The following table lists the service and SAP encapsulation information for Ethernet ports.
| Port type | Encapsulation |
|---|---|
Ethernet |
null |
Ethernet |
Dot1q |
Ethernet |
QinQ |
When a VPLS service with default QinQ SAPs on the ring ports is used for transit traffic in a ring deployment, users can use either G.8032 or M-VPLS with xSTP for ring protection. When using G.8032, the state of the default QinQ SAPs in the VPLS service can be managed using a separate G.8032 control instance.
A G.8032 control instance cannot use default QinQ SAPs.
MVPLS with xSTP can be used for loop prevention. The default QinQ SAPs inherit the state from the associated MVPLS instance.