网络虚拟化仿真软件综述

网络虚拟化模拟软件是网络虚拟化和虚拟化软件两种概念的集合体，通过虚拟化技术在主机上实现了网络设备的虚拟化，帮助用户自定义地构建与配置网络拓扑，是网络工程师学习培训以及学术研究者进行实验验证的重要辅助工具. 为帮助读者针对需求选择合适的网络虚拟仿真软件，在归纳整理了有关研究文献的基础上，以软件架构与技术演化为脉络，系统地介绍了网络虚拟化软件的诞生和发展历程，以及国内外学者对网络虚拟化仿真软件的研究现状，介绍了不同时期具有代表性的网络虚拟化仿真软件，如GNS3 （graphical network simulator 3），EVE-NG （emulated virtual environment-next generation）等，阐述了这些软件的功能、性能、特点以及适用范围等. 最后展望了在技术与需求不断发展的未来，网络虚拟化模拟软件将具有兼容性、交互性和智能化的特点，并将在各个行业得到应用. 

Review on Network Virtualization Simulation Software

Network virtualization simulation software (NVSS) is an integration of network virtualization and virtualization software, serving as an important auxiliary tool for network engineers in learning and training, and researchers in experimental verification. It realizes the virtualization of network equipment on the host through virtualization technology, which helps to build and configure user-defined network topology. In order to help users choose the suitable NVSS as desired, this paper systematically introduces its birth and development as well as domestic and foreign research status, based on relevant research literature and the evolution of software architecture and technology. Furthermore, representatives of NVSS in different periods, such as graphical network simulator 3 (GNS3) and emulated virtual environment-next generation (EVE-NG), are listed with a focus on the functions, performances, properties, characteristics and application scope. Finally, the prospects of NVSS technology and demand are discussed. NVSS will be characterized by compatibility, interactivity and intelligence, and may be applied in various industries.