PRTG, the full name Paessler Router Traffic Grapher, is a powerful software that can obtain traffic information and generate graphical reports through the SNMP protocol on devices such as routers. It can generate graphical network traffic reports for various devices within the enterprise's internal network, including servers, routers, switches, employee computers, etc., and can also statistically and plot these reports to help our network administrators find problems with the enterprise network and analyze the direction of network upgrades.