In the modern era, use of mobile wireless devices is increasing enormously which leads probers to frequently work over the new improvements in mobile ad hoc network i.e. MANET and routing protocols in MANET. The main aim behind this project is to compare the existing Reactive MANET routing protocols by using Opnet17.5 software. The focus of this paper is on reactive routing protocols (AODV and ...

Vehicle Ad-hoc Network is vulnerable to several attacks. One of the main attacks is the black hole attack which absorbs all the data packets in the network. In this paper, we have analyzed the performance of VANET in presence of black hole node by using different routing protocols AODV, DSR and AOMDV. This paper analyzed that which protocol is more vulnerable to the black hole attack and how mu...

s A mobile ad hoc network is collection of self-configuring and adaption of wireless link between communicating devices (mobile devices) to form an arbitrary topology without the use of existing infrastructure. In wireless network technology, simulative analysis is a significant method to understand the performance of routing protocol. In this paper an attempt has been made to compare the perfo...

Routing in mobile ad hoc networks is a challenging task because nodes are free to move randomly. In DSR like all OnDemand routing algorithms, route discovery mechanism is associated with great delay. More Clearly in DSR routing protocol to send route reply packet, when current route breaks, destination seeks a new route. In this paper we try to change route selection mechanism proactively. We a...

This paper revisits the issue of route discovery in dynamic source routing (DSR) for mobile ad hoc networks (MANETs), and puts forward a proposal of a lightweight non-optimal route suppression technique based on the observation of a rarely noted but commonly occurring phenomenon in route discovery. The technique exploits the observed phenomenon to extract query state information that permits in...

Extensive use of wireless networks in different fields increases the need to improve their performance, as well as minimize the amplitude of loss messages. Device mobility, where there is no standard topology that can be applied or fixed routing that can be designed, is a topic that received recent attention in wireless networks. In a Mobile Ad Hoc Network (MANET), some nodes may join the netwo...

Mobile Ad-hoc Network (MANET) is an infrastructure less and decentralized network which need a robust dynamic routing protocol. Many routing protocols for such networks have been proposed so far to find optimized routes from source to the destination and prominent among them are Dynamic Source Routing (DSR), Ad-hoc On Demand Distance Vector (AODV), and Destination-Sequenced Distance Vector (DSD...

Mobile Ad hoc Network (MANET) consists of a group of mobile nodes that can communicate with each other without the need of infrastructure. The movement of nodes in MANET is random; therefore MANETs have a dynamic topology. Because of this dynamic topology, the link breakages in these networks are something common. This problem causes high data loss and delay. In order to decrease these problems...

this paper presents a comparative test of two protocols namely-AODV and DSR in various mobility scenarios of Vehicular Ad-hoc NETworks (VANETs). In order to make comparison three performance criterions are selected which include number of packet drop, throughput and total time taken by Ns2 to simulate the given network. To carry out the simulation process an open source simulator tool is used f...

In this paper we evaluate the performance of the Stream Control Transmission Protocol (SCTP) in a wireless ad-hoc network environment under two routing protocols: DSR and AODV. Furthermore, we propose a cross-layer optimization to the SCTP and DSR protocols, that handles pro-actively route failures. The novelty in the proposed mechanism consists in the identification of route failures which is ...