NS2是指 Network Simulator version 2，NS（Network Simulator） 是一种针对网络技术的源代码公开的、免费的软件模拟平台，研究人员使用它可以很容易的进行网络技术的开发，而且发展到今天，它所包含的模块几乎涉及到了网络技术的所有方面。所以，NS成了目前学术界广泛使用的一种网络模拟软件-NS2 refers to the Network Simulator version 2, NS (Network Simulator) is a network technology for open source code, free software simulation platform, the development of researchers to use it can be network technology easily, and development to today, it contains the module involved in almost all aspects of network technology. So, NS has become a widely used network simulation software in academic circles at present