网络仿真 Opnet—基于校园网的改造分析
摘 要
近年来,随着网络技术的发展,人们对网络的需求在原有的基础上有很大的变化。未来网络将能够提供更为丰富的如:语音、图像以及多媒体等业务,可以满足不同用户的需求。这必然给网络原有设备带来冲击,需要对其加以改造来适应新业务的需求。本文的研究是以海南大学校园网为背景,以网络仿真软件Opnet作为技术支持,对校园网内部主交换机进行仿真,分析原有主交换机是否可以满足新网络的需求,若满足则分析说明仿真结果,不满足则提出改进方案。
本文主要内容如下:
(1)介绍了网络仿真技术的背景以及仿真软件Opnet的一般原理;
(2)根据实际情况利用Opnet网络仿真软件对海南大学原有校园网络进行仿真。
(3)根据学校实际需求对原有网络进行改造,并测试原有主交换机是否满改进网络的要求。
(4)分析结果并提出解决方案。
关键词:网络仿真,Opnet,交换机,网络改造
Abstract
In recent years, with the development of the network technology, the requirements for the network from the people have changed so much. The network will be able to provide more functions such as Pronunciation, image, multimedia and so on, which will meet the requirement of the different users. It will bring the old network equipment much impact inevitably. So it needs to be renewed the old network in order to meet the new functions’ requirement. The research of this paper takes the network of the Hainan university as a background, takes the network simulation software ----- Opnet as a technical support, simulates the network interior host switchboard and analyzes the original host switchboard whether meets the new networks’ conditions or not. If do then analyzes and shows the result of the simulation, or give the way to better it.
The main context of this paper as the following:
(1) Introduces the background of the network simulation technology and the general principle of the Opnet.
(2)Simulates the original network of the Hainan university by use of the Opnet according to the actuality.
(3) Improves the original network according to the school actual requirements, and test the original host switchboard whether meet the improvement of the network or not.
(4) Analyzes the result and proposes the solution.
Key Words : Network simulation,Opnet,Switchboard,Network Transformation.
目 录
1 背景 (1)
2 技术支持 (1)
2.1 理论技术 (1)
2.2 工具及应用平台 (2)
3研究对象的选择 (2)
3.1选择背景 (2)
3.2设备的选择 (3)
3.3交换机说明 (3)
3.3.1适用范围 (3)
3.3.2产品特性 (4)
3.3.3产品描述 (5)
4原有网络分析 (6)
4.1原有网络建模 (6)
4.1.1校园网连接情况 (6)
4.1.2具体说明 (6)
4.1.3拓扑示意图 (8)
4.2原有网络仿真 (8)
4.2.1 Opnet网络仿真流程 (8)
4.2.2 Opnet网络模型建立 (9)
4.2.3业务配置 (10)
4.2.4运行仿真 (14)
4.3仿真结果查询与分析 (18)
4.3.1收集统计量 (18)
4.3.2仿真结果说明与分析 (18)
4.3.3仿真结果总结 (23)
5改进后网络分析 (24)
5.1改进后网络建模 (24)
5.1.1改进后校园网连接情况 (24)
5.1.2具体说明 (25)
5.1.3拓扑示意图 (26)
5.2原有网络仿真 (27)
5.2.1 Opnet网络模型建立 (27)
5.2.2业务配置 (29)
5.2.3运行仿真 (29)
5.3仿真结果查询与分析 (31)
5.3.1收集统计量 (31)
5.3.2仿真结果说明与分析 (32)
5.3.3仿真结果总结 (40)
6附加方案 (41)
6.1改造方案说明 (41)
6.2拓扑图 (41)
6.3配置业务后仿真 (42)
6.3.1仿真结果 (42)
6.3.2分析原因 (42)
6.4总结 (43)
致 谢 (44)
参考文献 (45)

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