I have a TP-Link Archer C7 v5 with OpenWrt 21.02.1 on it that I set up as a wireless repeater using WDS as explained in the user guide here: https://openwrt.org/docs/guide-user/network/wifi/atheroswds
My main router is an IQRouter v3 (it came pre-installed with OpenWrt).
I would like to change this setup so that the TP-Link is connected to the network via an Ethernet wire but still act as a wireless repeater. My goal is that the TP-Link should serve as only a connection point for wireless connections and should transparently let the IQRouter handle everything after that. I am wanting to make the TP-Link wired to the network mainly because the way our building is, there is no good place to put the TP-Link as a purely wireless bridge and still provide a good signal as well. I figure that if I can connect the TP-Link to the network via Ethernet, then the wireless signal from there will be stronger.
I had been given the suggestion on the unofficial Discord of bridging a physical port with the existing wireless bridge, turning off the client WiFi and then plugging into the wired port. What I don't know how to do is the first part of that, the bridging of a physical port with the existing wireless bridge.
When I go into LuCI on the TP-Link, the LAN interface is set to the br-lan bridge device, and the icons within the parentheses are of eth0.1 (saying Software LAN on it) and 4 radio icons for wlan0, wlan0-1, wlan1, and wlan1-1 (which I assume are the Master and Client connections currently in place). I tried to go to Devices and add a new Bridge Device, but I only see
Ethernet Switch: "eth0",
Switch VLAN: "eth0.1" and
Switch VLAN: "eth0.2" (wan, wan6) there and I do not know what to select or if I'm doing something wrong. I know that eth0.2 is the wrong choice, at least.
Any help is appreciated. I've been told this should be super simple but I am missing the knowledge on how to do the physical port bridging necessary to change this setup.