The Research Of Jining Netcom IPv6 Protocol Transition

The Internet has developed very quickly from 70's,now its size is large. The key reason of the success of the Internet is the protocol running on it—TCP/IP. It is the robustness of TCP/IP that leads to the 20 years high speed development of the Internet.IP is the corepart of TCP/IP,it provide the common connection of the network. The design of IP is reasonable and it make IP the foundation of the success of the Internet.With the development of the Internet,the weakneses of IP become obvious. The most fatal one is the lack of address space. There is not enough addresses to asign. IP is now the bottleneck of the developmentof the Internet.For this reason, IETF made up the Ipng working group to find the next generation of IP In 1994,Ipng working group recommended the official IP and named it IPv6. As IPv6 has been proposed,the problem is the transition from IPv4 to IPv6.This thesis is composed of three parts. In the first part,the writer discussed the history Of TCP/IP and explain the main character of TCP/IP.In the second part,the writer discuss the weakness of IPv4 and how the IPv6 make up These weakness.In the third part,the writer discuss the transition mechanism from IPv4 and IPv6.There are two usual transition mechanism,the writer tested them and found their weakness.So,the writer proposed his own transition mechanism. It is tested that the new mechanism is practical for the transition from IPv4 to IPv6 in the Ji Ning CNC network.