SQoS as the Base for Next Generation Global Infrastructure

The convergence towards a unified global WAN platform, providing both best effort services and guaranteed high quality services, sets the agenda for the design and implementation of the next generation global information infrastructure. The absence of design principles, allowing for smooth and cost efficient scalability without loss of control over the structurally based properties may prevent or seriously delay the introduction of globally available new application and switching services.Reliability and scalability issues are addressed from a structural viewpoint. The concept of Structural Quality of Service (SQoS) has been introduced as an attempt to establish a base for reliability management in complex large-scale communication infrastructures. Two approaches to provide SQoS are introduced, and results for the N2R(p;q;r) family of vertex symmetric graph structures are presented and discussed. Finally, some relevant research initiatives are presented.