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A Visualization CSMA/CD Simulation / 可视化的载波侦听多路访问/冲突检测模拟器

HTML 95.30% JavaScript 4.70%

csma-cd-simulation's Introduction

CSMA-CD-Simulation

技术栈

Nodejs Express+Socket.io+Boostarp+Jquery

CSMA/CD 介绍

载波侦听多路访问／碰撞检测（英语：Carrier Sense Multiple Access with Collision Detection，CSMA/CD）

此方案要求设备在发送帧的同时要对信道进行侦听，以确定是否发生碰撞，若在发送数据过程中检测到碰撞，则进行如下碰撞处理操作：

发送特殊阻塞信息并立即停止发送数据：特殊阻塞信息是连续几个字节的全1信号，此举意在强化碰撞，以使得其它设备能尽快检测到碰撞发生。 在固定时间（一开始是1 contention period times）内等待随机的时间，再次发送。 若依旧碰撞，则采用截断二进制指数避退算法进行发送。即十次之内停止前一次“固定时间”的两倍时间内随机再发送，十次后则停止前一次“固定时间”内随机再发送。尝试16次之后仍然失败则放弃传送。

如何运行

git clone [email protected]:arcosx/CSMA-CD-Simulation.git
cd CSMA-CD-Simulation
npm instll
node index.js
浏览器打开 一个至多个窗口（地址：http://localhost:3000/）

演示效果

![Kapture 2018-05-16 at 21.32.00](http://p0xjmrizh.bkt.clouddn.com/Kapture 2018-05-16 at 21.32.00.gif)

csma-cd-simulation's People

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