I need to replace a ring of ancient Foundry switches in a MAN.  I'm looking at the MS450-12's, but the current Foundry MAN is co-owned by several agencies.  I need the ability to do QinQ tagging so each agency can carry their (overlapping) VLAN sets.  I don't yet have any of the MS450's, and I can't find anything relating to this in any of my current networks configurations or manuals.  Is this feature present or planned to be added? ... View more