摘 要
自21世纪以来，科学技术飞速发展，随着移动智能设备的普及和信息化教学的发展，校园网需求日益提高。网络与学校关系日益紧密的前提下，校园网的应用水平和学校的业务水平也随之挂钩，特别是高校要与时俱进，在教学和生活的各个方面为师生提供方便。在校园网的发展中，逐步形成了以有线校园网为主体、无线校园网为辅助的信息校园，各大高校建立校园网的速度也在不断加快。网络技术已经普遍进入了高校学子的日常生活，给予师生们的教学和生活极大的便利。目前，我国大部分学校已经实现了校园网全面覆盖。
随着新型网络技术的迅猛发展，网络信息技术、网络安全技术、数据备份技术、设备冗余技术以及加密等技术已逐步体现起来。随着校园网需求也就越来越大，所以需要规划建设一个与时俱进并且具备可用性高、冗余能力强的校园网网络，只有这样某大学的网络架构才会越来越安全，防止重要数据被非法泄密。在本文中，将结合当前领先的信息技术来实现某大学校园网络设计以及实现的需要。
本文对某大学校园网研究与设计。主要根据校园网的需求分析及总体设计、网络总体方案设计及其关键技术、设备的选择与配置、建设方案的实现与评估等几个方向的内容进行有关讨论，使并将IPsec VPN技术应用在校园网络的构建，通过VPN技术，可以实现校区互联、移动办公等多种服务，不仅节约成本，而且高效可靠。
关键词：三层架构 冗余 安全性 高效办公
ABSTRACT
Since the 21st century, science and technology have developed rapidly. With the popularization of mobile smart devices and the development of information-based teaching, the demand for campus networks has increased day by day. Under the premise of the increasingly close relationship between the network and the school, the application level of the campus network and the school's business level will also be linked. In particular, colleges and universities must keep pace with the times and provide convenience for teachers and students in all aspects of teaching and life. In the development of campus network, an information campus with wired campus network as the main body and wireless campus network as the auxiliary is gradually formed, and the speed of establishing campus networks in major universities is also accelerating. Network technology has generally entered the daily lives of college students, and has greatly facilitated the teaching and life of teachers and students. At present, most schools in our country have achieved full coverage of the campus network.
With the rapid development of new network technology, network information technology, network security technology, data backup technology, equipment redundancy technology and encryption technology have been gradually reflected. With the increasing demand of campus network, it is necessary to plan and build a campus network with high availability and strong redundancy. Only in this way can the network architecture of a university in Yantai become more and more secure and prevent important data from being leaked illegally. In this paper, we will combine the current leading information technology to achieve the design and implementation of a university campus network in Yantai.
In this paper, the architecture of a university campus network in Yantai is studied and designed. This paper mainly discusses the requirements analysis and overall design of campus network, the overall design of network and its key technologies, the selection and configuration of equipment, the implementation and evaluation of construction scheme, etc., so as to apply IPsec VPN Technology in the construction of campus network. Through VPN technology, campus interconnection, mobile office and other services can be realized, which not only saves costs, but also improves the quality of campus network, And it's efficient and reliable.
Key words : Three tier architecture Redundancy security Efficient office
