原文
题目：
Campus Network planning and Construction
At present, China\'s rapid development of the cause of the campus network, to early 2003, almost all colleges have set up their own campus network, and carry out a variety of its services and applications.Campus Network build a rich learning resources to enhance the efficiency of education.But as the number of users increased dramatically increased and the pattern of opera-tions, campus network security is increasingly conspicuous, and the ever threat to the healthy development of the campus network, as an education development of the information industry should not be neglected problem.This paper focuses on the campus network design and the proce of building the campus network established the goal of building, campus network technology programme design, information resources construction, application software development, network management and security, the five key iues.
\" The safe management of the campus net and the maintenance summary:The campus network is the infrastructure of importance of school, taking the school teaching, research, managing and outward communicate many roles of etc..The safe condition of the campus net affects the teaching activity of the school directly.Set up in the network of initial stage, the safe problem may still be not outstanding, but along with applied thorough, various data of the cam-pus net would nasty play increment, the safe problem beginning of various each kind perplexs us.The Internet flies to develop soon, to the campus net-work the teachers and the students\' life and studies have already produced the profound influence, the network have already not have no place in our life at.But at enjoy the convenience that high technology bring at the same time, we need to be awake of know, the safe problem of network also become the network application more and more increasingly and seriously huge bar, the situation that the campus network safety hazes already arrived and must unify the management and resolve thoroughly, only good resolve the safe problem of network, the application of the campus network then can be healthy, high speed of development.We should consider the comprehensive usage fire wall and encrypt several measures, such as technique and the anti-virus soft-ware...etc.completely, work in coordination, strengthening the management, looking for the balance point of insure the network safety and the network effi-ciency from it, the safety of the comprehensive exaltation campus network, thus build up rise a set of real in keeping with safe system of the calculator network of the school.Keyword:The fire wall, IDS, loophole scan, VLAN( VPN), interview row form, area etc..\"
The time today\'s knowledge-based economy and information technology have the development and popularization of Internet in the world have decided the time the network will become the main tool for information.With the de-velopment of computer network technology, network has become an important platform for the exchange of information.
21st century the size of the campus network and application level are re-flected in schools and science teaching and learning environment an important component of the force, so we should make use of existing campus conditions, design a secure, unified campus network.
Internet-based e-learning with time-sensitive, shared, interactive and many of the characteristics of the individual, so it has a traditional teaching model of unmatched advantages.It created a new teaching model, breaking the tradi-tional teaching model at the time and space limitations, the use of advanced teaching methods and teaching methods, greatly improve the teaching effi-ciency and teaching effectivene, teaching and learning activities to enable a new level .Do a good job in the design of the campus network, are among the schools, both internal and external communication between the key and con-venient.
This thesis focuses on the campus network design and construction proce to establish the goal of building the campus network, campus network, network design principles and requirements of network technology selection, selection of network equipment, as well as the formation of the campus net-work for the most important integrated wiring and other key iues, to network security iues are discued, and give a specific network topology diagram.
Large Campus Network Design Businees operating large campus networks are increasingly looking for in-frastructure upgrades to: (1) Handle high bandwidth applications such as voice, video, and IP multicast Improve backbone capacity for shared Ethernet or FDDI campus backbones (2) Support applications based on Novell IPX, DECnet, AppleTalk, and SNA (3) Offer high availability, performance, & manageability for your company\'s intranet
Design suggestions
Use Layer 2, Layer 3, or ATM backbone solutions to expand your large cam-pus network.In typical designs, the buildings or different parts of the campus connect together acro a high performance, switched backbone.Network redundancy and high availability is provided at each layer.A high capacity, centralized server farm provides resources to the campus, and when com-
bined with Cisco IOS, network management strategies support QoS, security, troubleshooting, and other common management features from end to end.
Medium Campus Network Design A medium campus consists of one large building or several buildings.Net-working for a medium campus is designed for high availability, performance, and manageability.This is also called a \'collapsed backbone\' design for me-dium campus networks.Additional requirements of these designs typically in-clude:
(1) High performance and availability for bandwidth applications such as voice, video, and IP multicast
(2) Shared Ethernet or FDDI building backbone which is running out of capac-ity
(3) Support for applications based on Novell IPX, DECnet, AppleTalk, and SNA Based on the Cisco AVVID architecture, these intelligent network plat-forms and products provide the basis for a complete network solution.
Small campus networks Design In most cases, network redundancy is not the top priority, but cost effective-ne is.Additional requirements of these designs typically include:
(1) High performance and availability for bandwidth applications such as voice, video, and IP multicast
(2) Shared Ethernet or FDDI building backbone which is running out of capac-ity
(3) Support for applications based on Novell IPX, DECnet, AppleTalk, and SNA
A campus network is a building or group of buildings all connected into one enterprise network that consists of many local-area networks (LANs).A cam-pus is generally a portion of a company (or the whole company) that is con-strained to a fixed geographic area.
The distinct characteristic of a campus environment is that the company that owns the campus network usually owns the physical wires deployed in the campus.The campus network topology is primarily LAN technology connect-ing all the end systems within the building.Campus networks generally use LAN technologies, such as Ethernet, Token Ring, Fiber Distributed Data In-terface (FDDI), Fast Ethernet, Gigabit Ethernet, and Asynchronous Transfer Mode (ATM).The Enterprise Composite Network Model.As shown in the fol-low figure.
