Building VPN Campus network to realize resource sharing

The current network construction has been developed from the original regional network to cross-regional, trans-city wide area Connection, and the security requirements of the network and the increasing carrying business, with the original means of networking many problems difficult to solve.

Because of the inherent advantages of MPLS VPN technology, the special network has solved the problems that bother users and integrators.

The following is the use of China Netcom's MPLS VPN implementation of several cases, we have a better understanding of MPLS VPN solutions.

Beijing United University is a municipal university in Peking, she is a small camp as the school's administrative and teaching center, under the jurisdiction of the business school, Arts and Sciences College, Chemical College, Special Education College and other 13 branch schools. Or far or near to the city and suburbs of Beijing, there is a Langfang branch. There are more than 30,000 students in the school, most of them are students in Beijing. The number of students in Beijing Union University is more in Beijing, and the campus decentralization is the biggest feature of the General Assembly.

In such a decentralized school situation, how to form a holistic teaching system? The School Committee of Beijing General Assembly has been thinking and demonstrating the feasibility of the implementation of the program.

1998, the Beijing General Assembly carried out a campus network of the first phase of construction, the 5 decentralized schools to use ISDN and DDN line with the Cernet connection, the basic realization of the school interval Information interchange, at that time the interconnect bandwidth is 64K and 128K. But most campuses do not have campus local network, and some schools are just teachers ' office networks.

Spread the trouble of running a school

Although this network played a large role, but with the development of campus information, many problems are revealed.

At that time the network coverage is too small, because the teaching independence of each campus, can not form a whole network of interconnected teaching.

　　

Logical topology diagram of Campus network of General Assembly


Because of the design of the export too small, so that the speed of access is too slow, especially access to the Internet, the waiting time is too long.

The information construction of school does not have the basic condition of starting, and the resources can't be shared well.

Such a narrowband network can not transmit voice and video at high speed, and security is not guaranteed, so that the online application business can not be carried out.

Select Mpls VPN

In order to solve these problems, through a variety of comparisons and analysis, the General Assembly finally confirmed the cooperation with China Netcom, the construction of MPLS VPN private network. From Beijing United University and China Netcom to Beijing United University of the optical fiber interconnection of the construction of an overall solution (total Solution), and assume the General Assembly campus Network Phase II project of the overall construction, the school has invested 13 million yuan, by the overall planning of Netcom, the overall construction, China Netcom is responsible for the VPN network construction, network system integration and application system integration of Beijing United University.

"Because MPLS VPN is a more advanced technology, we have done a careful and detailed comparison with other technologies before adopting this technology," said Zhanglian, director of the Joint Information Network Center at Beijing Union University. "We have considered the bandwidth of renting radio and television or telecommunications, but the network we are going to build is not just a visit to the Internet, More importantly, the overall information construction of the school should be built on the Internet. The school's office, finance, teaching must rely on and rely on this network, this is a whole online union university. In addition, MPLS VPN technology is the best one in terms of security confidentiality. And the cost of using this technology is much more economical than that of the optical fiber. ”

Construction of Campus Network

Beijing General Assembly Campus Network to take the "overall planning, step-by-step construction" of the planning policy.

The entire campus network includes 1 centers, 8 campuses, known as the "one main eight auxiliary" institutions. The link resources used in the interconnection between colleges and universities are China Netcom's metropolitan area Network fiber link, using the MPLS VPN service provided by Netcom. Each campus through the 10M link to the China Network Tongcheng Area Network, the school center connects to the Netcom metropolitan area network through the 100M link, with the help of the double loop structure and MPLS/VPN technology of the metropolitan Area Network, which makes the campus network of Beijing Union University form a network topology on the logical topology, which is different from the common star-type topological structure. So to some extent, the campus network of Beijing Union University is a metropolitan area network.