To support multi-tenancy, vCloud Director integrates with NSX Manager to manage the creation of isolated Layer 2 networks. All networks created from vCloud Director are backed by vSphere port groups. Access between cloud networks is governed by the NSX Edge virtual routers.

vCloud Director does not support universal NSX objects. However, port groups belonging to a universal logical switch can be used as backing for multiple external networks.

vCloud Director generates unique VM MAC addresses based on its installation ID (1-63) with the following scheme: 00:50:56:ID:xx:xx.