(Such schools are located in a relatively large network of schools, and users have more than 400 information points. The large-scale campus network network system is divided into core layer, aggregation layer and access layer in design; it can be basically divided into campus network core, teaching subnet, office subnet, dormitory area subnet and so on in terms of function. The layered idea makes the network have a structured design, and modular analysis is performed for each layer, which is very helpful for unified management and maintenance of the network. At present, layered design has become a trend. This section first analyzes the three levels, and then briefly introduces the functional subnets of the campus.)
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