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自动交换光网络ASON的生存性机制是其核心和最重要的内容之一.目前对于ASON传送平面生存性机制研究较多,而对于控制平面的生存性机制研究较少.文章首先分析了ASON基本结构及其生存性策略,然后从控制平面与传送平面关系着手,深入研究了ASON控制平面的生存性机制,提出了一种逻辑独立的控制平面生存性机制解决方案. 相似文献
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自动交換光网络(Automatic Switched Optical Network(ASON))的生存性体现在两方面:传送平面生存性和控制平面生存性.文章着重讨论一种能够增强控制平面生存性的方法的设计与实现.通过改进ASON的控制平面设计来实现控制平面的异常信息能够准确,高速的传送给管理平面,以达到提高控制平面生存性的目的. 相似文献
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ASON组网中的保护恢复机制 总被引:2,自引:0,他引:2
介绍了自动交换光网络(ASON)生存性技术,分析了控制平面的可靠性、基于控制平面的业务生存性和基于传送平面的业务生存性机制,同时还针对ASON组网中业务生存性机制设计需要考虑的各种因素进行了阐述。 相似文献
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目前在光传送网的建设中开始出现ASON技术的应用.就ASON技术在组网中所涉及的保护恢复机制作了简单介绍,并讨论了ASON网络设计中应用业务生存性机制的考虑因素. 相似文献
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自动交换光网络(ASON)是一种能够自动完成网络连接的新型网络。控制面技术是其核心,一些协议(如GMPLS)正在逐步应用到ASON控制面中。网络生存性是指网络发生故障时提供连续业务的能力。基于GMPLS的网络生存性技术对于网络的运营具有重要的意义。本文介绍了光网络的生存性技术并结合GMPLS与ASON控制平面对光网络的生存性进行了较为深入的研究。 相似文献
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针对ASON中控制平面的引入,在介绍传统SDH保护的基础上,重点分析了ASON的业务生存性机制,总结出实际中保护与恢复机制的相结合的商用方式. 相似文献
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Yejun Liu Lei Guo Bo Gong Rui Ma Xiaoxue Gong Lincong Zhang Jiangzi Yang 《Optical Fiber Technology》2012,18(2):68-80
Fiber-Wireless (FiWi) broadband access network is a promising “last mile” access technology, because it integrates wireless and optical access technologies in terms of their respective merits, such as high capacity and stable transmission from optical access technology, and easy deployment and flexibility from wireless access technology. Since FiWi is expected to carry a large amount of traffic, numerous traffic flows may be interrupted by the failure of network components. Thus, survivability in FiWi is a key issue aiming at reliable and robust service. However, the redundant deployment of backup resource required for survivability usually causes huge energy consumption, which aggravates the global warming and accelerates the incoming of energy crisis. Thus, the energy-saving issue should be considered when it comes to survivability design. In this paper, we focus on the green survivability in FiWi, which is an innovative concept and remains untouched in the previous works to our best knowledge. We first review and discuss some challenging issues about survivability and energy-saving in FiWi, and then we propose some instructive solutions for its green survivability design. Therefore, our work in this paper will provide the technical references and research motivations for the energy-efficient and survivable FiWi development in the future. 相似文献
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针对通信网网络优化设计提出了一种在网络抗毁性指标和网络最小费用之间进行均衡、折衷的优化设计方法。分析了通信网络的特点和设计要素,在此基础上提出了将通信网络进行模型化的方法,根据模型化后的图求出最小费用的连通网络结构,在尽量减少费用的前提下进行抗毁设计的修改。通信网络优化设计的最终设计目标是具有一定抗毁性指标且费用最少的网络拓扑结构。 相似文献
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对宽带通信网进行生存性设计十分重要。网的生存性与包括路由在内的诸多因素有关,本文分析分集路由的分割因子对网生存性和费用的影响,发现均匀分割因子对网的生存性和费用的影响十分独特,从而为网的生存性设计提供了有益的参考。 相似文献
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In this paper we address the survivability issue of a mobile cyber physical system (MCPS) comprising sensor-carried human actors, vehicles, or robots assembled together for executing a specific mission in battlefield or emergency response situations. We develop a mathematical model to assess the survivability property of a MCPS subject to energy exhaustion and security failure. Our model-based analysis reveals the optimal design setting for invoking intrusion detection to best balance energy conservation versus intrusion tolerance for achieving high survivability. We test the effectiveness of our approach with a dynamic voting-based intrusion detection technique leveraging sensing and ranging capabilities of mobile nodes in the MCPS and demonstrate its validity with simulation validation. 相似文献
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提出了基于管理技术的ATM网络抗毁性组织结构概念,指出了在网络规划设计与维护管理阶段进行层次化技术处理的重要性。ATM网络抗毁性组织结构要求在网络规划设计阶段、运用各种规划算法和仿真技术进行抗毁性设计与验证;在网络管理维护阶段,从网络各个层次,运用各种管理算法或机制维护网络抗毁性。在网络实际运行过程当中,该组织结构强调联合应用网络各层次上的抗毁性管理技术,充分发挥各个层次上的抗毁性,以提高整个网络抗毁性能。 相似文献
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Framework for network survivability performance 总被引:9,自引:0,他引:9
The article is based on the results of ANSI Technical Subcommittee T1A1 activities in the area of a general framework for telecommunication network survivability performance. The issues of users' expectations and requirements, outage categorization, and a framework for analysis of survivability techniques are discussed. Based on the survivability framework, models for network survivability assessment and analysis are considered, and performance measures are described. Examples illustrate the application of this framework in network design and planning 相似文献
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In this article, we present a study of the design of secure and survivable wireless sensor networks (WSN) that has yet to be addressed in the literature. Our goal is to develop a framework that provides the security and survivability features that are crucial to applications in a WSN, because WSNs are vulnerable to physical and network-based security attacks, accidents, and failures. To achieve such a goal, we first examine the security and survivability requirements. We then propose a security and survivability architecture in a WSN with heterogeneous sensor nodes. To understand the interactions between survivability and security, we also design and analyze a key management scheme. The results of the experiment show that a good design can improve both security and survivability of a WSN; however, in some situations, there is a trade off between security and survivability. 相似文献
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下一代网络生存性的总体考虑 总被引:7,自引:0,他引:7
网络的生存性民为网络、特别是下一代网络设计中需要关注的重要内容,随着网络规模和容量的日益扩大,网络的生存性显得越来越重苛。本文介绍网络生存性的概念与意义,讲述网络保护和恢复的总体考虑,并以SDH传送网为例简要介绍电层的保护、恢复方法和设计考虑。最后讨论网络的多层生存性问题。 相似文献