Introduction to Optimized link state routing protocol (OLSR) :

 OLSR is referred as the optimized link state routing protocol and it belongs to the proactive routing protocol in which the different types of the routes are always offered and available for the purpose of the routing. Topological changes decrease the transparency which is happened because of the network this protocol will make use of the MPR- multi points relays.

 Flooding can happen in the continuous process if more number of the topological changes takes within the networks and if there is a possibility that the similar types of the message is been transmitted towards the similar area for several times, this can leads to the typical situation which is already mentioned known as flooding. For reducing the flooding which is been happened because of the fake transmission the multi point relays could be utilized.  .

 By the means of the hello messages and by making use of the OLSR routing protocol and the Topology control, the identification and broadcast about the information and the link status that belongs to the node could be done towards the entire network in order to know the current status of the topology if it changes within the network. Generally the hello messages are  transmitted  at the specific node level, but while comparing to the messages of the Topology changes are been transmitted all over the network in order to identify the changes that will take place because of the process of the mobility of the nodes which are towards the topology that is been built.

The forwarding of topology is done by using the MPR- multipoint relays and it changes the messages and then this particular message can be transmitted as well as forward in a periodic manner towards the network every time when there is any alteration in the topology that is generated in the network. By the efficient use of MPR the information exchange which is towards the network could be easily decreased to a certain large level for the efficient working and it is even capable of decreasing the broadcast flooding to a certain amount. The OLSR is considered to be one of the most developed and is a one of the advanced versions of the link state algorithm by which the link state information is a kind of similar to that of the equivalent nodes. Establishment of  the OLSR  routing protocol insures that there are more chances to decrease the size of the control packets as well as the information that belongs to the subset of the links is been sustained rather than the entire link information of the particular network. By making the proper use of the MPR the optimization aspect can be easily attained by which the control information is been optimized.

From all the existing routing protocols available in the MANETs this particular protocol is to be considered as one of the best protocol. And  in order to obtain the optimality each and every node will be given the permit and subject to the hello message in order to recognize the information about the adjacent nodes of the network and then this process is required to recognize the numbers of the hop node. The size of topology changes size is high and it is forwarded towards the direction of networks and to complete this also there is a particular necessity for having the required knowledge if we had to change generate the topology for making some of the change in the adjacent available node .