Summarization is manual. 
Easier to configure
Harder to configure
Count to infinity problem
No count to infinity problem
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