The AX1800 uses (Virtual Local Area Network). When you leave "Allow guests to access my local network" unchecked, the router creates a hard barrier. Guests can see the internet and the router’s gateway IP (for login), but they cannot see your PC on 192.168.31.101 or your printer on 192.168.31.105 .
The Xiaomi Mi Router AX1800 (often sold as the AX1800 or the "Global Version" of the Xiaomi router) is a powerful Wi-Fi 6 machine. However, creating a guest network on it isn't as straightforward as on a Netgear or Asus router—especially if you are using the Mi Wi-Fi app or the web interface. create guest network on xiaomi mi router ax1800 work
Test your new guest network. Connect a friend’s phone to the guest SSID and ask them to try pinging your main computer’s IP address. If the ping fails, congratulations—you have successfully created a working guest network on your Xiaomi Mi Router AX1800. Have a unique issue not covered here? Check the Community Firmware threads on the official Xiaomi Mi Router forum, or perform a factory reset (hold the reset button for 10 seconds) and repeat the steps from scratch. The AX1800 uses (Virtual Local Area Network)