Topology Lightening and Forwarders Aggregation for Routing Based Network Flooding Bouamoud Bachir #1 , Habbani Ahmed *#2 , Guennoun Zouhair *3 # SIME Lab, MIS Team, ENSIAS, University of Mohammed V Rabat, Morocco * LEC Lab, SIME Team, EMI, University of Mohammed V Rabat, Morocco 1 bouamoud.bachir.b@ieee.org 2 m3s.ride@gmail.com 3 zouhair@emi.ac.ma Abstract—Control traffic optimization in Mobile ad hoc network routing protocols contribute to save many critical resources. That is why we are convinced that an efficient routing is based on efficient forwarding of topology control messages (information), also QoS requirements are a must in a way to obtain reliable and dynamic routing schema able to sense the network changes and to maintain network lifetime as long as possible. In this paper we present a novel approach to enhance proactive routing schemas and improve the design and operation of the large scale mobile ad hoc networks. The approach is mainly based on the topology lightning and multipoint relay aggregation. Our proposal was scrupulously experienced and has brought the expected results where the proposal reduces: the broadcasting delay, the number of forwarders and the size of topology control traffic .Also it lightens up to 20 % the perception of network topology. IndexTerms—broadcasting, neighbour knowledge, MPR lifetime, mobile ad hoc network (MANET), routing protocol, proactive schema I. INTRODUCTION Mobile ad hoc networks (MANETs) have become an important issue when deployment of classical network is not feasible, while it can be deployed without any further infrastructure; the communication system is established rapidly and efficiently. Mobile Ad hoc networks are multi- hop and self-organizing networks, where their structure changes dynamically [1].Indeed nodes in MANET use the concept of multi-hop forwarding and each node forwards and receives packets. Applications of this kind of network take place in situations like disaster, battlefield or fast deployed network for example when there is safety and security concern. A working group called “manet” has been formed by the Internet Engineering Task Force (IETF) to study the related issues and stimulate research in MANET [2]. Several research works are interested in MANET, some focus on physical layers, others focus on application layers and routing layers. Particularly, routing protocol gained a great interest in the researcher’s community and there have been several routing protocols designed for multi-hop ad hoc networks. These protocols cover a large range of approaches and design choices, from simple tuning of Internet protocols, to more complex schemes. However the enhancement made in the routing decision, protocols needs to enhance the broadcasting techniques that are based on. Indeed broadcast is a fundamental basic of many application and protocols in mobile ad hoc network. Moreover, broadcasting is frequently used to discover and advertise resources. Such as resource discovery reactive routing protocols or proactive routing protocol [3] where continuous network topology maintenance is performed. Actually mobility, battery depletion and various further effects cause links breakage and then frequent changes of network topology. Since the proactive routing schemas are more suitable for network whose topology is very dynamic. So our concern in this work is to enhance the proactive routing through the broadcasting mechanism. One idea that have been studied by many works before , is the usage of Multi point relay techniques , where only a set of nodes are authorized to broadcast message in the aim to advertise the topology information in the entire network. This technique is implemented in Optimized Link State Routing (OLSR) [4] which is one of the table-driven routing protocols for an ad hoc network. In this context we enhance the MPR broadcasting technique using neighbor knowledge in the aim to face the broadcast storm which causes a high traffic overhead make network resources more critical. In the following we are using OLSR as a case study of enhancement application ,however the enhancement made can also be applied in various context that need to resolve the Broadcast Storm problem (BSP) We present in this work a novel approach based on the aggregation in selection of multi-point relaying nodes and topology knowledge lightning The rest of the paper is organized as follows: In Section II we present some related literature. In section III we present an extended description of the key ideas of the proposal. Followed by Section IV that will contain further details about the simulation environment used for the work assessment. Then in section V, we discuss a set of results which concern the evaluation of the proposal. Finally, in Section VI we International Journal of Computer Science and Information Security (IJCSIS), Vol. 14, No. 12, December 2016 773 https://sites.google.com/site/ijcsis/ ISSN 1947-5500