Sometimes people want to have one LAN port of GL-router change into the Guest LAN, then they can provide their guests a LAN connection without using the main LAN.
Our models GL-AX1800, GL-AXT1800, and GL-A1300 can provide one of the LAN ports to become a Guest LAN.
First, login your router and go to Luci. Then click the Network tab Interface and you will see the Guest
Click Edit and then you can see the manual inside. Change the Device from unspecified to eth2
Then go back to Interface and click LAN.
Change the Device from br-lan to eth1.
Finally, you can go back to the router web admin panel and turn on the guest wifi. You will have one LAN port changed to Guest LAN now.