Monday, September 27, 2010

Find driving force behind IPv6

Editor's Note: In the course of further development of IPv6, the lack of impetus from the application of IPv6 will likely be a major obstacle to business - this is the recently held "2006 Global IPv6 Summit" to deliver us the most important information.

April 13, the annual global IPv6 event - the "2006 Global IPv6 Summit" in Beijing International Convention Centre. It was at this same location, the same event is already the fifth held. IPv6 Summit, and compared to previous years, this year's meeting site a lot of lonely, but experts and vendors still has had some exciting news: the domestic IPv6 network infrastructure of getting better, narrow the gap between domestic and foreign firms are the gap between manufacturers. More importantly, IPv6 will begin commercial service in 2008, attempts to provide a full range of services to the Beijing Olympics.

Has been the development of our country are based on the Government to promote IPv6-based. For example, the "Eleventh Five-Year Plan proposal" highlighted, to "strengthen the broadband communications network, Internet, digital television and next-generation information infrastructure"; National Development and Reform Commission also issued in 2003, "China Next Generation Internet Project ", which CNGI project. From the government to support and promote the development of IPv6 tremendous momentum.

However, with IPv6 network construction and application development to start, followed by some of the problems began: in the already completed and under construction IPv6 network, the application is still the main contents of the original IPv4; many users and operators investment in the IPv6 network is not out of business and applications. Originally, the business and application development should be the fundamental driving force for IPv6, but the current situation not the case. Some experts believe that with further development of IPv6, this lack of impetus from the application of IPv6 will likely be a major obstacle to business.

Getting better

IPv6 in addition to the IP address once and for all solve the shortage, but also considered bad IPv4 address various other issues, such as end to end IP connectivity, quality of service (QoS), mobility and so on. Based on strong technological advantages, IPv6 will become the mainstream of the field of data communication trends, and become the core technology of next generation network. At the summit, the Chinese project, said Wu Hequan clear: "development of the Internet has come to a crossroads, need a new starting point." In his view, the Internet is the new starting point for IPv6.

Back in 1998, China on the establishment of the first IPv6 trial network CERNET-IPv6. After that, IPv6 development concern, but the development of Debu bland. However, there are some new progress in the recent bear CNGI project six units, in addition to slightly lag China Netcom, China Telecom, China Unicom, China Mobile, China Railcom and Education Network CERNET2 other five have completed the equipment bidding. Which, CERNET2 is has completed the transformation of five key nodes, and smooth the overall translation of business.

All along, our cutting-edge technology on the Internet for research and development are mostly borne by the education industry, in the IPv6 research and development, the education sector also plays a very important role. According to the network director of the Center of Tsinghua University, CERNET Expert Committee Wu Jianping, director introduced, CERNET2's goal is to seize the opportunities the Internet replacement for the current Internet, the main technical issues of international cooperation in the design and construction of new generation Internet architecture.

The layout of the entire CNGI core objective is to connect 20 major cities located in the core nodes. In these 20 cities, 25 central universities to become a major node, high-speed connection of more than 100 research universities and qualified research institutions and R & D center, the minimum required bandwidth is 1G, and achieve the other core backbone network High-speed Internet. It also bears in North America, Europe, Asia-Pacific international next-generation high-speed Internet connectivity tasks.

CNGI project in assuming 6 units, the education network CERNET2 most significant achievements. According to reports, in March 2004, connecting Beijing, Shanghai and Guangzhou CERNET2 advancing slowly; in December 2004, connecting 20 cities in the CNGI-CERNET2 trunk advancing slowly, the network made a large-scale use of pure IPv6 routers present has been successfully running for over a year; the next step, CERNET2 plan the next generation of Internet technology for large-scale testing and application demonstration.

Wu Jianping, said: "China's CNGI backbone has been formed and the European Union, the United States about the size of the three major networks, the next generation of Internet research, network infrastructure, we have been going more toward the front of."

