New development of IPV6 technology

Brief introduction

The development of IPV6 technology has shifted from theoretical research to network practice, and how to use the characteristics of IPV6 to meet the needs of the future network development has become a topic of more concern to people.

The IPV4 agreement is currently a widely deployed Internet protocol. However, with the development of the Internet, after more than 20 years of practice and test, the protocol has gradually exposed the congenitally deficient design and many limitations, become the application of IP technology and future development constraints. IPV6, as the foundation of the next Generation network, is widely recognized for its distinctive technical advantages, which creates opportunities for business development. How to use the characteristics of IPV6 to meet the needs of the future network development has become a subject of greater concern.

1. Deployment of IPV6

Since the establishment of the 1992 standard, IPV6 's standard system has been basically perfected, which has promoted the IPV6 from the laboratory to the actual network. The research on IPV6 has shifted from the theoretical aspect to the exploration of IPV6 application, which has further promoted the development of IPV6 technology.

Transition strategy of 1.1 IPv4 to IPv6

IPv6 compared to IPv4 is a great progress, but also a great change, from the IPV4 network gradually to IPV6 network, to completely replace the IPV4 network process, the network of equipment nodes how to achieve upgrades or replacement, network services How to achieve migration, transition strategy is critical. In "How do I deploy IPV6?" On the issue, through the recent years of network deployment practice, people at least in the following areas have reached a consensus:

1. Protecting User Investment

The main devices currently on the network include: Backbone routers, converged routers, access routers, a variety of gateway devices, Ethernet switches and network terminals, they are distributed in different levels of the network, replacement equipment, should be based on the specific circumstances of the network to consider the appropriate transition strategy, to avoid the existing user or network has a big impact, Only good protection of existing investment in the network technology and the corresponding program can be a good practical.

2. Pay attention to the development of network application

The application of the existing IPV4 network has already supported a large number of users, the introduction of IPV6 technology in the network can not affect the existing business. At the same time, the business of IPV6 network is related to the sustainable development of IPV6, on the one hand, it is necessary to make a smooth transition of existing business application on IPV4 system, on the other hand, to develop new application, especially "Killer application".

3. Properly resolve the problem of Ipv6/ipv4 coexistence

IPV4 System has established a huge user and network group, in the long run, IPV4 and IPV6 technology in the network will coexist. The future IP network will be the integrated network of IPV4 network and IPV6 network. Therefore, the need for network equipment to IPV6 transition technology has a good ability to support.

4. Network equipment is independent

In the process of evolution to the IPV6, the network from the core to access all levels of equipment may be involved, so the network can be selected between the various parts of the available networking technology, can not restrict the other network parts of the selection of technology and equipment updates. From the equipment level requirements from high-end to low-end support IPv6 respectively.

How to deploy 1.2 IPv6 network

IPV6 deployment is basically from the construction of IPV6 backbone, the use of equipment for the IPV6 backbone routers. For example, the domestic Cngi model network for IPV6 Construction is composed of several backbone networks through the interconnection center of China, including: CERNET2 by Cernet Network Center, as well as the network center of China Telecom, Chinese mobile, China Unicom, Netcom and Chinese Academy of Sciences, China Railcom has built the core backbone network of the next Generation Internet demonstration network respectively. Cernet Network Center is located in Tsinghua University, China Netcom and the Chinese Academy of Sciences Network Center is located in the CAS Computer Network Information Centre.