An innovative Ipv4-ipv6 transition way for Internet service provider

摘要

As IPv4 addresses are being exhausted, more and more ISPs have to migrate to IPv6. As there are so many servers in ISP's IDC, how to transit these servers from IPv4 to IPv6 smoothly is a big problem. An innovative IPv4/IPv6 transition mechanism, called IVI, is being used to help ISP's deal with such a problem. The IVI is a prefix-specific and stateless address mapping mechanism for "an IPv6 network to the IPv4 Internet" and vice versa. Subsets of the ISP's IPv4 addresses are embedded in the ISP's IPv6 addresses and the servers using these IPv6 addresses can therefore communicate with the global IPv6 Internet directly and can communicate with the global IPv4 Internet via stateless translators. In order to clients from both IPv4 and IPv6 can access these IPv6 servers, name resolves should also be made on type A and type AAAA records in DNS. This paper depicts the fundamentals of IVI and the best deployment for ISP servers. Against to other transition mechanisms, it is proved that IVI is an easy and idea way for ISP IDC migrates to the Next Generation Internet based on IPv6.