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摘 要
随着网络建设的逐步普及，高校校园网络的建设是高校向高水平研究性大学跨进的必然选择，高校校园网络系统是一个非常庞大而复杂的系统，它不仅为高校的发展、综合信息管理和办公自动化等一系列应用提供基本操作平台，而且能够使教育、教学、科研三位一体，提高教育教学质量。
建好高校校园网络有利于实现计算机辅助管理，而校园网网络建设中主要应用了网络技术中的重要分支局域网技术来建设与管理的，同时组建网络时应做到经济性、实用性、安全可靠性、可扩展性的原则。因此本文分析了对现有某城域网络的现状和急需解决的问题，研究了可营运的IP城域网关键技术，对目前主要的路由协议、用户绑定技术、城域网的传输技术、宽带接入技术作了简单的阐述、分析及比较，还对IP城域网的IPTLV、MPLSVPN业务实现做了简单分析和探讨。最后，结合现有城域网的现状，提出了城域网网络结构优化方案和路由设计、QOS、IPTV、MPLSVPN等业务实现。通过优化改造后，实现了由交换型城域网向路由型城域网的转变，引入BRS和SR，构架清晰的业务控制层，启用VPN、组播技术和QOS，支持多业务的开展。
关键词 计算机网络；城域网；网络优化；多业务支持
Abstract
With the gradual popularization of network construction, the construction of the Campus Network is the inevitable choice of colleges and universities to step into the high level research university, college campus network system is a very large and complex system, it is not only the development of colleges and universities, integrated information managementprovide basic operating platform, but also to enable education, teaching, research the Trinity, improve the quality of education and teaching and office automation applications.
Built on the Campus Network is conducive to computer-aided management, campus network construction main application of network technology an important branch of LAN technology to the construction and management, and the formation of the network should be done economical, practical, safe and reliable , the principle of scalability. This paper analyzes the status quo of existing in a metropolitan area network and urgent problem, operating IP MAN key technologies of the main routing protocols, the user is bound technology, MAN transmission technology, broadband access technologies are briefly elaborated analyze and compare of IP MAN IPTLV, the MPLSVPN of business do a simple analysis and discussion. Finally, the combination of the status quo of the existing MAN, the MAN network structure optimization program and routing design, QoS, IPTV, MPLSVPN business. Through the optimization of the transformation, by the exchange-type MAN changes to the route MAN, the introduction of BRS and SR clear framework for service control layer, VPN, multicast and QOS is enabled to support multi-business development.
Keywords computer network; MAN; network optimization; multi-service support
目 录
摘 要 1
Abstract 2
目 录 3
1引言 4
1.1 课题研究背景 5
1.2 城域网的现状与发展 5
2 城域网现状和需要解决的问题 6
2.1网络业务现状 8
2.2 现行网络结构 8
2.3网络存在的问题 9
2.4 网络覆盖问题 10
2.5网络管理方面存在的问题 11
3网络优化中应考虑的技术问题 12
3.1 MPLSVPN技术 13
3.2 IPTV技术 14
3.3宽带接入技术 14
3.4城域网接入网技术的比较和选择 14
3.5路由选择协议 15
3.6设备列表 15
4网优化方案设计与实现 17
4.1优化改造总体思路 17
4.2优化改造目标 18
4.3网结构优化改造方案 18
4.4城域骨干网优化 18
4.5 IP城域骨干网核心层 19
4.6宽带接入网优化 19
4.7宽带接入网的优化改造 19
4.8路由设计方案 20
4.9 QOS设计实现 21
4.10 QOS实现 22
4.11典型业务实现 22
4.12优化投资估算 23
4.13网络优化前后方案的比较 24
5 结束语 25
参考文献 26
致 谢 27
