I am using GL-AX1800 on the latest v4.2.1r4. I have plugged-in the USB adapter, it could be recognized, and used as WAN. I am trying to configure the router running in access point mode, while using the USB adapter as LAN port. Groupping usb0 into br-lan like this: [Screenshot from 2023-06-12 1…

What is the settings of the WAN interface?

I have factory-reset the router. After initialization, I have clicked “use WAN port as LAN”. Nothing more is modified. And then I have done the groupping of USB0 mentioned in the previos post. Thanks.

USB0 was in the WAN zone. So can you check the WAN interface configuration in luci?

I have connected LAN on GL-AX1800 to PC, and USB-LAN on GL-AX1800 to router with WAN. Enabled network from USB: [Screenshot from 2023-06-12 21-16-21] The interface having USB0 should be TETHERING. [Screenshot from 2023-06-12 21-15-53]

Removing all other ETH, just having USB0 in BR-LAN, it can get IP from DHCP from another router: [Screenshot from 2023-06-12 22-00-04] However, devices connecting to WIFI from GL-AX1800 cannot obtain any IP address, hence failing to connect to WIFI.

By the way, I have found 2.4Ghz WIFI is not connectable when USB adapter is connected. I have tried reset the router and played around with WIFI settings. Simply unplugging the USB adapter 2.4Ghz WIFI works again. Strange.

[image] y2kbug: Simply unplugging the USB adapter 2.4Ghz WIFI works again. USB 3.0 can create interference on 2.4 GHz according to this whitepaper . .

Oh yes, I have heard of this before. Totally forgot. Actually what I am trying to do is, using the USB as 2.5gbps ethernet adapter. Maybe I should wait GL publishing a new model…

You should remove usb0 from tethering in order to let it work as LAN. tethering interface is part of wan. [image]

I did removed THTHERING, and grouped USB0 into BR-LAN. Anyway the USB adapter interferes 2.4Ghz WIFI so it is meaningless to fix the setup. I have bought another GL-MT3000 (CN version). May I know the difference between the CN version and the international version? Thanks.

How to configure a USB ethernet adapter as LAN?

Router

groentjuh June 14, 2023, 7:12am 12