Hi Partha,
thanks for you quick response.
I have validated and it seems that I have the same configuration, but it is still not working. However I have one additional element in my scenario: a EX4550 acting as P that connects both PE, (you EX3300 and your QFX5100).
In my case, this EX4550 only has two Aggregated ethernet configured as family ethernet port mode trunk. So, if you see my configuration, this EX4550x1 is getting the S-vlan from one AE and passing it to another AE that is connected to the QFX.
So i have this: CE --> PE --->P ---> PE ---> CE
Do I need to set anything special on the P Switch in order to see the mac-address on the QFX (PE). Per my revision, it seems that the P is passing the frames as standard dot1q frames and not as QinQ frames.
Thanks
Ezequiel