QoS-aware wavelength path set-up method using multiple overlay in optical network management system

This paper proposes scalable architecture that can quickly reply an answer when route setting is requested to a control unit like an Autonomous System (AS). It can manage network resources for service platform where both services and network elements are treated as components in a unified manner like distributed web service, in order to find an adequate combination of a server and a route. In the proposed method, hierarchical database is established to manage information related to optical network solution. Moreover, with multiple and overlapped overlay, we compute multiple candidate routes with different characteristics like available bandwidth and the number of hops, before route set-up. Finally we show the effectiveness of the proposed method in terms of blocking probability and scalability.