Ruijie failed to connect to the Internet? You don't seem to understand. The question is whether Ruijie management has provided you with exemption from certification. If authentication-free is set, the main line enters the WAN port, and static TCP/IP protocol connection is set, the computer connected to the LAN port can automatically obtain IP. If it is a non-certified user, the main line enters the LAN port, and the computer is connected to the LAN port. Wireless devices and wired computers must set their own TCP/IP protocols. Remember: wired devices can't log in after the unlimited devices log in, because there are two identical IPS on the network segment.