[c-nsp] QinQ layer 3 port channel

[Wes Smith]

Hi
I have two sites connected by l2 vlan trunk. 
On the A end, the A-client switch has multiple gig ports connecting to the "A" core/pe. 

On the B end, the "B-client" switch  connects by a single 10g to the "B" core. 

All equipment is Cisco 6800 or 6509 sup720/Sup2t. 

The question is how to handle the multiple gig ports at the A-end. 

Preferably, I want a simple single layer 3 connection using some sort of ether-channel between the A client and A-core and connect to the single 10g at the B end. 

Instead of using independent l3 links for each of the A end gigE. 

A-client-L3Etherchannel --Acore--qinq--Bcore -- 10g-- BClient.  

Is this doable ?

I know how to make multiple svi connections over this path. 
It's the lag config at the A end that is stumping me.