Implementation of QoS control capabilities in SINET3

This paper describes the QoS control capabilities in the new Japanese academic network, SINET3. SINET3 is a nationwide QoS-aware multi-layer network for more than 700 universities and research institutions and provides a variety of high-quality network services including packet-based QoS services and circuit-based bandwidth-on-demand services. These diversified network services are provided by effectively combining layer-1 switches with layer-2 multiplexing and IP/MPLS routers. This paper first explains how the network accommodates a wide variety of network services such as multilayer and VPN services. It next defines the QoS classes, clarifies QoS control capabilities for packet and circuit-based services, and shows evaluation results for an experimental environment reflecting actual network conditions. The paper focuses on actual implementations over the nationwide network composed of 75 layer-1 switches and 12 IP/MPLS routers.