AIPv4/IPv6 Transition

摘要

The new Internet Protocol (IPv6) has been developed to replace the current Internet Protocol (IPv4) and the transition from IPv4 to IPv6 is a necessary process in the realization of global Internet. The development of IPv6 technology and continuous increases in application, but this process will take long time so a transition methods will be needed. There are many IPv4/IPv6 transition methods already exist today, some of them applied in practice, the others still as proposed solutions. Tunneling and encapsulation methods are the most techniques that used until now, but all encapsulation mechanisms suffer from the increasing of the overhead traffic network as a result for either encapsulating IPv4 packet in the IPv6 packet or encapsulating IPv6 packet in the IPv4 packet. In this paper we proposed a system that make incompatible nodes; the first based IP4 the other based IPv6, communicate together without increasing packets size, this system is called Bi-Directional Transition System (BDTS). This system depends on understanding of the two environment of transmission , that is , received the source packet then converting the information header to be adaptable to the destination end. Our system has been implemented then we made a test by simulation tool called VMware ,during this simulation our system was studied in one scenario and the results shown that BDTS make two incomputable protocol hosts communicate together.