Question

Compare Link state and Distance vector routing protocols at the network layer. The answer discusses the advantages and disadvantages of the protocols. The answer must also list examples of Link state and Distance vector routing protocols.

want APA reference

Answer 1

`Hey,

Note: In case of any queries, just comment in box I would be very happy to assist all your queries

OSPF protocol is the example link state routing.

RIP and IGRP is a commonly used distance vector protocol that uses hop counts or its routing metrics.

1. In distance vector routing the routers receive the topological information from the neighbour point of view. On the contrary, in link state routing the router receive complete information on the network topology.
2. Distance vector routing calculates the best route based on the distance (fewest number of hops). As against, Link state routing calculates the best route on the basis of least cost.
3. Link state routing updates only the link state while Distance vector routing updates full routing table.
4. The frequency of update in both routing technique is different distance vector update periodically whereas link state update frequency employs triggered updates.
5. The utilization of CPU and memory in distance vector routing is lower than the link state routing.
6. The distance vector routing is simple to implement and manage. In contrast, the link state routing is complex and requires trained network administrator.
7. The convergence time in distance vector routing is slow, and it usually suffers from count to infinity problem. Conversely, the convergence time in link state routing is fast, and it is more reliable.
8. Distance vector doesn’t have hierarchical structure while in link state routing the nodes can have a hierarchical structure.

In distance vector routing the routing share, the information of the entire autonomous system and the information is shared only with neighbours. On the other hand, in link state routing the routers share the knowledge only about their neighbours and the information is shared with all routers.

Kindly revert for any queries

Thanks.