Inter-Area Shared Segment Protection of MPLS Flows Over Agile All-Photonic Star Networks

We study the resilience of MPLS flows over an agile all-photonic star WDM network (AAPN). On the basis of our previous inter-area optimal routing architecture, we propose and develop a dynamic inter-area shared segment-based protection (SSP) framework. We consider the dynamic protection for optimal inter-area working paths and improve the recovery time by segment-based protection. We develop a distributed partial routing information management to increase the scalability in multi-area networks while maintaining good performance compared with the case of complete information. By simulation, we show that our framework outperforms existing scheme. Furthermore, our approach shows its good potential to be a protection solution for inter-AS protection.