Thank you very much to all of you for your input !
I see port in few of your feedback.
I was not clear enough, let me rephrase:
is it possible to give a subnet to a node, not based on the port of the switch/router but based on the node ?
meaning that the switch/router need to recognize the node ( MAC or login? ) and then will give him access to A or B
Thanks.
it works back, it's just super slow.....