As the public IPv4 address space has already been depleted, the full deployment of IPv6 became indispensable, especially for service providers, as it offers a sufficient address pool. However, the ongoing IPv6 transition seems to be a lengthy task because of the numerous challenges it faces. Therefore, it is expected that IPv4 and IPv6 will coexist for a long time. Consequently, many transition technologies have been developed for this purpose. Several research papers have conducted performance analysis for a number of these transition technologies and even compared them based on some measuring metrics like RTT, throughput, jitter, packet loss, and so on. This paper reviews the results of these papers, discusses their findings, and gives some guidelines fora feasible benchmarking methodology.

Mobile Ad hoc Networks (MANETs) are self-configuring autonomous networks consisting of a set of mobile nodes connected by wireless links. The lack of fixed infrastructure and centralized administration makes it necessary for nodes to cooperate with each other to communicate. However, some nodes may choose to stop forwarding packets intended for others to conserve power, bandwidth, and computational resources. These selfish nodes can have a detrimental impact on the performance of the entire network due to packet loss, denial of service, a decrease in network throughput, and network partitioning. The legacy Ad hoc On-demand Distance Vector (AODV) routing protocol suffers from the inability to mitigate this selfish behavior. In this paper, a new variant of AODV called Reputation-Aware AODV (RAAODV) is proposed and evaluated. RAAODV monitors neighboring nodes, manages reputations, and reacts against detected selfish behavior. Experiments show that RAAODV improves network performance by 54% above legacy AODV when as many as 50% of nodes behave selfishly all the time.

Several IPv6 transition technologies have been designed and developed over the past few years to accelerate the full adoption of the IPv6 address pool. To make things more organized, the Benchmarking Working Group of IETF has standardized a comprehensive benchmarking methodology for these technologies in its RFC 8219. The Mapping of Address and Port using Translation (MAP-T) is one of the most important transition technologies that belong to the double translation category in RFC 8219. This paper aims at presenting our progress towards implementing the world’s first RFC 8219 compliant Tester for the MAP-T devices, more specifically, the MAP-T Customer Edge (CE) and the MAP-T Border Relay (BR). As part of the work of this paper, we presented a typical design for the Tester, followed by a discussion about the operational requirements, the scope of measurements, and some design considerations. Then, we installed a testbed for one of the MAP-T implementations, called Jool, and showed the results of the testbed. And finally, we ended up with a brief description of the MAP-T test program and its configuration parameters in case of testing the BR device.

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