The campus network construction of Heilongjiang University of Science and Technology is part of the construction of campus network informationization in Heilongjiang Province. Heilongjiang University of Science and Technology is a whole change from Heilongjiang Jixi Mining Institute. In order to respond to the country's requirements for education informatization and at the same time improve the school's informatization sharing level, Heilongjiang Institute of Science and Technology proposes to build a campus network in an all-round way.
Through direct contact with users, after many times of communication. The requirements of Heilongjiang Institute of Science and Technology are as follows:
1. Realize the sharing of information resources and hardware and software resources, and provide rich network information services to promote the informatization of teaching and management departments;
2. Realize paperless office in all departments of the school;
3. Meet the multimedia classrooms and other related multimedia applications on campus;
4. Realize the connection with INTERNET and education information network;
5. Practical, economical, high-speed, safe and scalable
Overall design
Combined with the specific needs of the campus network construction of Heilongjiang Institute of Science and Technology, we designed and used Shenzhou Digital DCRS-6512 three-layer switch in the network center of Heilongjiang University of Science and Technology, equipped with 2 ports of three precursor copper cable modules and 8 ports of 10 / 100base TX one.
The DCRS-6512 chassis itself comes with 1 management module, 2 fans and 1 power supply. DCRS-6512 has 12 I / O switching slots, 2 management slots, and can provide up to 24 Gigabit ports, 96 100M ports, and 96 VDSL ports. Can fully meet the school's future teaching and research needs. Meet the needs of non-blocking switching in the campus network.
On each floor switchboard, China Digital Stackable Switchboard DCS-3628S is used, and 4 switches are placed on each floor as a stacking combination, which is connected to the central switchboard via Gigabit copper cables. Start the RIPV2 routing protocol at the central router to achieve dynamic routing. A total of 20 DCS-3628S are used in Heilongjiang Institute of Science and Technology.
In the campus network construction of Heilongjiang University of Science and Technology, the network design from the network management switch to the desktop can ensure the reliable management of the students' use of the network.
Through the management of LinkManagerTM network management software, unified monitoring and management of the operation of the entire campus network.
Design Principles
High bandwidth, high performance
Through communication with relevant personnel of Heilongjiang University of Science and Technology, we learned that in order to meet the communication capabilities of the campus network, we should be able to greatly improve the network interconnection bandwidth, routing switch backplane switching capabilities and routing switch switching performance, from the edge to the core Network equipment at all levels of the switch eliminates network bottlenecks in an all-round way, avoids congestion as much as possible, significantly improves response time, and should also provide a guarantee mechanism for service quality.
QoS guarantee based on application layer
The IP network of Heilongjiang Institute of Science and Technology is responsible for all types of communication in the network. At present, the data applications in the network are mainly concentrated in the management of campus teaching and scientific research, and the daily teaching applications of students. In the design of the campus network, the implementation of QoS function can ensure the network's special requirements for service quality.
Application-oriented bandwidth management can achieve cost-effective Internet communication, by assigning high priority and QoS to bandwidth-sensitive applications, such as video applications, to ensure that critical applications can obtain the required bandwidth and resources.
High reliability and high stability
On the basis of considering the existing network, the topological structure of the entire service network network structure adopts a stable and reliable structural form as much as possible to ensure the high reliability of the entire network. Network equipment and the entire network system must have high reliability features. The main network equipment must have a hot-swap function, which can repair faults under power without affecting the overall work of the network system, and support carrier-class network equipment reliability.
Advanced
It must reach the current international advanced level in technology. To adopt the most advanced network technology to adapt to the transmission of large amounts of data and multimedia information, not only to meet the current business needs, but also to fully consider the future development, to ensure that the network is not behind 5-7 years after its completion. Systems and products that meet international standards should be selected to ensure that the system has a longer vitality and expansion capabilities to meet future system upgrade requirements.
At this point, as a well-known manufacturer in the domestic network industry, Digital China has developed core layer switches that meet the needs of metropolitan area networks and large data centers, which can fully guarantee that the completed business network can meet the Changning District in a considerable period of time. Various applications and the demand for bandwidth brought by the explosion of information.
Easy to manage and maintain
The entire business network must have good manageability, and the network management system should have functions such as monitoring, fault diagnosis, fault isolation, and filtering settings to facilitate system management and maintenance. At the same time, products with high integration, modularity, and universality should be selected as much as possible to facilitate management and maintenance.
In this regard, the Digital China R & D Center has developed the LinkManagerTM network management system. It is a set of highly integrated, fully functional, practical, and easy-to-use network management software based on the Windows NT platform. It is based on the actual needs of Chinese users, and it follows the five major functional domains (performance management, configuration management, fault management, billing management, and security management) of the ISO network management model. Intellectual property network management system software.
LinkManagerTM has a "vertical + horizontal" management feature that not only targets designated devices but also supports general-purpose network devices. In other words, it can provide complete device management and function management for SNMP-enabled network devices launched by Digital China Network Co., Ltd., and can also support any other general-purpose SNM well.
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