If I got your question right, you need an EVC framework in order to to this. 
This option however is valid on certain platforms only (Cisco 7600 with ES 
cards, ME3400, ME3600, 3800 and others). 

Here is how it works:

http://www.kis.fri.uniza.sk/~palo/Rozne/cisco-expo-2009/Presentation%20-%20DAY2/a3ethernetvirtuacircuit.pdf

In my opinion there is no other way to do this in old-fashioned configuration 
model. 

HTH,
Dani
On Jun 1, 2012, at 9:41 PM, Ian Couch wrote:

> Does anyone know of a way to do this without using 2 switches?  I've used
> selective q-in-q to apply an outer 802.1Q tag to a given C-VID, as well as
> a number of other options on a selective q-in-q port, but can't seem to
> handle untagged packets the way I want to do it, i.e. applying an inner and
> outer tag to the packet.  Using the native vlan doesn't work, or at least I
> haven't managed to get it working that way.
> 
> Thank you,
> 
> -- 
> 
> *Ian Couch* | Network Engineering IP Specialist
> 
> *Tbaytel *| 871 Tungsten St. | Thunder Bay, Ontario | P7B 6H2
> 
> Tel. (807) 625-2018 | Cell. (807) 624-6355 | Fax. (807) 623-2237
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