The proposed architecture provides quality of service (QoS) and class of service (CoS) guaranteed communication as well as best effort communication. For example, L5-Reliable-path is mapped to L4-Reliable-path. In L4, L4-reliable-path may be provided by some mechanisms such as the reliability control and the sequence control.
L5-CoS-path is mapped to L4-CoS-path, which is mapped to L3-CoS-path. In L3, L3-CoS-path may be provided by a DiffServ mechanism.
Similarly, L5-QoS-path is mapped to L4-QoS-path, which is mapped to L3-QoS-path, which is mapped to L2-QoS-path. L2-QoS-path may be provided by a virtual circuit mechanism such as MPLS in L2, or it may further be mapped to L1-QoS-path. In L1, QoS guaranteed communication is provided by a circuit switching mechanism.