Multi-vendor interconnection-based emergency multi-layer networks in disaster recovery

For the recovery of multi-layer networks after disaster, in this paper, we introduce two correlated planning problems which are based on the multi-vendor interconnection approach: 1) planning of emergency multi-layer network construction with the IP-over-Optical overlay model, and 2) planning of an operational process for control/management-plane (C&M-Plane) network recovery. We propose two corresponding sub-schemes for individual problems: i) an integer linear programming (ILP)-based network planning scheme which enables the cost-efficient emergency multi-layer network recovery, and ii) an operation planning scheme which computes an operational process for C&M-Plane recovery so that the C&M-Plane itself can be rebuilt as quick as possible. Simulations are conducted for sub-scheme i), showing the efficiency of the multivendor interconnection approach in multi-layer network recovery. Demonstration with a two-vendor test-bed is performed for sub-scheme ii), validating the possibility of the automatic recovery of C&M-Plane networks. These schemes for network design and operation contribute to the cost-reduction in disaster recovery, and result in quick recovery.