In this paper, we address the problem of protection of Cloud-ready Elastic Optical Networks (C-EONs) from a single link failure (a fiber cut), the most common failure. Any protection scheme must be designed to ensure rapid failure recovery as data is lost continuously till the fault is identified and restored. Our protection scheme, crStreams (cloud-ready streams) overcomes the shortcomings of failure independent path protecting p-cycles (FIPP p-cycles) for C-EONs, guarantees rapid failure recovery, ensures service relocation and is also resource aware. Recently, due to rapid increase in data transmission rate, design of energy efficient schemes has attracted a lot of research attention. So, we propose four polynomial-time algorithms that efficiently employ crStreams for protection and further minimize energy consumption to the extent possible for dynamic requests. To the best of our knowledge, this paper is the first to propose algorithms for survivability of C-EONs, addressing the joint problem of minimizing energy consumption and resource utilization to the extent possible for dynamic requests while ensuring rapid failure recovery. Considering all conducted experiments, maximum improvement in energy consumption, resource sharing and bandwidth blocking ratio is 39.83 %, 44.44 % and 41.54 % respectively over the energy-greedy strategy.

中文翻译：

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在云就绪弹性光纤网络中实现节能资源感知保护和快速故障恢复


在本文中，我们解决了保护云就绪弹性光纤网络 （C-EON） 免受最常见故障（光纤切断）影响的问题。任何保护方案都必须设计为确保快速故障恢复，因为在识别和恢复故障之前，数据会不断丢失。我们的保护方案 crStreams（云就绪流）克服了 C-EON 的故障独立路径保护 p 周期 （FIPP p-cycles） 的缺点，保证了快速故障恢复，确保服务重新定位，并且还具有资源感知能力。近年来，由于数据传输速率的快速提高，节能方案的设计引起了许多研究关注。因此，我们提出了四种多项式时间算法，它们有效地使用 crStreams 进行保护，并进一步将动态请求的能耗降至最低。据我们所知，本文首次提出了 C-EON 生存能力的算法，解决了在确保快速故障恢复的同时，尽可能减少动态请求的能源消耗和资源利用的共同问题。综合考虑所有进行的实验，与能量贪婪策略相比，能耗、资源共享和带宽阻塞率的最大改进分别为 39.83 %、44.44 % 和 41.54 %。