共查询到17条相似文献,搜索用时 78 毫秒
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双向转发检测BFD(Bidirectional Forwarding Detection)是一种快速检测IP网络链路和通道故障的标准协议。在实际部署BFD应用时,要注意一些关键参数的配置。本文对BFD三个重要参数定时器、会话标识、会话等待恢复时间的实现机制进行研究,同时给出这三个参数配置注意事项。 相似文献
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Optical burst switching (OBS), which takes advantage of both high capacity of optical fiber and sophisticated control of electronics, has been considered as a promising paradigm for the modern Internet. In this paper, the recovery procedures for IP over OBS/WDM multilayer network are addressed, which focus on the failure detection and failure localization. Bidirectional forwarding detection (BFD) mechanism which provides low‐overhead, short‐duration detection of failures in the path between adjacent forwarding engines, including the interfaces, data link(s) is introduced for the failure detection and localization in the IP over OBS/WDM multilayer network, especially at the OBS/WDM layer. The unique feature of OBS and the easy‐to‐implement merit of BFD make it feasible for BFD adopted at OBS/WDM layer. Besides, BFD is a highly cost effective method when compared with traditional methods such as detecting the Loss of Light of each wavelength. Not only the implementation details of BFD‐based failure detection for the OBS/WDM layer are demonstrated in this paper, but also how the BFD localizes failures such as fiber failure, link failure and node failure. Moreover, extensive simulations have been done at different scenarios such as single failure and multiple failures. And the numerical results concerning the performance of BFD‐based failure detection and localization in terms of failure detection and localization time and BDP lost rate verified the proposed solution. Copyright © 2011 John Wiley & Sons, Ltd. 相似文献
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针对DoS攻击的IP跟踪技术研究 总被引:1,自引:0,他引:1
IP追踪技术是检测和防御分布式拒绝服务攻击的重要手段,它的主要目的是想办法追踪到攻击数据包的源地址,弥补IP协议的不足。成熟的IP追踪技术可以有效抑制DDoS攻击的发生,对网络故障的诊断和减少数据包欺骗将有很大的帮助。文中对当前现有的IP追踪和攻击源定位技术作了系统的分类,分别对它们作了全面的分析并比较了相互之间的异同及优缺点。同时,针对当前的IP追踪和攻击源定位技术现状,讨论了其未来的发展趋势。 相似文献
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IP技术与IP业务在国际上大行其道,强烈地冲击着传统电信网,同时改变着电信市场的竞争格局。IP技术将成为下一代电信网的核心技术之一,它对中国电信运营商是一种机遇,加快向IP技术升级,将在未来国际竞争中取得主动权。然而,从美国电信市场竞争格局的变化中,我们强烈感受到外国运营商卷入的压力。因此,IP技术将成为中国电信业国际竞争力中十分重要的因素。 相似文献
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IP地址分配技术是机动通信网络管理系统研究的重要内容之一,对保障机动通信网络的正常运行起到了重要的作用。针对机动通信网络的组成与特性,提出了一种IP地址分配方案,并详细阐述了该方案的设计原则、编址方法和分配流程,在此基础上实现了全网通信设备IP地址的自动分配与配置。实际使用效果表明,该分配方法能够保证IP地址分配的正确性,缩短了网络开通的时间,降低了网络开通的难度。 相似文献
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随着移动网络从2G向3G的迈进,移动网络IP化的进程日益加速,移动软交换网络的建设拉开了移动核心网络向IP化演进的序幕,而移动接入网(RAN)侧的IP化也逐渐成为电信运营商关注的热点。电信级以太网技术作为承载IPRAN的技术之一越来越受到人们的重视。本文从电信级以太网技术分类和技术特点分析出发,基于cdma2000基站的承载需求,对电信级以太网在基站IP化承载领域的解决方案进行了分析和探讨。 相似文献