Abstract
AbstractThe widespread use of cloud computing infrastructure increases energy consumption issue in data centres. Many network providers and researchers investigated and implemented different approaches to optimise energy in networks. Meanwhile, software-defined network (SDN) has emerged as a new possibility to save energy because it can separate control plane and data plane in order to optimise routing and enables flexible control in the network. To maintain administrative and technical requirements, defining and placing rules for routing policies in the network are an important concern. In this study, the authors conducted a systematic literature review of rule placement approaches for energy-aware routing (EAR) in SDNs. The search identified 965 articles from Web of Science, Scopus, IEEE Xplorer, ScienceDirect, Springer Linked, EBSCOhost, Emerald and Google Scholar, published since 2013. After multi-stages of selection process, 23 articles are selected for the review study. The study aims to discuss approaches and their corresponding methods used in rule placement for EAR. EAR approaches in implementing rule placement achieved good result but with limitations. The authors analyse how the rule placement approaches affect the performance of the network to address future research attentions for further EAR improvement.KeywordsRule placementEnergy-aware routingSoftware-defined networksOpenFlow
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