Hi @Shivoopsy . TPG needs PPPoE, your username and password. If you are not on FTTP, it needs VLAN ID=2 (vlan tagging). DHCP and DNS addresses are sent to the router from TPG when it connects.
This note from Whirlpool: (FTTB, FTTN, FTTC, HFC all use VLAN ID)
To most providers the 4353 can be used for NBN FttC such as Superloop, Aussie BB, Optus etc. but not those who require both WAN = PPPoE AND VLAN ID Tagging ( for the TPG Group it is a value of 2 ) which the 4353 cannot ( it can't do VLAN ID Tagging ).
If this is the case, there is a new BYO router plan (data only, no phone) which doesn't use VLAN ID.