Put Hub 3.0 in modem mode on 192.168.0.1. Turn it off. You MUST TURN IT OFF NOW.

TP Link Archer VR2800 192.168.1.1 > "Operation mode" > "Wireless router mode" (was "DSL Modem/Router mode" by default).

Custom configs we had, not sure if mandatory:
* Dynamic DHPC mode
* Unicast DHCP

Wait for TP link to fully reboot.

Connect port 4 of tp link (marked WAN/LAn) to port 1 of VM Hub (unmarked, but it is magic, has to be port 1).

Finally, AFTER everything else is setup, turn on the Hub and wait for a few minutes. It ONY WORKS if you turn it on after everything is setup.

Outcome:
* hub light turns purple: https://www.reddit.com/r/VirginMedia/comments/c703t6/purple_light_on_the_box/
* Archer WAN light turns on white. Not red. Red means error
* you have Wifi. Notably, the 5G Wifi is way way faster and reaches the WAN limit of 256 Mbps.
* Ethernet does not work anymore on either Hub nor Archer, Wifi only. But it doesn't matter because the 5G Wifi already reaches the speed limit.

Bibliography:
* https://community.virginmedia.com/t5/Forum-Archive/Connecting-Tp-link-archer-vr2800-to-Hub-3/td-p/4765927 This was The thread, the only one that clearly explained the fundamental importance of turn on off ordering by "jbrennand".
* https://community.tp-link.com/en/home/forum/topic/269540
* https://community.tp-link.com/en/home/forum/topic/170344
* https://community.virginmedia.com/t5/Gaming-Support/Connecting-Archer-VR2800-to-Hub-4/td-p/5246513


Tp link archer vr2800 router virgin media hub 3 0 wifi setup

ID: tp-link-archer-vr2800-router-virgin-media-hub-3-0-wifi-setup