译文
题目：
校园网的规划与构建
目前，我国校园网事业飞速发展，至2003年初，几乎所有的大中专院校都建立了自己的校园网，并在其上开展了多种服务和应用。校园网的建设丰富了学习资源、提高了教育效率。但随着用户数的急剧增加和业务样式的增多，校园网的安全问题也日益突出，无时无刻不在威胁校园网络的健康发展，成为教育信息化建设中不容忽视的问题。本文着重论述了校园网设计与建设过程中确立建设校园网的目标，校园网的技术方案设计，信息资源建设，应用软件的开发，网络管理与安全五个关键问题。校园网络作为学校重要的基础设施，担当着学校教学、科研、管理和对外交流等许多角色。
校园网安全状况直接影响着学校的教学活动。在网络建成的初期，安全问题可能还不突出，但随着应用的深入，校园网上的各种数据会急剧增加，各种各样的安全问题开始困扰我们。互联网络的飞速发展，对校园网络中师生的生活和学习已经产生了深远的影响，网络在我们的生活中已经无处不在。但在享受高科技带来的便捷同时，我们需要清醒的认识到，网络安全问题的日益严重也越来越成为网络应用的巨大阻碍，校园网络安全已经到了必须要统一管理和彻底解决的地步，只有很好的解决了网络安全问题，校园网络的应用才能健康、高速的发展。我们应当全面考虑综合运用防火墙、加密技术、防毒软件等多项措施，互相配合，加强管理，从中寻找确保网络安全与网络效率的平衡点，综合提高校园网络的安全性，从而建立起一套真正适合学校计算机网络的安全体系。
当今时代的知识经济的产生和信息技术的发展及Internet的全球普及化都决定了网络将成为信息时代的主要工具。随着计算机网络技术的发展，网络已成为人们交流信息的重要平台。基于因特网的网上教学具有时效性、共享性、交互性和个别化等诸多特点，因此它有着传统教学模式无法比拟的优点。它打造了一种全新的教学模式，打破了传统教学模式在时间、空间上的局限，采用先进的教学手段和教学方法，大大提高了教学效率和教学效果，使教学活动上了一个新台阶。做好校园网络设计工作，是学校内部之间，校内和校外之间便捷沟通的关键。
21世纪校园网络的规模和应用水平将是体现学校教学环境和科研力量的重要组成部分，因此我们要利用校园内现有的条件，设计一个安全、统一的校园网络。
本论文着重论述了校园网设计与建设过程中确立建设校园网的目标，校园网的组网方案设计原则和所需的网络技术选型,网络设备选择以及对于组建校园网
最重要的综合布线等关键问题,对网络安全问题也进行了论述，并给出具体的网络拓扑结构示意图。
大型校园网络设计：
商务运作的大型校园网络在快速提升中寻求结构化的更新
1．能处理高带宽的网络应用，例如语音，视频，IP多播，提升共享的以太网或光纤的校园网骨干的容量
2．能支持基于 Novell IPX的NOVELL网络), DECnet协议的网络, AppleTalk协议的网络, 和IBM公司的SNA网络
3．能为公司网络提供更高的效率，性能和可管理性
使用2层或者3层的ATM骨干方案来拓宽你庞大的校园网。在典型的设计中，校园内的不同建筑或部门，通过高性能交换骨干连接在一起。网络的冗余和高效在网络的每个层面得到体现。一个高容量的集中的数据中心，当它整合了思科的操作系统，网络管理战略，包括支持服务质量，安全，故障排除和其他端到端的一般性解决方案，就能为校园提供各种资源
中型网络设计
一个中型的校园网络由一个大型的部分或几个部分组成。中型校园网被设计成一个高效的，高性能的，可管理的网络。对中型校园网络来说，这也被称为“折叠的骨干”设计。包括这些典型设计的附加需求：
1．为语音，视频，多播这些应用程序设计的高性能高效率的带宽应用 2．能够运行超出容量的共享以太网和光纤的网络骨干。
3．能够运行在 Novell IPX的NOVELL网络), DECnet协议的网络, AppleTalk协议的网络, 和IBM公司的支持思科的视讯及数据整合架构SNA网络，这些整合的网络平台和产品，提供了一个完整的网络解决方案的基础
小校园网设计
在大多数情况下，网络冗余并不是最优先考虑，但成本效益的。所需经费增加这些设计通常包括：
1． 高性能，高可用的带宽应用，如语音，视频和IP组播
2． 共享以太网或光纤分布式数据介面建设骨干这是耗尽能力
3．支持为基础的应用Novell公司的IPX ， DECnet ，的AppleTalk ，和国民核算体系
校园网是一个建筑物或建筑群全部连接成一个企业的网络，包括许多地方网络（ LANs ） 。校园通常是一家公司的部分（或整个公司）这是一个固定的限制，以地理区域。
的鲜明特征的校园环境，该公司拥有通常拥有校园网的物理线路部署在校园内。校园网拓扑结构，主要是局域网技术连接所有终端系统的建设。校园网一般都使
用网络技术，如以太网，令牌环，光纤分布式数据介面（光纤分布式数据介面） ，快速以太网，千兆以太网和异步传输模式（ ATM ） 。企业综合网络模型。显示在后续的数字。
