Thanks Mahomed for your reply, however my situation is different from yours i think, i have 8 physical nics where 2 are access ports (no vlan's) and are in vswitch1, 2 nic's are in vswitch2 with multiple VLAN's, 4 are in vswitch3 with multiple VLAN's, the VLAN's i have defined as virtual bridges (which they in fact are), now it's common sense that a virtual machine's nic (virtual port) gets connected to a virtual bridge, so multiple virtual ports should be able to connect to a virtual bridge, where a virtual bridge should be connected to multiple physical nic's. The current implementation seems to not be able to address this, it would be nice if ports get an extra attribute like broadcast-domain where one to many, many to many and many to one relations are possible. Maybe made possible by adding this attribute to port-compatibility, where you can assign for the specific port-compat entry wether it's one on one, one to many, many to one or many to many, however this is a major change i think in the port assignment code... I think i could implement this but i simply do not have the time for doing this so hopefully a developer steps up to implement it.