A major problem facing researchers today in the field of ad hoc networks is safety and preservation of the integrity of such networks. Among the many attacks recorded in the literature, wormhole attack remains a severe attack and not completely solved, particularly in ad hoc network configuration where OLSR is used as routing protocol. In the article we have proposed a more effective method for...

Wireless Network devices, especially ad hoc Networks are typically battery-powered. The goal of this proposed work is to extend network lifetime by improving energy utilization in MANET routing. MANET is group of mobile nodes that form a network independently of any centralized administration. In MANET, power aware is challenge issue to improve the communication energy efficiency at individual ...

The innate dynamicity and complexity of mobile ad-hoc networks (MANETs) has resulted in numerous ad-hoc routing protocols being proposed. Furthermore, numerous variants and hybrids continue to be reported in the literature. This diversity appears to be inherent to the field—it seems unlikely that there will ever be a ‘one-size-fits-all’ solution to the ad-hoc routing problem. However, typical d...

This paper describes the implementation in OMNeT++ of a versatile protocol architecture for the simulation of 802.11 Wireless Mesh Networks (WMNs). The developed modules enable the routing at the 802.11 MAC layer as well as a packet forwarding technique based on label paths. The performance of the new architecture is compared with that of a typical IP OLSR ad hoc network proving that link layer...

The Optimized Link State Routing Protocol version 2 (OLSRv2) includes the ability to assign metrics to links and to use those metrics to allow routing by other than minimum hop count routes. This document provides a historic record of the rationale for, and design considerations behind, how link metrics were included in OLSRv2.

Group mobility has become more evidently a phenomenon that will occur to MANET applications. This paper presents an extension to one of the current MANET WG standards, namely, OLSR for such scenarios. The extension LANMAR+OLSR seeks to provide OLSR the functionality of Landmark Routing, a scalable routing protocol designed for large-scale MANETs exhibiting group mobility. This paper describes t...

A collaborative firewall can be realized in a multi-hop distributed wireless network when all or some of the nodes in the network agree on a filtering policy and enforce it when routing a packet. Cooperative firewalling introduces many challenges, how to distribute the rules, how to enforce them, how to reduce the global rule-set in order to limit the impact on the network performance. This pap...

Trust is an interesting criterion for analyzing and comparing network protocols. The goal of this paper is to explicit the different types of trust relations between entities which exchange routing information and establish a routing infrastructure based on the OLSR protocol. One such entity assumes the other entities will behave in a particular way and the relations coming from this trust beha...

Although there have been a number of performance studies of proactive mobile ad hoc network (MANET) routing protocols, little attention has been paid to the impacts of topology update strategies on routing performance. This paper presents an analysis of several topology update strategies for a proactive MANET routing protocol. The goal of this paper is to better understand how topology update s...

MANET networks are of prime interest for military networks. One of the proeminent routing protocols for MANET is OLSR, and indeed, OLSR has been used in many evaluations and experiments of MANETs. As OLSR is on its way to standardization, there are still a number of extensions that are useful and sometimes necessary for practical use of OLSR networks: such extensions are quality of service supp...