(The campus network design plan is a case that explains and explains in detail from the demand to the design design. The content is as follows: 1. Overview of the CHINANET network 2. 2. The campus networking plan 22.1. The overall design of the network structure 22.1.1 Construction background 22.1.2 Construction principles 22.1 .4 Network structure design 32.2 Network equipment 52.2.1 Equipment selection principle 52.3 IP address design and routing strategy 52.3.1 IP address allocation 52.4 Network security 52.4.1 WAN security strategy 62.5 Network advancement and scalability 62.5.1 Advancement 62.5 .2 Scalability 72.6 Building wiring system 72.6.1 Cables (lines) 73.6.2 Indoor wiring system 72.7 Project investment estimation 82.8 Some suggestions for future network usage 8)