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近年来随着互联网用户数量的高速增长,网络多媒体应用的普及带来了IP网络带宽的急剧消耗,组播技术以其独特的优越性受到运营商的关注.然而,目前组播技术的使用仍然局限在少数小型网络中,组播部署缺少系统化、整体化的解决方案.本文介绍了一些关键的组播技术,在此基础上针对大型IP网络中的组播部署方案进行探讨,提出组播端到端的解决方案,并通过实验证明了该部署方案的可行性. 相似文献
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研究TCERNET组播网络的设计与实现方法,CERNET采用了PIM-SM/MBGP/MSDP组播路由协议和Anycast RPT工作模式,并配置了组播安全策略。还给出了相关的网络配置和运行经验。介绍了CERNET上基于组播网络的视频会议服务应用。 相似文献
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Prashant Rajvaidya Krishna N. Ramachandran Kevin C. Almeroth 《Journal of Network and Systems Management》2004,12(3):297-326
A lack of mechanisms to monitor and manage multicast networks has adversely affected progress in several areas critical for successful deployment. One such area involves discovering and solving multicast security vulnerabilities. Although a number of vulnerabilities exist, the most troubling are a set of easily exploited Denial-of-Service (DoS) attacks. The main reason for this concern is that the one-to-many nature of multicast can significantly magnify the effects of these attacks. Among the possible multicast DoS attacks, those that target the the Multicast Source Discovery Protocol (MSDP) can be most damaging. MSDP vulnerabilities are unusually easy to exploit and can lead to infrastructure-wide damage. In this paper, our goal is to develop a security framework that protects against DoS attacks through detection and then deflection. In developing our framework, we first examine the vulnerability of multicast protocols, to DoS attacks. We use data collected with our global monitoring infrastructure, Mantra, to analyze the nature and effects of attacks that have already occurred. We then create additional, more virulent strains. Finally, we propose a family of solutions to detect and deflect the effects of each attack. Our techniques are evaluated by simulating their effectiveness against both real and simulated workloads. 相似文献
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高性能路由器域间组播的实现技术研究 总被引:1,自引:0,他引:1
广域组播技术是在Internet上广泛开展新型IP组播业务的关键之一,成为近年来人们研究的热点。本文设计高性能组播路由器的实现结构,分析一种广域组播协议体系结构,并通过高性能路由器组播系统的PIM—SM测试。展望域间组播技术的发展前景。 相似文献
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"中国高速互联研究试验网NSFCNET"是我国第一个全网支持非隧道组播协议的下一代高速互联网试验床.文章根据组播网络的基本原理,结合NSFCNET的具体特点,对NSFCNET组播网络的结构进行了设计.全网采用PIM-SM和MBGP路由协议,选取清华大学路由器作为全网的汇聚点RP.NSFCNET域与CERNET域之间通过MSDP协议交换本域的活动源信息.文章还详细介绍了NSFCNET组播网络调试步骤和使用的工具.该文对于其他非隧道组播网络的设计、配置和调试具有参考价值. 相似文献
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IP多播技术及其应用 总被引:3,自引:0,他引:3
本简单地阐述了IP网络上多播(Multicast)技术的概念、特点与原理,介绍了在公用IP网络中部署PIM-SM组播业务的实现方法、其结构体系和路由组织,分析所涉及的相关协议,并介绍了基于IP组播技术的应用解决方案和近年来组播技术的发展。 相似文献
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