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ing with timesensitive, shared, interactive and many of the characteristics of the individual, so it has a traditional teaching model of unmatched advantages. It created a new teaching model, breaking the traditional teaching model at the time and space limitations, the use of advanced teaching methods and teaching methods, greatly improve the teaching efficiency and teaching effectiveness, teaching and learning activities to enable a new level. Do a good job in the design of the campus network, are among the schools, both internal and external munication between the key and convenient.21st century the size of the campus network and application level are reflected in schools and science teaching and learning environment an important ponent of the force, so we should make use of existing campus conditions, design a secure, unified campus network.Large Campus Network DesignBusinesses operating large campus networks are increasingly looking for infrastructure upgrades to:(1) Handle high bandwidth applications such as voice, video, and IP multicast Improve backbone capacity for shared Ethernet or FDDI campus backbones (2) Support applications based on Novell IPX, DECNET, AppleTalk, and SNA (3) Offer high availability, performance, amp。 manageability for your pany39。s intranet Use Layer 2, Layer 3, or ATM backbone solutions to expand your large campus network. In typical designs, the buildings or different parts of the campus connect together across a high performance, switched backbone. Network redundancy and hi