城域网毕业设计.doc

城域网光纤传输网络规划与设计 摘要 城域网光纤传输网了是本地传输网络的一个重要的组成部分，主要是在一个城市建立核心层，汇聚层和接入层，使其可以满足一个城市的主要通信功能。随着社会的不断发展，目前人们对于通信业务的需求量正在快速的增长，所以建立一个快速的城域网光纤传输网络是必要的。而光纤传输网拥有超高速率，超大容量和超长传输距离的传输优点，更好的满足了人们对于通信的需求。 本文通过对光纤传输网络组网方式的研究和现有的设备选取，提出合理的方案来组建一个快速的城域网光纤传输网络，之后用思科软件对所设计的网络进行仿真，了解其物理链路是否可以正常的运行，对网络目前面临的一些问题提出合理的解决方案。 关键词：光纤传输网络；城域网；网络仿真；组网方法 THE OPTICAL FIBER TRANSIMISSTION NETWORK PROGARAM PLANNING AND DESIGN ON?METROPOLITAN AREA NETWORK ABSTRACT Metropolitan optical fiber transmission network of local transmission network an important part, mainly in a city to build the core layer, convergence layer and access layer, so that it can meet the main communication function of a city. With the continuous development of the society, the demand for the communication business is growing rapidly, so it is necessary to build a fast man optical fiber transmission network.. The optical fiber transmission network has the advantages of ultra high speed, ultra large capacity and ultra long transmission distance, and it can meet the needs of the communication.. In this paper, the research on optical fiber transmission network and existing equipment selection, reasonable plan proposed to build a fast metropolitan area network optical fiber transmission network, followed by Ciscos software to simulate the designed network, understand the physical link to the normal operation, put forward reasonable solutions for some problems currently faced by the network. Key words：Optical fiber transmission network; Metropolitan area network; network simulation; networking method  目 录 1 绪论…………………………………………………………………………………1 1.1 课题背景及目的……………………………………………………………… 1.2 国内外研究状况……………………………………………………………….1 1.3 课题研究方法………………………………………………………………….2 2 城域网光纤传输网络简介…………………………………………………………3 2.1 传输网络介绍………………………………………………………………….3 2.2 城域光纤传输网基本概念…………………………………………………… 2.3 城域网光纤传输网的基本特点……………………………………………… 2.4 光纤种类的介绍……………………………………………………………………………………………………………………………4 2.5 光缆的介绍…………………………………………………………………… 2.6 光传播