Using the SNMP to automatically establish the association between upper and lower Switch connections, identify device IP physical locations, automatically generate network topology maps, and provide historical records of MAC/IP/Switch/Port/VLAN ID. It supports Switch for most brands on the market and can obtain information on multiple platforms such as Windows/Linux/macOS/Android/iOS. Assist management personnel in inventory and asset statistics to establish a single port multi MAC list or set MAC/Port binding. If any private device event occurs, the system will automatically alarm and prompt for correction to ensure the security of the intranet and the normal operation of the network.