IPV6 's future development in China cannot be too optimistic

"Let every grain of sand on earth have an IP address" became IPV6 's most familiar advertising language. IPV6 has long been unable to be called a "new technology", which was born in the middle of the 90, when the Internet Engineering Task Force set the standard to replace the IPV4 standard that had been established in 20. With the development of the Internet in the process of the emergence of other technical concepts, IPV6 encountered controversy can be said to be the least, people have already formed a consensus, that is IPV6 eventually replace IPv4 is the general trend.

In 2005, a variety of seminars on IPV6 were held, and IPv6 flourished as the spring of 2005. All this is due to China's years of technology and the accumulation of the market results. Some people call 2004 China's IPV6 commercial year. In the government, operators, equipment manufacturers and other multi-party promotion, a number of IPV6 experimental network has begun to take shape, and the completion of equipment interoperability and a variety of application testing, for the next generation of internet construction in China laid a foundation for the overall launch.

Current status of TP address resources in China

Arguably, China's IP address is now scarce, "when 26 Chinese share an IP address, the average American has 6 IP addresses, which is China's predicament in the IPv4 era." "The Global Telecommunication Union Telecommunication Standardization Bureau Director Houlin is not alarmist. According to statistics, China at the end of 2004, Internet users reached 9000 million, but China has a IPv4 address of less than 50 million, accounting for IPV4 all the address of more than 1%. What kind of situation is it? According to statistics, a Massachusetts Polytechnic University in the United States can have as many IP addresses as China.

Facing the lack of IP address, ITV6 development is inevitable. China is now lagging behind in its ITV6. "IP address always pursues first come first, IPV6 address distribution principle also unavoidably." Houlin said, "Those in Europe and America who are ahead of the technological power are aware of this and are already embarking on the address." "China's application for IPV6 address accounted for 1.7% of the distribution, about 1/9 of Japan, the United States 1/8, South Korea's 1/3, accounting for the 16th place in the global rankings, or even less than the number of Taiwan region in China."

Why are there so few applicants for IPv6 in our country? According to Li Xiangjian analysis of China Internet Network Information Center, one is not clear about the relevant regulations of Asia-Pacific Internet Information Center. Second, the address application process is more complicated. In addition, the standard of the IPV6 agreement is not uniform, enterprises have to take into account and increase the burden.

At present, all countries in the world for IPV6 address resources are used "preemption", in the end IPv6 can bring us what benefits? We analyze the advantages of IPV6.

Advantages of IPV6

The Prophet said that IPv4 only connect computers with computers, and IPV6 connect people together, and let us completely out of it. IPV6 addresses not only address space issues, but also a high degree of flexibility, better security and mobility, improved quality of service (QoS) and more efficient IP address management, with significant commercial and even military value and potential.

Expanded the address space. With a 128-bit address length, an IP address can be provided almost without restriction, ensuring the possibility of end-to-end connectivity.

Improve the overall throughput of the network. Since IPV6 packets can be far more than 64K bytes, applications can use the maximum Transmission Unit (MTU) to obtain faster, more reliable data transfer, while the design of improved routing structure, the use of a simplified header fixed-length structure and a more reasonable segmentation method, so that routers faster packet processing speed, Improve the forwarding efficiency, so as to improve the overall throughput of the network.

The quality of service has been greatly improved. The business level and flow tag in the header can achieve priority control and QoS security through router configuration, which greatly improves the service quality of IPV6.

Security has a better guarantee. The use of IPSec can provide an effective end-to-end security guarantee for upper layer protocols and applications, and improve security at the router level. Microsoft's IPV6 security has only been moderately improved. First of all, if someone wants to invade your network need to scan IPV6 address space, and IPV6 address space than Ipv4 significantly much larger, so that slows down the hacker's action. But you can't rely solely on this to solve security problems.

Supports Plug and Play and mobility. When the device is connected to the network, it can automatically obtain the IP address and the necessary parameters by automatic configuration, realize Plug and Play, simplify the network management, and easily support the mobile node. IPv6 not only borrows a lot of concepts and terminology from IPV4, it also defines the new features required for many mobile IPv6.

Better implementation of multicast capabilities. The 2-range 2 and 2 flags 2 are added to the IPV6 multicast function, which limits the routing range and can differentiate between permanent and temporary addresses, and is more conducive to multicast functionality.