路由信息协议虚拟仿真系统设计

Virtual Simulation System Design for Routing Information Protocol

针对RIP概念和原理过于抽象不易于学生理解和掌握的教学难点,在Visual Studio环境下利用C#语言开发了RIP动态路由虚拟仿真系统。该系统包括原理说明、显示、控制和计时器等子系统,具有动态模拟RIP在水平切割、毒性逆转、触发更新及抑制计时等稳健机制下的各种路由信息报文交换、路由表实时更新以及Bellman_Ford最短路径算法原理等功能。实践表明,该系统能为学生全面、深入地理解RIP工作原理,领会动态路由特征提供有效帮助。

In view of the teaching difficulty that the concepts and principle of routing information protocol(RIP)are always abstract and hard to be understood for students,a virtual simulation system for RIP is developed using C#on the Visual Studio platform.The system consists of principle illustration sub-system,display sub-system,control sub-system and timer sub-system.Based on the RIP’s robust mechanisms which are split horizons,poison reverse,triggered updates and hold down timer,all the routing functions such as exchanging of routing information packets,updating of routing tables and the principle of least-cost algorithm Bellman_Ford can be simulated dynamically.The teaching practice shows that the simulation system developed in the paper can provide effective help for students to understand the principle of RIP and the characteristics of dynamic routing protocol thoroughly.