大型网吧局域网的组建

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摘要

众所周知,网吧凭借其舒适宽松的上网环境和高速便捷的上网服务,吸引了越来越多网民的光顾。网吧这种经营模式早已被人民大众所接受,各大城市的网吧得到了迅猛的发展,从最初的几台,到现在几十台,甚至上百台计算机的规模。大大小小的网吧已遍及全国,从大中城市到小县城。但随着网吧数量的增多,行业之间的竞争也越来越激烈,为了在激烈的竞争中立足,网吧的成本控制、运行性能、管理维护都成为极其重要的因素。因此,设计并实现一个性价比较高,方便管理的网吧网络方案显得尤为重要。网吧的需求分析、布线系统、设备选择、安全都要考虑在内。

运用的主要技术有:DHCP、NAT重载、VLAN划分、VPN隧道防火墙等,但实验在Packet Trace仿真器上做,顾及到局域网的安全性,同时在路由器R1上用exec-timeout 10 30命令。最后不同VLAN之间能互通;DHCP能自动分配地址;内网能访问外网的信息,但外网不能访问内网信息。

关键字DHCP/NAT重载技术/VLAN划分/VPN隧道防火墙/综合布线

Large Internet Local Area Network

ABSTRACT

As we all know, the Internet, with its relaxed and comfortable environment and

high-speed Internet access and convenient services to attract more and more users to patronize. This cafe business model has already been accepted by the masses, Internet cafes in major cities has been rapid development, from the initial few, and now dozens, or even hundreds of computers scale. Large and small cafes all over the country, from big cities to small town. But with the increase in the number of Internet cafes, the competition has become increasingly fierce between the industry, in order to gain a foothold in the fierce competition, cafes cost control, operational performance, management and maintenance have become an extremely important factor. Therefore, the design and implementation of a higher cost, easy management of Internet cafes network solutions is particularly important. Internet cafes needs analysis, wiring systems, equipment selection, safety should be taken into account.

The main use of technology: DHCP, NAT overloading, VLAN division, VPN tunnels firewall, but the experiment in the Packet Trace Emulator do, having regard to the LAN security while on the router R1 with exec-timeout 10 30 command. Finally able to communicate between different VLAN; DHCP can automatically assign addresses; within the network can access information outside the network, but the network can not be accessed outside the network information.

Keyword DHCP / NAT overloading Technical / VLAN division / VPN tunnels Firewall / Cabling

目录

摘要 (1)

ABSTRACT (2)

1 绪论 (4)

2 实验设计的内容 (5)

3.网络综合布线设计 (14)

4.网络管理维护....................................... . (15)

5.网吧机器常见故障 (16)

6.项目总结 (18)

致谢 (19)

参考文献 (20)

附录Ⅰ (21)

1 绪论

1.1 项目背景

随着国内Internet的普及和信息产业的深化,近几年光纤网络的发展尤为迅速。做为光纤接入重要的客户群体—网吧,每天要迎接大量的消费者。如今,从城市到乡镇,大大小小的网吧已遍及全国。随着网吧的增多,网吧行业竞争越来越激烈,网民对网吧的需求越来越高,而网吧的建设日益规模化,高标准化。

1.2 实验设计目的及要求

进一步理解和掌握网络组网的过程及方案设计,为今后从事相关工作打下基础;熟练掌握子网划分及路由协议的配置,熟练掌握路由器和交换机的基本配置。

要求能根据实际问题绘制拓扑结构图,拓扑结构图可以是树形、星形、网状形、环状形及混合形结构的之一,清晰的描述接口,进行路由器或交换机的代码配置实现,并且每个方案的需有以下几部分的内容:

1.需求特点描述;

2.设计原则;

3.解决方案设计,其中必须包含:

(1)设备选型;

(2)综合布线设计;

(3)拓扑图;

(4)IP地址规划;

(5)子网划分;

(6)路由协议的选择;

(7)路由器配置;

1.3 问题陈述

组建一个具有100个用户节点以上的大型网吧网络,其拓扑结构为树形,PC通过交换机连接起来,网络之间通过路由器或交换机连接起来,选择路由协议,配置路由协议,实现局域网之间能够互相连通,在网络内部联网的分布使用的是私有IP地址,划分子网,通过路由器连接到互联网,并且设计其安全性。

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