Spare capacity allocation and optimisation in a distributed GMPLS-based IP/WDM mesh network
Computer Communications
Differentiated survivability with improved fairness in IP/MPLS-over-WDM optical networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
A novel class-based protection algorithm providing fast service recovery in IP/WDM networks
NETWORKING'08 Proceedings of the 7th international IFIP-TC6 networking conference on AdHoc and sensor networks, wireless networks, next generation internet
Logical topology design for IP rerouting: ASONs versus static OTNs
Photonic Network Communications
A novel approach to provision differentiated services in survivable IP-over-WDM networks
Optical Switching and Networking
Optimized design of survivable MPLS over optical transport networks
Optical Switching and Networking
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The survivability of IP over WDM networks gains importance as network traffic keeps growing. Recovery at the lowest layer is fast and scalable. However, it is usually considered to provide poor network utilization. In this article we propose a resilience scheme based on recovery at the lowest layer in which intralayer and interlayer backup resource sharing is utilized to improve the network utilization. By applying interlayer backup resource sharing, we can totally depend on the reserved backup resources for fiber link failures to guarantee 100 percent recovery of IP router failures. In addition, by applying intralayer backup resource sharing, the network utilization improvement of recovery at the lowest layer is much more significant than at the highest layer. Simulations results show that the proposed scheme can efficiently improve network utilization and be even more capacity-efficient than resilience schemes based on recovery at the highest layer.