i have a modem router zte zxhn h108n v 2.5 and a adsl2 connection
i recently flashed openwrt 19.07.6 on my tp link archer c20 v5
so i set my modem/router in bridge mode and when i tried to configure pppoe wan connection via openwrt it says connection attempt failed
im really new to openwrt and it is really confusing for me as a first time user
Provided that your configuration on OpenWrt is correct, that means user/pass and VLAN, have you tried to run the pppoe from another system, like Windows, to verify that it's not an issue on the modem bridge mode?
Alright, now connect OpenWrt wan port to the same port you used with the Windows on the modem.
Then change the wan network protocol from dhcp client to pppoe, add the user/pass, and save.
If it still is not working, post the following:
Please run the following commands (copy-paste the whole block) and paste the output here, using the "Preformatted text </> " button:
Remember to redact passwords, MAC addresses and any public IP addresses you may have