The network system of elementary and middle schools is also a basic construction of the school. She creates a good environment for improving the teaching level and scientific research level of the school, and provides a good application, development and research platform for the construction of key projects. It is a new century. An important project. Especially in the teaching level, it will break through the rigid mode of traditional teaching methods. You can adopt a newer and more open and active education method through the facilities of the network system, and form an interactive teaching between students and teachers through the network multimedia system. mode. It is a perfect and supplementary to the traditional teaching methods. It has the advantage of being more vivid and direct to be accepted by students in the spread of science, technology, new technologies and new ideas. At the level of scientific research, the new campus network system will bring schools the most direct and concise window to communicate with the world through the Internet. Teachers and employees can directly exchange information and share data with teachers and students of other colleges and universities on the network. Within the school, academic discussions and exchanges can be conducted in a good network system environment, scientific research methods will be more flexible, and the overall level will be further promoted.
For the construction of such a large engineering project, the network platform is the foundation and key of all systems. Taking into account the needs of users, network technology and design principles, in the design of network solutions for primary and secondary schools, we have focused on the following issues.
1. Application changes
The traditional application structure is being replaced by the CLIENT / SERVER architecture. More and more customers are in contact with the central server through the network. The rise of the Internet / Intranet structure has caused the traditional 80/20 principle to reverse, and a lot of traffic has surged. To the backbone of the network, the requirements for the backbone are further increased.
2. The demand for multimedia
With the emergence of new technologies and lower hardware costs, the transmission of video, audio and other multimedia information on the network is becoming a user's demand. In the primary and secondary school / vocational school network system, from the perspective of multimedia teaching, this demand It seems more important. This requires us to fully consider the requirements of multimedia information transmission in network design.
3. Reliability and security
The primary and secondary school / vocational school network is a unified communication platform for various applications. The average trouble-free time and recovery time must be kept within a tolerable license. Under this premise, the backbone equipment should have a certain degree of redundancy, this redundancy is not only at the device level, but also should consider the fault tolerance of the physical line, data link layer, network layer and application layer.
For elementary and junior high school / vocational school networks, security issues not only come from external networks, but the main threat comes from internal networks. Many of them come from network address theft and cyber attacks adopted by students out of curiosity or other psychology. This is undoubtedly a network system A hidden danger. How to effectively design a security program is a very important issue.
4. Application of virtual network technology
Due to the administrative settings of primary and secondary schools / vocational schools, centralized wiring of buildings, and some applications and security considerations, the division of virtual networks is necessary. In addition, users need more than simple divisions, but more Effectively, easily and dynamically modify and configure them.
5. Network management
The school network system will be distributed in every building of the school and every corner of the floor in the building. The workload of daily network maintenance and operation has greatly increased. The network system needs a reliable, convenient and powerful network management system to fully and effectively manage and Use network resources.
The above mentioned some factors that should be considered in the network design of primary and secondary schools / vocational schools, which are in line with our design principles. In the design of primary and secondary school / vocational school network system solutions, we must insist on starting from the actual needs of the school and using advanced network technology to build a network system that is truly suitable for users.
Ruijie Networks Primary and Secondary School Network System Solution
Due to the wide coverage of primary and secondary schools, a fixed model cannot be defined in the design of network system solutions. We give a typical configuration plan according to the size of the specific school.
As a campus network, it refers to all buildings connected to the network in the school. For some areas that are not convenient for comprehensive wiring, the Ruijie wireless network solution has a transmission rate of 108M, which is undoubtedly a perfection and supplement to the campus network system.
The network system is an important tool for multimedia teaching while automating the school office system. Therefore, in the configuration of specific programs, while grasping the overall structure of the network, we must also have a specific special configuration program for the multimedia classroom network system.
While realizing the intranet function of the campus network, we also need to consider the problem of the Internet access of the campus network. In this way, from a security perspective, a firewall system must be configured for the entire network to ensure the security of the network. It should be true that the school ’s Web homepage can be easily publicly accessed, browsed, emailed, and other legal communication with the Internet is guaranteed, and malicious attacks from the outside world will be rejected, or some illegal sites will be filtered.
In addition, in order to support teachers to dial-up to access the campus network at home for remote office work, we also need to consider the access problem of remote users.
Based on the nature and scale of specific primary and secondary schools / vocational schools, we divide the schools into the following and give corresponding practical solutions:
Small and medium campus network solutions:
For small campus networks, we can further refine the specific requirements. If the relative traffic of the entire network is relatively large and the schools with concentrated information points, our backbone uses Gigabit Ethernet technology. For schools with relatively small information flow and scattered information points, we use fast Ethernet connection.
Backbone Fast Ethernet
Ruijie Networks ---- Topology diagram of small and medium campus network solution for general education:
Program features:
1. Extremely high network management function
This solution adopts Ruijie enhanced network management switch, which can be conveniently and effectively managed to each final port through multiple network management methods.
2. High scale expansion capability
Through the fully modular design of the central switch RG-S6506, the stacking of STAR-S3550 switches and STAR-S21 series of access layer switches can be aggregated to easily and effectively expand the number of ports and the scale of the network.
3. High user access control function
The RG-S6506, STAR-S3550, and STAR-S21 series switches used in this solution have good control and filtering functions for the MAC addresses in the data packets. You can set static MAC address locks, dynamic MAC address locks, and MAC address filtering And other functions to achieve effective control of access users.
4. High-performance multimedia and video-on-demand effects
In this solution, the RG-S6506, STAR-S3550, and STAR-S21 series switches all support the multicast protocol IGMP, which fully guarantees the high-performance multimedia and video-on-demand effects in the entire network, laying the foundation for future VOD video-on-demand.
5. High data security and broadcast storm suppression capability
In this solution, RG-S6506, STAR-S3550, and STAR-S21 series switches all support Port Vlan and 802.1Q Tag Vlan. Vlan can be divided to ensure the security of data in the network and effectively suppress broadcast storms.
6. High bandwidth and redundancy performance
In this solution, the RG-S6506, STAR-S3550, and STAR-S21 series switches all support the standard L2 Trunk technology. You can choose to bind multiple ports to achieve higher network bandwidth while providing good redundancy.
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