Difference between Link state and Distance vector

DVR stands for Distance Vector Routing Protocol :

• This protocol uses Bellman-Ford algorithm to calculate short and most preferred path in the network.
• Routers configured with DVR transmits whole routing tables to all their directly connected neighbors.
• These updates of routing tables is taken place periodically irrespective of network state.

LSR stands for Link State Routing Protocol :

• Link state protocols are based on Shortest Path First (SPF) algorithm to find the best path to a destination.
• Shortest Path First (SPF) algorithm is also known as Dijkstra algorithm, since it is conceptualized by Dijkstra.
• Link state protocol is performed by every switching node in network.

Overview of differences between Link state and Distance vector :

Category	DVR	LSR
Full Form	Distance Vector Routing Protocol	Link State Routing Protocol
Bandwidth	Less bandwidth requirement on account of small packets and no flooding of traffic.	More Bandwidth requirement as packets sizes are huge and there could be flooding of traffic.
Algorithm	Bellman-Ford Algorithm	Dijkstra Algorithm
Information base	Its working is dependent on local Information based (updates tables based on info collected from neighbours only)	Its working is dependent on global information base. (Routers using this protocols updates tables based on data collected from entire network)
Traffic	Less Traffic	More Traffic
Convergence	Slow convergence	Fast convergence
Looping	Persistent looping issue	No looping issue except transient loops
Implementation	Used in RIP and IGRP	Used in OSPF and ISIS