Design of IP+ATM switch router architecture for best-effort and guaranteed services in the next generation public data networks

This paper proposes IP+ATM switch router architecture for best-effort and guaranteed services for the next generation public data networks. The proposed architecture has advanced features: (1) scalable flow control, (2) scalable packet forwarding performance, (3) QoS control, and (4) a novel table lookup algorithm. Hardware-based high-speed IP packet forwarding engines and a sophisticated ATM switch are combined in the proposed architecture. Distributed packet forwarding engines are interconnected via the core ATM switching fabric, which employs a proprietary flow control mechanism. ATM traffic management and OAM capabilities are fully utilized to provide QoS guarantee for the label switch path (LSP). By combining the high-speed IP packet forwarding and sophisticated ATM LSP control mechanism, we can build the IP+ATM switch router