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高校校園網(wǎng)出口升級改造方案的研究與設(shè)計

發(fā)布時間:2019-06-22 09:01
【摘要】:校園網(wǎng)作為高校信息資源傳遞的重要媒介,是教學、科研和信息化管理的重要平臺。隨著校園網(wǎng)中用戶的增加和各種應用的不斷增多,用戶對網(wǎng)絡(luò)的、穩(wěn)定性和訪問速度提出了更高的要求。而校園網(wǎng)出口配置和拓撲卻直接影響網(wǎng)絡(luò)的穩(wěn)定性和用戶訪問公網(wǎng)的速度。因此,加強校園網(wǎng)出口的管理,對校園網(wǎng)出口進行升級改造已經(jīng)迫在眉睫。 本論文重點研究高校校園網(wǎng)出口系統(tǒng)構(gòu)建問題。論文分析了目前高校校園網(wǎng)出口系統(tǒng)普遍存在的問題,深入研究了解決這些問題的技術(shù)路線,并以河北某大學校園網(wǎng)出口升級改造為背景,給出了一個能較好地解決以上問題的設(shè)計方案。 論文重點研究了網(wǎng)絡(luò)出口的路由選擇、網(wǎng)絡(luò)地址轉(zhuǎn)換、域名解析、鏈路負載均衡、入侵防御、流量控制等系統(tǒng)的最新技術(shù),并提出了一個完整的設(shè)計。在路由選擇的設(shè)計中,采用策略路由、靜態(tài)路由和默認路由相結(jié)合的方法來解決數(shù)據(jù)包的選路問題;在網(wǎng)絡(luò)地址轉(zhuǎn)換的設(shè)計中,采用PAT技術(shù)在防火墻和負載均衡設(shè)備上分別進行IP地址轉(zhuǎn)換,解決了私有IP地址和教育網(wǎng)IP地址訪問公網(wǎng)的問題;在域名解析系統(tǒng)的設(shè)計中,采用智能DNS技術(shù),實現(xiàn)解析域名的智能化;在鏈路負載均衡的設(shè)計中,使用負載均衡設(shè)備,實現(xiàn)訪問不同的資源選擇不同的出口;在流量控制的設(shè)計中,通過對帶寬的管理,限制P2P下載,使http、email等常用服務(wù)得到保障,同時進行分時段管理。 本設(shè)計方案已經(jīng)在河北某大學網(wǎng)絡(luò)升級改造中實施,完成升級改造的河北某大學校園網(wǎng)出口性能得到了極大的提升,教育網(wǎng)和本地ISP的資源優(yōu)勢被充分利用,實現(xiàn)了流量的多鏈路負載均衡,提高了網(wǎng)絡(luò)的訪問速度,網(wǎng)絡(luò)安全性也進一步提高,為師生提供了一個良好的公網(wǎng)接入平臺。
[Abstract]:Campus network, as an important medium for the transmission of information resources in colleges and universities, is an important platform for teaching, scientific research and information management. With the increase of users and various applications in campus network, users put forward higher requirements for network stability and access speed. However, the exit configuration and topology of campus network directly affect the stability of the network and the speed of users accessing the public network. Therefore, it is urgent to strengthen the management of campus network export and upgrade the campus network export. This paper focuses on the construction of campus network export system in colleges and universities. This paper analyzes the common problems existing in the campus network export system of colleges and universities at present, deeply studies the technical route to solve these problems, and gives a design scheme which can solve the above problems according to the background of the upgrading and transformation of the campus network export of a certain university in Hebei Province. This paper focuses on the latest technologies of network exit routing, network address translation, domain name resolution, link load balancing, intrusion prevention, flow control and so on, and proposes a complete design. In the design of routing, policy routing, static routing and default routing are used to solve the problem of packet routing. In the design of network address translation, IP address translation is carried out on firewall and load balancing device by using PAT technology, which solves the problem of private IP address and educational network IP address accessing public network. In the design of domain name resolution system, intelligent DNS technology is used to realize the intelligence of domain name resolution; in the design of link load balancing, load balancing equipment is used to access different resources to select different exits; in the design of flow control, P2P download is limited through bandwidth management, so that http,email and other common services can be guaranteed and managed in different periods. This design scheme has been implemented in the network upgrading of a university in Hebei Province. The export performance of the campus network of a university in Hebei Province has been greatly improved. The resource advantages of the education network and the local ISP have been fully utilized, the multi-link load balance of traffic has been realized, the access speed of the network has been improved, and the network security has been further improved, which provides a good public network access platform for teachers and students.
【學位授予單位】:云南大學
【學位級別】:碩士
【學位授予年份】:2014
【分類號】:TP393.18

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