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Mobile Networks in IPV6

Abstract : This research study, Mobile Networks in IPv6, was conducted at the United States Naval Academy (USNA) with the end goal of testing the capabilities of IPv6 in low bandwidth networks. Specifically, this study focused on the effects of using IPv6 on networks whose speeds are comparable to 56K Dial Up access, ISDN, and various other low bandwidth wireless networks. This research also ventured into the world of Voice over IP (VoIP) and analysis of the network traffic that it creates, but unfortunately time and complexity did not enable the study to start. While the Office of Management and Budget (OMB) directed the Department of Defense (DoD) to complete the transition to IPv6 by 2008 (Domagalski 2007), there is still a great deal of testing to be accomplished before that goal is met. While most shore based DoD sites have excellent high bandwidth connections, there are still quite a number of units which do not have that luxury. The units in question, deployed ships, Marine ground units, and various others in a war zone, rely on low speed, high latency satellite or wireless connections to maintain connectivity to their commanders. The first segment of this research project aimed to examine the feasibility of sending large amounts of data from high to small bandwidth networks. A significant portion of this project aimed to correlate MTU settings and transmission speeds. A hypothesis to be tested aimed to see if increasing or decreasing the MTU size would affect those speeds, but enough data was collected which showed that changing the MTU size only affected error rates, not transmission speeds. Tests were conducted to determine how line conditions would affect the way IPv6 would be transmitted across networks of varying bandwidth but extensive tests were unable to be conducted since legacy hardware was not able to be acquired. To help mitigate the hardware gap, a three-pronged approach of theory, simulation, and experiment setup was used to validate results.