Chengdu Education Information Network is positioned as a pillar network of Chengdu education: it not only considers the international development trend, closely follows the process of world informatization, but also combines Chengdu Education's current situation and development plan to build Chengdu Education Information Network. The network uses advanced Internet technology on the basis of making full use of existing China Telecom broadband communication network resources, and vigorously develops online information source construction, strengthens user management and security management, and makes it into office management, education, teaching, and Provide a variety of business functions including broadband multimedia teaching, safe and controllable education network.
According to the Chengdu Education Information Network Master Plan, strive to build and improve the education information metropolitan area network covering the entire Chengdu by 2004. At the same time, follow the principles of overall planning and distributed implementation.
In 2003, a comprehensive education information management system platform integrating office management, education, teaching basic information management, data statistics, and collection will be gradually built and completed in the three-tier structure of the city center, district and county sub-centers, and schools, so that the school— The district, county, and city education bureaus have implemented electronic office and management of basic school information collection, statistics, and management. At the same time open e-government and e-mail system.
The district / county education network is a subnet of the Chengdu Education Metropolitan Area Network. The district / county education subnet uses district / county data sub-centers as hubs to connect schools and educational institutions in the region to realize the management of education informatization in the region. The district / county data sub-center is an indispensable and important part to realize the three-level architecture of the education metropolitan area network. It is also the network management center, organization management center, and content service provision center in the education metropolitan area subnet. In terms of, the sub-center is also the hub of communication with the city's data center, and is also responsible for the online publishing, publicity, management, data collection, and statistics of schools in the region.
Network solution
Educational information network topology:
The selection of network equipment in the data center is very critical. It is necessary to consider whether it can meet the current needs and expand in a certain period of time in the future. The central switch should select a Gigabit Layer 3 routing switch with strong network management capabilities. In addition, the central switch should also have Certain bandwidth allocation and management, QOS capabilities, NAT functions and other network layer 4 capabilities.
Based on the above considerations, the Chengdu city, city and county project has done a lot of research in the selection of equipment, and has conducted a serious cost-effective comparison of domestic and foreign mainstream network equipment. Finally, it chose to use the Digital China Network to construct Chengdu city, city, and county education data Sub-center construction project.
The data center mainly uses China Digital DCRS-7504 switch as the core backbone switch. This switch has 128Gbps switching capacity, 48Mpps wire-speed full-layer packet forwarding rate. DCRS-7504's Gigabit module has 8 ports each, and the engine also has 2, 4, and 8 Gigabit interfaces, which lays the foundation for flexible configuration of users and achieves the purpose of protecting investment.
In network management, we use linkmanager network management software of the Chinese interface of Digital China, which is more intuitive and convenient.
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