| With the rapid development of Internet technology,the Internet traffic grows exponentially at a rate of 75-125% every year.The existing network architecture is far from satisfying the network traffic that has expanded so rapidly,network fossilization has become increasingly prominent.In addition,with the end users' demand for high-capacity bandwidth keeps the continuous growth,the Internet is facing unprecedented challenges now.In order to solve the problem of network fossilization in the existing network,optical network virtualization solution is proposed.In order to solve the problem of the bandwidth requirement in the existing network,the optical network bandwidth virtualization solution is proposed.In order to improve the utilization ratio of WDM optical network resources and reduce the blocking rate of service request,firstly this paper analyzes the shortages of the optical network virtualization algorithm at present.Then,We propose CL-VONM(Link Coordinated Optical Network Virtualization Mapping)algorithm and compared with SC-VONM(Node-continuous optical network mapping)and BASE-VONM(Basic optical network mapping).Experiment results show that this algorithm can obviously improve the utilization rate of network resources and reduce the blocking probability.This algorithm considers the constraint relationship between the binding nodes and the adjacent links and reduces the number of path hops between nodes,which greatly increases the opportunity for infrastructure to accept future virtual network requests.In addition,we study the bandwidth virtualization based on WDM optical network,and design the service provision platform of bandwidth virtualization through Web Service.This software platform consists of 3 parts: Web service interface module,resource processing collection module and database module.Next,the author programs and displays Web site.Finally,the paper displays the web services.results show that the software reaches the goal that the paper expected. |
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