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Due to the inherent property of mobile ad hoc network, nodes in this environment move arbitrarily or illogically. Due to the mobility of nodes the topology changes dynamically. As routing of data in such dynamic topology is an important issue in mobile ad hoc network, so the selection of suitable routing protocol is necessary which enables to route data between mobile nodes efficiently by using less bandwidth of the network. Each routing protocol has its own architecture and working. Routing protocols behave differently under different environments. Thus, it is necessary to analyze the behavior of different routing protocols under different environments. Many studies have been done on the performance evaluation of routing protocols of MANET, but most of these studies are based on IPv4. On the other hand, IPv6 gains popularity because it has some additional features over IPv4 as it supports multicasting, multi-homing, efficient routing. IPv6 is more secure as compared to IPv4 and has large address space to support. On account of these features of IPv6, many organizations are moving to use IPv6, and therefore, it is worthwhile to evaluate the performance of routing protocols under IPv6 environment. In this paper we evaluate the performance of two ad hoc routing protocols OLSR and AODV under IPv6 environment on the basis of end-to-end delay, throughput, and network load. The objective of this research is to investigate how these routing protocols behave under IPv6 environment and identify which routing protocol performs better. OPNET Modeler 14.5 is used as simulation tool. On the basis of simulations we conclude that OLSR performs well which proves that it is suitable for efficient routing.

Comparative Analysis of OLSR and AODV under IPv6 Environment