Research On WDM Optical Network Supporting The Routing Technology Of Cloud Computing

With the development of cloud computing technology,the industry of its ecosystem is getting perfect.At present,more and more business began to migrate to the Cloud Platform,and the traditional Internet business model is been replacing.The cloud computing business needs in the network bandwidth,transmission and Quality of Service have shown some new features.These new features require the performance provided by the optical network higher.How to make the WDM optical network carry cloud business more efficiently,improve WDM optical networks' resource utilization rate,reduce the Service Request blocking rate,and configured the optical network more flexibility as well as service on demand,is the hotspots in the academic and industrial fields of optical networks' research.In order to improve the utilization ratio about the WDM optical network resources and reduce the blocking rate of Service Request,this paper analyzes the shortages of the optical network virtualization and RWA algorithm for cloud computing at present.Then the author proposes a OneStep algorithm which are Min-Span algorithm and Min-W algorithm that combined optical network virtualization with RWA algorithm,and studies the algorithms immediately in two parts: mapping requests and candidate node.Experiment results show that compared with the Two-Step algorithm,the One-Step algorithm can improve the utilization ratio of optical network resources and also reach a lower blocking ratio of service requests.What's more,compared with fixed node mapping,flexible node mapping algorithm can not only taking advantage of network virtualization,but also can efficiently utilize optical network resources.According to the characteristics of cloud computing business,this paper also designs the optical network routing service,aiming at the problem of the flexibility of Network Configuration and the services provided on demand.In order to complete this part,the author mainly uses the Web service technology to design and develop the module to realize the virtualized layer service about OXC and optical fiber link in the optical network,and arranges the One-Step algorithm into the software platform.At last the author verified the software.Results show that the software can be used to deliver optical network resources dynamic,configure optical network resources flexible and provide optical network routing services diversity.The software designed achieves the expected results.