Vlans can either be isolated or not. Its just an IP set. So even a static set that is not part of the router or managed switch is a Vlan . Normally you would want all VLANS to be managed by a switch or router otherwise, they are not managed. On the NVR, the Cam inputs are the managed switch inputs that is connected to an ehternet port that is seperate device from the Lan Port. The NVR can accept cameras from either network (Lan or managed cam switch)