【作者】 孙伟；

【导师】 王文东；

【作者基本信息】 北京邮电大学 ， 计算机科学与技术， 2010， 硕士

【摘要】 随着网络应用的发展,当前IP网络架构的弊端日益显现,对新型网络体系架构的研究也正在展开。网络自治化是其中的一个重要的研究方向。所谓自治化,指的是在网络体系结构的设计中加入自治化的网络功能实体,以便实现自感知,自管理,自配置,自优化等自治特性。随着互联网业务的不断丰富,业务感知成为自感知的一项重要内容。在自治化网络中引入业务感知技术,可使网络感知不同业务的特性和需求,从而使自治网络应用其自配置和自优化特性更好的保证业务的服务质量。本论文依托于国家863项目“广义上下文感知的自治网络体系结构模型研究”(CAANM),致力于自治化网络体系原型中自治QoS系统的设计与实现。本文参照区分服务模型,以自治为目的,在Linux系统上设计并实现了基于业务感知的自治QoS系统。该系统通过业务感知,业务反馈,自治标记器以及业务终端认证等功能实现了自治化网络的自感知,自配置,自管理,自优化等特性,从而能够更好保障业务的服务质量。本文首先介绍了基于业务感知的自治QoS系统中用到的相关技术,包括Linux流量控制框架,深度包检测,IP队列,IPv6对QoS的支持及其扩展头技术等。接着介绍了系统的总体结构和主要业务流程,然后描述了系统的设计与实现,包括总体架构,各模块的详细设计与实现等。最后介绍了系统在实际网络上测试的情况。论文最后对全文进行了总结,分析了存在的不足和进一步工作,并总结了本人在硕士研究生期间的工作和成果。更多还原

【Abstract】 With the development of network applications, IP network’s drawbacks are becoming obvious. Some researches on the new network architecture are carried out gradually. Autonomic network is an import direction of those stud-ies. Autonomic network is a new network architecture that has some autonomic entities to implement autonomic attributes like self-aware,self-managment,self-configuration and self-optimization,etc. As kinds of services are introduced into the network, service-aware can be an important aspect of self-aware. Au-tonomic network, with service-aware, can percept the characteristic and re-quirement of the services, so that to provide better quality of service.As a sub-project of’Context Aware based Autonomic Network Model and architecture research’, this thesis researches the design and implementa-tion of autonomic QoS system in autonomic network. This thesis refers to the DiffServ module, and for the purpose of implementing autonomic attributes, design and implement a service-aware autonomic QoS system, which imple-ment autonomic attributes like self-aware,self-configuration,self-optimization, and can provide better QoS.In this thesis, the related background technologies are firstly described, including Linux traffic control framework, deep packet inspection, IP queue, IPv6 and its extension header, and then the architecture of the system is intro-duced, after that the system design and implementation details are introduced. Then it makes a brief introduction of the system testing, including the testbed, testing scenario and the testing result.At last the major work of this thesis is summarized and the system insuf-ficiencies and future improvements are pointed out.更多还原