IP fast reroute control using centralized control plane architecture

An IP fast reroute control architecture using a centralized control plane where the control plane and data plane are physically separated is presented. In IP fast reroute processes, route computation and failure restoration are independently performed. Our architecture places the route computation function in the central control server to ensure scalability. As for route configuration, the size of the backup routing table is a significant issue in IP fast reroute architecture. We present a backup-table sharing method to reduce its size.