I’m trying to replace a Vodafone Power Hub WiFi 6 with a TP-Link ER605 v2 managed by an OC200 controller.

Service details:

* Vodafone Full Fibre 910
* Openreach FTTP
* Openreach ONT
* ER605 v2
* OC200 controller (v6.0.0.36)

The Vodafone router connects immediately when plugged into the ONT.

On the ER605 I have configured:

* WAN1
* PPPoE
* Vodafone username and password
* MTU 1492
* MAC cloned from the Vodafone router WAN MAC

After speaking with Vodafone support, they confirmed:

* The PPPoE username and password are correct.
* I should configure VLAN 911 on the third-party router.

Symptoms:

* WAN link is stable at 1000 Mbps full duplex.
* Initially I was getting repeated PPPoE PADI timeouts.
* After one ONT power cycle I briefly got “authentication failed (wrong username/password)” which suggested the PPPoE server was responding.
* Subsequent attempts returned to PADI timeouts.
* No IP address, gateway or DNS is assigned on WAN1.

I’ve tried:

* Rebooting the ONT
* Leaving the ONT powered off for 10+ minutes
* Re-entering credentials
* MAC cloning the Vodafone router

Questions:

1. Has anyone successfully connected an ER605 v2 directly to Vodafone Full Fibre 910 on Openreach?
2. Is VLAN 911 definitely required on Vodafone Openreach FTTP?
3. Are there any ER605-specific PPPoE settings I should be using?
4. Has anyone seen the combination of occasional authentication failures mixed with mostly PADI timeouts?

My screenshot above (if I've managed to

uload it) (username identifier and end of MAC obscured.).  Any screenshots of a working ER605 Vodafone FTTP WAN configuration would be greatly appreciated.