7210 SAS devices configured in access-uplink operating mode support QinQ spokes or dot1q spokes, which allows them to connect to upstream PE nodes which provides IP/MPLS transport.
VPLS is provided over QinQ/Dot1q spokes by:
connecting bridging-capable 7210 SAS devices
replicating unknown and broadcast traffic in a service domain
enabling MAC learning over QinQ/Dot1q spokes and access ports (see VPLS MAC learning and packet forwarding)
using a separate FIB per VPLS service