A Novel Distributed Destination Routing-Based Availability-Aware Provisioning Framework for Differentiated Protection Services in Optical Mesh Networks

In optical mesh networks, different protection schemes can be used to satisfy the service availability against network failures. However, in order to satisfy a connection's service-availability requirement in a distributed controlled WDM with dynamic traffic and no wavelength converters, we need a framework to manage the provisioning process and to select a proper protection scheme. In this paper, we propose a novel distributed Availability-Aware provisioning framework based on intelligent destination routing to assign and manage the working and the protection paths as well as their wavelength(s) of each connection. Our proposed framework probes the k most reliable paths in parallel. The probing technique used in this framework is the first probing technique that probes each path as both a candidate working path and a candidate shared protection path at the same time. Moreover, we propose to use connection availability as a metric for providing differentiated protection services in WDM mesh networks. Based on the availability information collected, our provisioning strategy selects an appropriate level of protection to each connection. The effectiveness of our provisioning approaches is demonstrated through simulation results.