This read-write object specifies whether the Ethernet Traffic Port delivers a transparent, port-based service carrying all traffic as one flow, or a multi-flow, VLAN-based service that splits traffic into multiple separately managed flow points. An administrator sets this to match the commercial service being delivered on the port, since it governs whether flow-point-level configuration (VLAN membership, per-flow QoS) applies at all. For example, selecting the multi-flow VLAN-based service type on a port lets an operator sell several separate EVPL circuits, each defined as its own flow point, off the same physical interface.