The Outer.1Q tag represents customer VLAN ID and inner.1Q tag represents Provider VLAN (PVLAN )

A.
The Outer.1Q tag represents customer VLAN ID and inner.1Q tag represents Provider VLAN (PVLAN )

B.
It is an effective way to achieve VLAN transparency between Provider and enterprise customer by tunneling one ser of VLAN tags inside a second VLAN tag

C.
The Outer.1Q tag represents Service VLAN (PVLAN) and inner.1Q tag represents customer VLAN

D.
QinQ is a way to hide native VLAN which can conflict with Provider native VLAN