Mature domestic equipment

I remember a few years ago the global IPv6 Summit, the exhibition hall, almost all foreign manufacturers of display, there is no domestic manufacturers of the figure. However, in this conference, you can find Digital China, Huawei Technologies, CEC, good telecommunications and other domestic companies Snapshots show. After several years of development, domestic manufacturers and foreign manufacturers have narrowed the field in the IPv6 range.

As the starting point for the same R & D, coupled with technological homogeneity constraints, the field in the IPv6 routing, the overall performance of domestic and foreign manufacturers of equipment, not much difference. According to Wu Jianping introduction, completed five units of CNGI project tender, domestic equipment has become the biggest winner, with an average account for more than 80% share. This is known as the domestic equipment industry field in the IPv6 breakthrough achieved in one of the largest.

"As the number of foreign equipment vendors in the IPv4 and accumulated a considerable number of products and the advantages of technology, so IPv6 has not been able to become the focus of their development. While the domestic equipment manufacturers have an urgent need to seize this opportunity to catch up with IPv6 foreign companies, therefore, whether R & D or marketing strategies are extraordinarily positive. "Digital China Networks Limited Deputy General Manager and CTO, said the DPRK sunny. It is for this reason, Digital China IPv6 network in the field to speed up the pace, its self-developed DCRS-7600 Series IPv6 Gigabit Routing Switch product is a one-time through the "IPv6 Ready Phase-2" test. The Digital Network to help build the IPv6 Hainan Normal University, the summit also unveiled the campus network, and has attracted the concern of many participants.

IPv6 also some other areas of domestic manufacturers has made good results, although domestic manufacturers began research and development time IPv6 equipment later, but developing rapidly. According to reports, now the mainstream equipment manufacturers have been achieved in the core hardware support for IPv6, the forwarding of data has been relatively better. There are several models in RTNet laboratory model tests have reached the Ministry of Information Industry of the network license standards.

Currently, Juniper, Hitachi, Cisco and other companies have a full range of products to support the IPv6. In the domestic manufacturers, in addition to Digital China network, ZTE routers, switches, products also passed the IPv6 Forum IPv6_Ready test, and passed the China Telecom, China Mobile, China Netcom, China Unicom's IPv6 core network test equipment in interoperability testing. Huawei is also in the core routers and edge routers to provide full hardware support for IPv6.

However, while the functions of IPv6 equipment, better performance, but the stability of the equipment needs to be improved. IPv6 router device performance from the current point of view, its routing table capacity, hardware, wire-speed forwarding capability and strong, but these devices in the implementation of access control lists or unicast Reverse Path Forwarding strategies have an impact on the performance, extend the first performance poor stability of the equipment needs to be improved. In addition, the market switches with IPv6 functionality of three products less and IPv6 broadband access server, not much room for choice.

It is said that China-made equipment in the CNGI project bidding to become the biggest winner, not because of its leading edge technology, but for the policy of protection. Of course, affect the layout of future development of the Internet, CNGI tender protection of domestic equipment is understandable. But for domestic equipment makers, will undoubtedly further enhance the technological strength is the key.

Lack of killer applications

During this summit, Hainan Normal University, IPv6 IPv6 network construction as a typical case of high-profile appearance. The school through the construction of IPv6/IPv4 dual protocol network, to achieve large-scale IPv6 network, and the successful completion of large-scale migration of IPv4 to IPv6. However, this meeting shows most of the other cases also have stayed at the experimental stage.

Although this year has been to Hainan Normal University dormitory, library network access to the IPv6 network which, on the opening of a IPv6 network services to students, but most of the application and the application of the original IPv4 networks are not much different. IPv6 view of the whole building, such as VPN, home users online game, VOD, multicast, that require a large number of terminal equipment and address of the application and not universal, it also led to the needs of users of IPv6 is not so urgent. Wu Jianping appears in the current lack of innovative applications based on IPv6, IPv6 is impeding the development of one of the factors.

