A COMPARATIVE ANALYSIS ON ROUTING PROTOCOLS OF MOBILE AD HOC NETWORK

In this modern era, Mobile Ad hoc Network (MANET) is widely used for its mobility and self-configuring features. Hence, a better security approach is needed for maintaining high level network performance in mobile ad hoc network. This paper presents the comparative analysis of quality of service (QoS) of MANET protocols. In this regard, three types of most widely used protocols, named, Ad hoc On-demand Distance Vector (AODV), Dynamic Source Routing (DSR) and Optimized Link State Routing Protocol (OLSR) have been used to analyze. Therefore, AODV is selected in distributed ad hoc setting for the path discovery. Also, AODV is a reactive improvement of Dynamic Destination Sequence Vector (DSDV) protocol. On the other hand, the number of route broadcast is decreased by source routes on demand in AODV, which is opposite of DSDV algorithm. In this research, the quality of service parameters of network paths are also included to develop trust in the links to defend from various attacks. Moreover, a comparative analysis of delay, congestion, packet losses, transit time between source and destination is illustrated on AODV and DSR. In simulation time, packet drop-outs and link failures for probe packets are examined and analyzed under network attack.