毕业论文（设计）软件定义光网络中时间相关的业务调度策略.docVIP

北京林业大学本科毕业论文(设计) PAGE \* MERGEFORMAT PAGE \* MERGEFORMAT I 软件定义光网络中时间相关的业务调度策略 摘要 随着大数据时代的到来，数据中心与光网络互联已经成为服务高性能数据中心应用的基础设施。针对日益提升的用户数量与高等级用户服务质量的需求，当前网络面临着全网控制复杂与资源利用低效等问题，支持数据中心资源与网络资源协同调度的跨层控制技术成为提升网络整体性能的关键，而软件定义光网络的灵活性与智能性恰巧为跨层优化提供了更加便捷的技术方案。 基于上述现状，本论文围绕软件定义光网络中时间相关的业务调度问题，在网络控制架构和资源调度策略方面展开了深入研究。在数据中心内部光互联的场景中，针对时间敏感的资源调度问题，创新性提出了一种时间感知软件定义光网络跨层控制架构，将时间因子引入到该跨层控制架构中，提出考虑时间因素的业务调度策略，并将策略部署到控制器中，根据业务的时间敏感性在时间维度上弹性的分配资源，实现时间相关的业务调度。仿真显示该策略通过考虑时间因素，能够灵活高效的分配网络与应用资源，改善网络因资源瓶颈带来的阻塞和资源利用率低下等问题。 关键词：软件定义网络，数据中心光互联，跨层优化，时间维度 A Time-related Service Scheduling Strategy in Software Defined Optical Network Electronic Information Science and Technology 11-2 Ning Xian Supervisor Cheng Yan-xia Abstract With the advent of big data era, datacenter interconnected with optical network become the fundamental infrastructure to serve the high-performance datacenter application. Current network is facing problems of complex control and inefficient use of resources for the increasing number of users with a high level quality of service requirements. Cross-layer control technology which support coordinated scheduling between datacenter and network resources has become the key to improve the overall network performance. The software defined optical network just provides?a?wonderful?solution?for cross-stratum optimization because of its flexibility and intelligence. Based on the above situation, this paper carried out in-depth research on the network control architecture and resource scheduling strategy around the problem of time-related service scheduling in software defined optical network. A novel time-aware software defined optical networking architecture is proposed in OpenFlow-based intra-datacenter optical interconnection scenario to solve the problem of resource scheduling in this paper. A time factor is introduced into the cross-stratum optimization. In the controller, a time-aware service scheduling strategy is introduced and deployed, which allocates resources for dat