IGRS Information Technology Engineering Center, president of Sun Yuning, said: "In the next generation Internet development in China should be by the application to integrate, to bring the next generation of Internet application development." Vice president of China Telecom Beijing Research Hui-Ling Zhao, feels that the IPv6 development in technology, the barriers have been less obvious, its future development or market Xuqiu mainly face of the driving problems, it also requires a large number of innovative applications.

Currently, there are in the demonstration system and test the system in a very large number of IPv6 applications, has basically covered the range of people can imagine. Only in the home broadband demonstration network, there is a lot of applications: home appliances and terminals connected through a variety of networking technologies, through the living room media center experience of IPTV services, through the living room media center remote video phone, portable media center through the WLAN, USB, etc. from the PC to download content and play, home equipment, intelligent control. Moreover, the scientists also describe for us the broad prospects for the next generation Internet: support large-scale scientific computing, to support large-scale video conferencing, remote instrument control, real distance education.

"CNGI large-scale construction has started, but still no substantive commercial business, we hope that IPv6 can be driven CNGI application development." One expert as saying. Indeed, with the full roll out CNGI, IPv6 finally have our own place, and as a major hardware network routers have been able to achieve the hardware support for IPv6, the next step CNGI focus will be how to achieve and commercialization integration.

But good news is that, at the summit can be seen, the industry has begun to put more attention to IPv6 applications, covering the wireless devices, mobile multimedia terminals, monitors, home gateways and other fields. In the conference hall, there are also companies to bring video system based on IPv6. In addition, there is news that the application of standards for CNGI work is in progress. The above is undoubtedly conducive to promoting IPv6 commercial application.

Security issues still to be resolved
The summit demonstrated the many domestic manufacturers of equipment to support IPv6 and application.

In Wu Jianping view, only to replace IPv4 IPv6, only the problem of scalability issues, and security, many problems in real time now, and not well resolved. Wu Quan He also highlighted that, IPv6 encountered in improving the existing Internet security, scalability, quality assurance issues have some effect, but simply address the structural change can bring improvement is limited. "IPv6 Internet can fundamentally solve some of the existing fundamental issues. From this sense, IPv6 does not mean the next generation Internet."

Which, IPv6's security problems have raised concerns at the summit. IPv6 issue safety overseas experts warned that the next generation Internet architecture (IPv6), the hackers, viruses and other security issues will continue to plague the industry, even more serious.

Juniper Networks, Senior Network Architect Jeff Doyle said at the summit said that in IPv6, the security problem certainly exists, hackers, viruses and other problems will also exist, and there is no essential difference between the current Internet. "Some applications will be more attacks, such as the banking system will be more attacks for profit, this phenomenon may be very serious. In IPv6, the large number of P2P applications appear, it would increase attacks against the . "

Security experts believe, IPv6 is still unknown weaknesses. Foundstone Professional Services Security Advisor Cory Benninger previously said: "We believe in the IPv4 to IPv6 transition, the tunneling protocol may be vulnerable to attacks of weakness, and immaturity of IPv6 platform is the greatest weakness." For example, Cisco IOS IPv6 denial of service, Linux Kernel IPv6 Denial of Service, Windows operating system can easily become a target for IPv6 networks.

On the other hand, the transition from IPv4 to IPv6 implies the need to re-write software programs and install new hardware device, which also makes security issues become more apparent. Some experts said: "related to the safe operation of IPv6 network protocol conversion gateway and firewall products low, performance is also poor."

At present, no IPv6, security incidents do not know how to assess the safety topic IPv6 organization, but that does not mean that the future of the Internet more secure. Appear in the experts, IPv6 also provides more security for the user the opportunity, and along with the development of IPv6, there will be more security mechanisms to prevent this from happening. In addition, some equipment manufacturers have stepped up security in IPv6 input, such as Digital China network security by developing SAOP linkage agreement, with the agreement to ensure the controllability of the entire network, credible, evidence.

Judging from all the above, China's IPv6 building although getting better, but the whole industry is still in its infancy, Huan need government departments, research and development institutions, network operators, equipment manufacturers and service provider's full participation.

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