Distributed design and provisioning of survivable multi-domain optical networks

Providing protection in multi-domain optical networks amounts to ensuring protection for the inter-domain links. Due to scalability issues, almost all previous studies focused on heuristics. In this study, under the assumption of a distributed network management, we propose a large scale optimization ILP model allowing to obtain exact solutions with various traffic instances, on a network with 10 domains. The model relies on p-cycles in order to protect the inter-domain links, and on FIPP p-cycles for the segment/path protection in each individual domain. Experiments were successfully conducted on a multi-domain network with 10 domains. They include a comparison of bandwidth requirements between the proposed distributed scheme and a centralized scheme.