基于NS2的距离向量算法仿真及结果分析

NS(Network Simulator)是面向对象的大型离散事件可视化仿真器，它不仅能实现复杂的网络数据传输和拓扑结构的仿真．还能模拟各种IP网络环境。该文阐述了NS的体系结构、特点、基于NS网络仿真的方法和一般过程。实现了一个20结点的局域网的距离向量路由算法仿真，并用Nam工具实现了DV算法的动画仿真效果，用Xgraph工具描绘了链路上的流量曲线，实验表明在DV算法下数据包丢失和阻塞干扰等现象的客观存在。

Simulation and Analysis of Distance Vector Algorithm Based on NS2

NS(Network Simulator)is an object-oriented visual simulator base d on large-scale discrete event. It not only simulates the transmission of netwo r k data and topology architecture but also simulates all kinds of IP network circ u mstance. This paper describes the architecture and characteristics of NS. And it also gives the technique and the general process based on NS. The Distance Vect or(DV) algorithm simulation of 20-node LAN is implemented and the effects of d ynamic simulation by DV algorithm is realized by Nam. This paper, portray s the traffic curve of the link with Xgraph . The experiment shows that these phenomena,such as the packet losing and interference, are existent by using t he DV algorithm.