Analysis of IPv4/IPv6 Transition Mechanisms

OData support
Supervisor:
Dr. Huszák Árpád
Department of Networked Systems and Services

A few decades ago, when the IPv4 protocol was designed, nobody thought that the 32-bit address space will be ever exhausted. At least it was not expect that this will happen so quickly. Because of rapidly developed and spreading electronic innovations (laptops, smartphones, tablets, etc) the number of Internet users is growing exponentially. Next to exhaustion of the allocable IPv4 addresses several other problems also occurred e.g. increased routing tables, header complexity, security, etc.

For this reason a new IP protocol (IPv6) was developed. The IPv6 protocol is using 128 bit addresses, so the available address space was greatly increased, while the simplification of the IPv6 header made the routers more effective. The new protocol became safer due to IP-level authentication and encryption.

The transition to IPv6 is a complex process. It will not happen in one moment, because a well-functioning system should be replaced with a new one. The two protocols will work temporarily in parallel, therefore different methods are needed to help the transition. Each of these mechanisms has advantages and disadvantages.

In my thesis I introduce the public and free possibilities of IPv4-IPv6 transition methods. I study these techniques in a real test network and examine how the IPv4 users can change to IPv6 most effectively. I work out measurements for the transition techniques and analyze the obtained results. At the end of my thesis I summarize the results and my experiences.

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