Thanks Sajal for your reply. If I was trying to connect to the physical network directly that would be how I would do it (it's actually how we have done it on the production side of things... well without vCloud Director, but the concept still applies).
I'm trying to provide a level of isolation so there can be more than one instance of that configuration running at once. I also would like to have connectivity between the two VLANS (it's not shown on the diagram but there is a domain controller on the VLAN-A which needs to be accessed by machines on both VLANs).
Have you ever done something like that?
(thanks again)
--
Jean-Marc