SDN架构下VCF控制性能测试研究

发布时间：2018-05-04 07:45

本文选题：Comware + V7　；参考：《西安电子科技大学》2014年硕士论文

【摘要】：传统网络是面向连接的,主要关注点是设备、协议和网络管理,会过度依赖网络设备商对网络设备的开发。传统网络暴露出越来越多的问题,同时互联网对于大数据和云计算的需求,需要一个可控的网络架构,因此SDN,即软件定义网络,应运而生并迅速发展。追随SDN的浪潮,H3C公司在传统网络设备基础上自主研发了SDN架构的核心组件即VCF控制器。VCF控制器采用虚拟化实现,通过集中控制解决了传统网络中应用跟网络分离的状况,同时为云计算和虚拟化提供了技术保证。本文主要使用VCF控制器实现SDN架构的搭建,利用控制平面和数据平面的分离,面向应用提供可编程接口,保证端到端的服务,实现对系统资源的整合利用。本论文主要研究分析VCF控制器对于网络设备的控制能力。首先进行系统需求分析,然后详细设计测试用例进行黑盒测试,最后与主流控制器Opendalight的性能进行对比,更直观的研究VCF的整体性能。在测试之前需要对SDN架构及其实现协议OpenFlow进行研究分析,在此基础上结合VCF的特点,从功能测试和性能测试两方面进行测试。功能测试主要研究VCF控制器利用OpenFlow协议实现与网络设备的信息交互和流表下发。依据控制器与交换机的信息交互流程图,分别从链路发现和结点管理以及VCF的流表下发三方面进行测试,涉及到的测试方法有因果图法,判定表法。需要注意的是测试中采用的网络设备是以Comware V7为系统的SR66路由器。性能测试主要包括规格测试和压力测试。其中规格测试包括VCF控制器支持的最大网络数,控制器与交换机信息交互采用的packet-in报文和packet-out报文的速率。压力测试包括满配置下的流表下发和内存泄露测试。由于设备支持两种转发,所以在整个测试过程中,要注意设备采用的是普通报文转发还是流表转发。系统测试同时也是VCF控制器与Comware V7操作平台的融合测试。Comware V7是全新的网络平台系统,需要先进行SR66产品的流量转发研究,然后结合控制器的实现特性进行交互测试。
[Abstract]:The traditional network is connection-oriented, the main focus is equipment, protocol and network management, which will rely on the development of network equipment. Traditional network has exposed more and more problems, and the demand of Internet for big data and cloud computing needs a controllable network architecture, so SDN, that is, software defined network, came into being and developed rapidly. Following the tide of SDN, H3C has independently developed the core component of SDN architecture, that is, VCF controller. VCF-controller is realized by virtualization, which solves the problem of separation between application and network in traditional network through centralized control. It also provides technical guarantee for cloud computing and virtualization. In this paper, the VCF controller is used to build the SDN architecture, the control plane and data plane are separated, the application oriented interface is provided, the end-to-end service is guaranteed, and the system resources are integrated and utilized. This paper mainly studies the control ability of VCF controller to network equipment. First, the system requirements are analyzed, then the test cases are designed in detail to test the black box. Finally, the performance of Opendalight is compared with that of the mainstream controller, and the overall performance of VCF is studied more intuitively. Before testing, we need to research and analyze the SDN architecture and its implementation protocol, OpenFlow. On this basis, combining the characteristics of VCF, we test from two aspects: function test and performance test. The main research of function test is that VCF controller uses OpenFlow protocol to realize information exchange and stream table sending with network equipment. According to the flow chart of the information exchange between the controller and the switch, the link discovery and node management as well as the flow table generation of VCF are tested respectively. The test methods involved are causality diagram method and decision table method. It is important to note that the network equipment used in the test is a SR66 router based on Comware V7. Performance testing mainly includes specification test and stress test. The specification test includes the maximum number of networks supported by the VCF controller, the rate of packet-in and packet-out messages that the controller uses to interact with the switch information. Stress tests include full-configured streaming table posting and memory leak testing. Because the device supports two kinds of forwarding, in the whole testing process, we should pay attention to whether the device adopts normal message forwarding or stream table forwarding. The system test is also the fusion test of VCF controller and Comware V7 operating platform. Comware V7 is a new network platform system. It needs to carry out the research of traffic forwarding of SR66 products first, and then carry on the interactive test combined with the realization characteristic of the controller.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP393.02

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