[c-nsp] Cheapest Cisco desktop switch that supports Q-in-Q/802.1Q VLAN encapsulation/double-tagged VLANs/Stacked VLANs

[Frank Bulk]

What is the cheapest Cisco desktop switch that supports Q-in-Q?  Is it the
ME-3400G-2CS-A?  We prefer the "encapsulation dot1q x second-dot1q y"
approach.

And why does one page on Cisco's site say: 
Q. What is 802.1Q Tunneling? Is it an IEEE standard?
A. With 802.1Q Tunneling, a service provider's switch can tag on a second
802.1Q tag on top of the customer's 802.1Q tag. This feature is sometimes
referred to as "Q-in-Q." The Cisco implementation is proprietary and does
not interoperate with other implementations. There is currently no effort to
make this into a standard.

Frank