The construction of campus network is the key to the implementation of modern educational technology. Macro-planning should be carried out and its development and application should be paid attention to.

Paper Keywords: modern educational technology; Network construction

Our college network was established at the end of 1999 and has developed for five years. The investment has accumulated from the initial 365,438+million to the present 10 million. At the initial stage of construction, ATM protocol was used to build backbone network, IOM/IOOM adaptive Ethernet protocol was used for desktop, and CISCOCatalyst5509 was used. As the core switch, CISCOCatalyst2924 is the edge switch, and CISCOPIX-520 sets a barrier for the campus network exit.

Later, ATM protocol withdrew from LAN, dry Ethernet protocol became the mainstream, and devices supporting ATM protocol could not be purchased. The direction of campus network construction has been changed to Gigabit Ethernet, and the dry Ethernet service board WS-X54 10 on C 1SCOCatalyst5509 has been continuously purchased, so that the main switch has the ability of dry Ethernet access, and the units with fewer nodes use wireless access, and the campus network exit has also been upgraded to 65438+.

Compared with the topology diagram above, it is not difficult to see that the network of the college has been developed and the access mode has been expanded. What aspects should be concerned about in the construction of campus network? In my opinion, to ensure the success of campus network construction, we should do the following work well:

First of all. Macro-planning and optimization structure of network construction

The capital investment in the construction of campus network is very large. The campuses of comprehensive universities are widely distributed (many campuses) and far away. Therefore, the scale and structure of campus networks vary widely, but unified planning is absolutely indispensable regardless of size.

In the initial equipment selection, our hospital considered that there would be more video courses in medical education, and the network performance could not be reduced under the condition of concurrent video streams. ATM protocol is superior to dry Gigabit Ethernet protocol in this respect, so CISCOCatalyst5509 switch supporting ATM protocol is selected as the core switch. From the perspective of network structure, due to the relatively concentrated campus of our school, physical convergence layer devices can be replaced by mature VLAN technology, and their functions can be completed by high-performance three-layer switches, so the network structure is clearer.

Due to the rapid development of computer technology and network technology, if there is no unified planning, the built systems will be incompatible with each other or waste the initial investment. If the school foundation is poor and the level of network application is low, even if the network is built, there may be bad situations. Therefore, paying attention to planning and optimizing the network structure is the top priority of campus network construction.

Secondly. Continuity and Manageability of Network Construction

In the process of network construction, we should grasp the development direction of technology, consider the overall development trend of the school, and build with foresight, especially consider the expansion and upgrading of the network. Starting from the actual needs of the college, don't sacrifice performance, which will get short-term application. In the long run, it is only a stumbling block to limit the development of the network. The equipment selection should ensure that the network requirements can be met within at least 5 years, and it can be successfully upgraded to subsequent products. The construction of the network can't be done overnight. You can build it if you have the ability. Don't spread the stall too big, and your performance will not go up. That kind of building is a waste. A good network environment has healthy development and vigorous vitality.

The core switches in our college support dry Gigabit service boards, which can also provide dry Gigabit Ethernet access for the network when dry Gigabit Ethernet becomes the mainstream, thus prolonging the service life of the core switches, saving the cost of purchasing core equipment again for the college and retaining the backbone of ATM protocol as teaching service.

After the completion of the network, the flexibility of network management directly affects the stable operation of the network and the efficiency of network utilization. One can manage the network based on graphical interface, super terminal and other ways, provide multi-level and efficient implementation scenarios, ensure network security, and achieve twice the result with half the effort. This is very important for network managers.

Finally. Pay attention to the network application after the network is completed.

The ultimate goal of campus network construction is to make it serve teaching, scientific research and management. If there is no certain network application, then even the best network is just a shelf, just like running a carriage in expressway, which is a serious waste of resources.

In order to play its role, the campus network must establish an application management system suitable for each school. The construction of campus network is all around the application system, which is a comprehensive system serving teaching, scientific research, school management and other links, not just an online browsing system and information playing system. At present, the mature campus network integration system mainly focuses on the following aspects: assisting teachers in teaching and improving teaching methods; Provide network services to facilitate teaching and scientific research for teachers and students; Improve office conditions and work efficiency: open the external window and establish the image of the school. The author thinks that the school should combine the actual situation of the school and the current situation of the development of educational information technology, which can be applied in the following aspects.

1. Providing Internet proxy services for faculty and staff:

2. Use the registered domain name information to establish the school's internet website, publish the school's teaching, scientific research and management information, and provide external information services; Manage and standardize the school's official e-mail system and official Internet access;

3. Establish campus management information system for computer-aided management and office automation;

4. Establish a card management system for school staff and students.

The above is my little experience accumulated in network management for several years. I hope I can provide some help to my colleagues who have just started network construction, and I hope everyone can sum up more experience in their work and accelerate the success of China's modern teaching model!

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