i've bought a used TP-LINK Archer C5 V1.2
Upgrade to OpenWRT with latest version of LEDE went fine, all options are working.
The router should be used as an access point on 2nd floor connected via LAN cable to my router in basement.
For this i wanted to have the device configured without DHCP, the router below is already one and should deliver the IP-Adresses.
So i changed the setting of the interfaces, but now the configuration page is not accessible any longer.
Once it's connected to the LAN cable via WAN interface, i do not have internet access.
After plugging the cable from the below router to LAN1, i have full internet access via LAN and both WLAN interfaces (2.4G, 5G), but the TP-LINK is still inaccessible.
The device seem to be working in general, but i cannot access the interface. Tried it via Telnet/SSH, no success.
Even going to failsafe brings the device to the mode where i can ping 192.168.1.1 (after manually set my computer to the required network setting)
But Telnet is not working, it always say "Connection refused".
Both (Ping and not working Telnet) are independent from the WAN/LAN switch i am using.
As the device is new, i'm looking for a different option to run a factory reset. The normal procedure provided by TP-LINK does not work any longer (i assume because no TP-LINK firmware is installed any longer).
Any highligting ideas to this issue are much appreciated.
EDIT: I've tried running an Nmap on the IP-Adress of the router.
Result: All 100 scanned ports on 192.168.2.xxx are closed (that's the IP of the router getting from the other one).
But it's still pingable.
EDIT2: I have connected a NAS device to one of the LAN ports. Also not reachable. It only works if i switch the connector from WAN to any available LAN port.
So the result is that is's working like a simple switch (including WLAN) but it's not configurable any more.