I know it's offtopic from the original question, but I share my solution because maybe someone else has the same trouble. SOLVED (I think) Using an Omada switch such the Omada SG2005P-PD is easier...

The cam still receives the IP from the management (no VLAN), like VLAN are assigned before check DHCP assignments. Thanks, I will try with WireShark.

@d0ugmac1 Thank you, but nothing happens moving the dumb switch and rebooting the Omada Switch

Dear all, I'm here again. I have a problem, with this switch the IP e VLAN doesn't work anymore. I set the Omada switch port to All profile, one of the client, tiè AP, has to be to the main, the...

Thank you! I've just bought 2 of them, next weekend I will try. Thank you!

Thanks. The power consumption should be ok (less than 5W the EAP225, less than 6W the cam with IR led on, so including the switch itself it will be under 15W without any doubts). Thanks for the link...