Layer 2 circuit on aggregate interfaces

You can configure a Layer 2 circuit on aggregate interfaces. You can apply input and output VLAN tags for pop, swap, and push label operations on the VLAN-CCC interface. VLAN tags are applied when traffic is sent to and from the Layer 2 circuit interface. These operations are performed only on the outer TAG. The pop VLAN tag removes the VLAN tag from the top of the VLAN tag stack. The push VLAN tag adds a new outer VLAN tag, and the swap VLAN tag replaces the existing outer VLAN tag with the new VLAN tag. This feature provides interoperability between Layer 2 services with a distinct VLAN at the local or remote end, or for instances where the Layer 2 service comes with a certain VLAN, but the remote peer has a different VLAN or no VLAN.