I have repalced my TPG-supplied Archer vr1600v router with another router (Archer AC4000), which is now directly connected to my NBN modem. I now wish to use the vr1600v attched to a poweline extender to exend my network to parts of my house not reachable by the AC4000, however when I connect the vr1600 I cannot get internet access through it (ie the "Internet" LED does not light up).
If you wish to use one of the VR1600 as an extender the setting should be like this.
Under 'Advanced' Tab > 'Network' > Internet Connection Type: 'Dynamic' > VLAN ID Unchecked.
Once you set this you can simply connect it to the LAN ports of your main modem/router.
See photo below:
Let me know should you require further assistance.