Internet Protocol Version 6 (IPv6)

2777 Words11 Pages
Internet Protocol version 6 (IPv6) is the next protocol version that it is used for communications on Internet. The Internet based on IPv4 protocol has made countless success in the past 20 years. Yet it has some limitations that were not estimated when it was first created, the IPv4 protocol cannot content the requirements of the Internet expanding. It is reported that all unallocated addresses for IPv4 will be used up within 5 to 6 years. IPv6 protocol suite was presented in IETF (Internet Engineer Task Force) on 1994. This suite is using 128-bit address instead of 32-bit IPv4 address. The United States, Europe, and East Asia were the first to recognize the significance of IPv6 and plan to deploy it. Transition to IPv6 has been documented as the most promising direction, because Ipv6 overcomes many of IPv4 limitations, and it is the only viable long-term replacement for IPv4. The migration to IPv6 has started already, but it is still in its early stages. The current IPv4-based Internet is so large and so complex that the migration from IPv4 to IPv6 is not as easy as the transition from NCP network to TCP/IP in 1983. One of the most important concepts that should be deliberately weighed is, How to protect the investment that already exists and reduce the negative influence on users and ISPs during the transition process. Certainly, the research on IPv6 transition is of vital importance for the success of IPv6 protocol and the future of the Internet. As many international
Open Document