In the design and implementation of NDS-2,I bring forward that network design simulator should include network protocols simulation, network devices simulation, and network application simulation.

• NDS-2具有如下特点:TCP/IP协议仿真基于真实的TCP/IP协议栈、物理网络仿真基于网络协议模型、设备仿真基于网络设备模型、应用仿真基于网络应用的统计特性模型、采用事件驱动方式来进行网络仿真、采用脚本语言和面向对象语言相结合。