(With the rapid development of computer technology and communication technology. Digital campus, office automation, network teaching, campus card, security monitoring, public broadcasting and other information systems have been widely used in campuses. Therefore, the scheme for campus network is also getting higher and higher. Whether it is the traditional wiring method or the open new wiring method. All of them have played the development mode of the network to varying degrees, representing the direction of the future development of the campus network. .)