基于模型驱动工程模式的SDN网管系统设计与实现

发布时间：2018-01-06 07:15

本文关键词：基于模型驱动工程模式的SDN网管系统设计与实现　出处：《浙江大学》2017年硕士论文　论文类型：学位论文

【摘要】：近些年,随着网络规模的急剧扩大以及云计算、大数据等新型业务的出现,传统网管系统逐渐地暴露出其在网络管理方面的缺陷。一方面,在传统网络中,为了应对来自网络数据流量爆炸性增长带来的压力和挑战,设备厂商在网络设备上叠加了越来越多的技术元素,如虚拟局域网、区分服务、多协议标记交换、网络地址转换等,使得传统网管系统的功能越来越依赖于设备厂商,逐渐趋于僵化。另一方面,随着SDN(Software Defined Networking,软件定义网络)的快速发展,为传统网络的变革带来了更多的机会。SDN重构了传统网络架构,采取了完全不同的设计思想,使得传统的网管系统已经不再适用于新的网络架构,因此需要研发适用于新型网络的网管系统,用于提高网络管理效率和促进网络功能创新。本文重点是在模型驱动工程模式的基础上,结合SDN的自身特点,将模型驱动工程模式融入到SDN网管系统的开发实现中,使用YANG建模语言对管系统中的业务功能建立高层抽象,分析并设计了网管系统中的拓扑管理模块、配置管理模块、流表管理模块和设备管理模块等核心功能。另外,在实现网络配置管理模块时,采用NETCONF协议取代了传统网管系统中作为网络配置管理协议的SNMP协议,设计了基于NETCONF协议的网络配置管理模型。NETCONF协议在网络配置方面比SNMP协议支持更多的操作,同时采用面向连接的会话传输数据,在增强网络配置功能的基础上,也有效地提升了网络配置模块的安全性。与传统网管系统相比,采用模型驱动工程模式设计的SDN网管系统,不仅能够支持网管功能的模块化开发和动态化扩展,有效地提高SDN网管系统运维效率,也能够适应网络架构的不断演进和升级。
[Abstract]:In recent years, with the rapid expansion of network scale and cloud computing, big data and other new services, the traditional network management system gradually exposed its shortcomings in network management. On the one hand, in the traditional network. In order to cope with the pressure and challenge brought by the explosive growth of network data traffic, device manufacturers have superimposed more and more technical elements on network devices, such as virtual local area network, differentiated services, multi-protocol label exchange. Network address translation makes the function of the traditional network management system more and more dependent on the equipment manufacturers, gradually becoming rigid. On the other hand. With the rapid development of SDN(Software Defined networking, software defined networks. SDN brings more opportunities for the transformation of the traditional network. SDN reconstructs the traditional network architecture and takes a completely different design idea, which makes the traditional network management system no longer suitable for the new network architecture. Therefore, we need to develop a new network management system to improve the efficiency of network management and promote network function innovation. This paper focuses on the model-driven engineering model, combined with the characteristics of SDN itself. The model-driven engineering model is integrated into the development and implementation of SDN network management system, and the high-level abstraction of the business functions in the management system is established by using the YANG modeling language. The core functions of the network management system, such as topology management module, configuration management module, flow table management module and equipment management module, are analyzed and designed. In addition, the network configuration management module is implemented. The NETCONF protocol is used to replace the SNMP protocol which is used as the network configuration management protocol in the traditional network management system. The network configuration management model based on NETCONF protocol. Net conf protocol supports more operations than SNMP protocol in network configuration. At the same time, using connection-oriented session to transfer data, on the basis of enhancing the network configuration function, it also effectively improves the security of network configuration module, compared with the traditional network management system. The SDN network management system based on model-driven engineering mode can not only support the modular development and dynamic expansion of the network management function, but also effectively improve the efficiency of the SDN network management system operation and maintenance. It can also adapt to the continuous evolution and upgrading of the network architecture.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP393.07

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