@David-TP thanks for the welcome and help. According to Optus they use IPoE. I don't see this an an option during the set process anywhere. I've never had to worry about PPPoE username and password...

Hello, I can't seem to get my AX5400 deco mesh modem router to connect to Optus NBN during initial setup of the Deco. The Optus unit has been working fine. It's FTTP and I've confirmed the service is...