Dude, Did yu try reversing this process? I had almost the same issue with my Toto Link & ZTE ONT. They suggested to switch on the TOTOLINK WiFi router 1st & once it’s ready, then I switch on the ZTE ONT. It works perfectly. Jus give a try if not.Did anyone find a solution for this? Airtel gave me the same Nokia G-140W-C router and it doesn't work with bridging.
Here's what I tried-
1. Put all LAN ports to Bridge mode on Nokia router
2. Connect LAN1 port of Nokia to WAN port of router (Asus RT-AC68U) and configured PPoE (with VLAN set to 100 priority 0)
3. When the Nokia boots up, its LAN1 and my router's WAN LEDs blink. At this point my router starts attempting PPoE connection
4. Once the Fiber LED (its called GPON on Nokia) goes green, the LAN1 (and my router's WAN LEDs) STOP blinking.
5. At this point, all LAN ports on the Nokia go dead, nothing happens at all.
Even I got to Airtel networking support in the area, they've emailed their "backend team" for help with the bridging.
I convinced them to give my old Alcatel modem back, but for some reason thats not working as well [I've reset it but I can't access its admin page ]