基于SDN开源平台路由映射解决方案的研究和实现

发布时间：2018-05-28 06:00

本文选题：SDN + OpenFlow　；参考：《北京邮电大学》2017年硕士论文

【摘要】：软件定义网络(Software Defined Network,SDN)在过去的10年间应运而生并迅速发展,OpenFlow协议也成为当今软件定义网络的重要组成部分,被绝大多数的硬件厂商所支持。然而当前SDN项目研究关注的重心仍在二层转发,基于三层路由的研究相对较少。这很大程度上限制了 SDN网络的规模和SDN在网络层业务的拓展。本文依托于国家重点实验室仪器设备研制项目“网络可定义的虚拟化交换网络平台”,提出了一种基于SDN开源平台路由映射解决方案,在交换平台所划分的虚拟网中提供路由服务,并且实现与传统网络的互连。在实现路由功能过程中,本文提出了一种基于映射的动态管理虚拟网资源的方法,通过创建虚拟路由器映射虚拟网内交换机网络,并同步物理交换机所在网络的状态信息,使虚拟路由器实现路由计算并根据映射下发流表,完成数据包转发,并能兼容OSPF、BGP等路由协议。然后,本文详细描述了基于SDN开源平台路由映射解决方案的设计与实现,包括底层物理拓扑管理,可配置的高层虚拟拓扑,底层物理拓扑与高层虚拟拓扑映射关系的维护,数据包的处理,路由学习及流表下发等。本文设计了包括网络互连场景,变化拓扑场景在内的多个测试场景,对路由映射解决方案进行功能测试以及可行性测试,为基于SDN开源平台路由映射解决方案提供了多角度全方位的验证。
[Abstract]:In the past 10 years, Software Defined Network (SDN) has emerged and developed rapidly. OpenFlow protocol has also become an important part of the software definition network, which is supported by most hardware manufacturers. However, the focus of SDN research is still layer 2 forwarding, and the research based on three layer routing is relatively rare. This greatly limits the scale of SDN network and the expansion of SDN service in network layer. This paper puts forward a route mapping solution based on SDN open source platform, which is based on the National key Laboratory instrument equipment Development Project "Network Definable Virtual switching Network platform". The routing service is provided in the virtual network divided by the switching platform, and the interconnection with the traditional network is realized. In the course of realizing the routing function, this paper proposes a method of dynamically managing virtual network resources based on mapping. By creating virtual router to map the virtual network switch network, and synchronizing the state information of the network in which the physical switch is located, this paper proposes a method of dynamic management of virtual network resources based on mapping. The virtual router can realize routing calculation and send down the flow table according to the mapping, complete the packet forwarding, and be compatible with OSPFN BGP and other routing protocols. Then, this paper describes in detail the design and implementation of routing mapping solution based on SDN open source platform, including the underlying physical topology management, the configurable high-level virtual topology, the maintenance of the mapping relationship between the underlying physical topology and the high-level virtual topology. Packet processing, routing learning and flow table sending and so on. This paper designs several test scenarios, including network interconnection scenario and changing topology scenario, to test the function and feasibility of routing mapping solution. It provides multi-angle and omnidirectional verification for routing mapping solution based on SDN open source platform.
【学位授予单位】：北京邮电大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP311.52;TP393.0

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