In the traditional three-tier network, the characteristics of complex network configuration and horizontal network data exchange reduce the network transmission performance. Based on the topology platform of the current network, the switching units in the existing network layer are to be configured with stack and cluster; multiple physical devices are to be integrated into a data exchange module logically using virtualization technology; and the network logical topology is to be configured into two-layer architectural model. The design improves the data transfer efficiency, avoids network loops, enhances the security of data transmission, and also simplifies the network configuration.