Availability-aware service provisioning in SD-EON-based inter-datacenter networks

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• 作者：Xiaoliang Chen ; Fan Ji ; Shilin Zhu ; Qinkun Bao…
• 刊名：Photonic Network Communications
• 出版年：2016
• 出版时间：June 2016
• 年：2016
• 卷：31
• 期：3
• 页码：543-549
• 全文大小：912 KB
• 刊物主题：Computer Communication Networks; Electrical Engineering; Characterization and Evaluation of Materials;
• 出版者：Springer US
• ISSN：1572-8188
• 卷排序：31

文摘

The tremendous transmission capacity and flexible spectrum allocation scheme make elastic optical networks (EONs) one of the most promising infrastructures for constructing the interconnection in datacenter (DC) networks. Meanwhile, as DC traffics exhibit highly dynamic and heterogeneous features, differentiated service provisioning schemes are desired. In this paper, we take the advantage of centralized network control and management provided by the software-defined elastic optical networks (SD-EONs) and investigate availability-aware service provisioning in SD-EON-based inter-datacenter (inter-DC) networks. We first describe the problem of availability-aware service provisioning in SD-EON-based inter-DC networks and present the theoretical analysis for service availability. Then, we propose an availability-aware service provisioning algorithm (ASP) that leverages different path protection schemes to satisfy different service availability requirements. A service downgrading (SD) strategy is also designed as a supplement of ASP to further improve its performance. Simulation results show that the proposed ASP-SD algorithm can effectively improve the spectrum efficiency without sacrificing availability.KeywordsDatacenter networksSoftware-defined elastic optical networksAvailability-aware service provisioning