【作者】 张杰；

【导师】 徐萍；

【作者基本信息】 东华大学 ， 计算机应用技术， 2008， 硕士

【摘要】 随着计算机和通信技术的发展,计算机网络已经逐渐成为单位,个人工作以及生活中不可缺少的一部分。由于计算机网络的应用越来越广,使得计算机网络规模更加的庞大、结构更加复杂、支持的用户更多,人们逐渐意识到网络管理的重要性。因此有效的网络管理已经成为评价网络的一个重要指标。网络管理系统是一个软硬件结合以软件为主的分布式网络应用系统,其目的是管理网络,使网络高效正常运行。网络管理的实质是为了压缩网络故障,让网络上承载的业务系统和应用系统顺利运行。网络管理是计算机网络发展的必然产物,它随着计算机网络的发展而发展。网络管理的质量会直接影响网络的运行质量,因此网络管理技术的发展对计算机网络的发展也能起到很关键的作用。一个好的网络管理系统可以对各种网络设备及其软件资源进行有效的监视、解释和控制,达到网络可靠、安全和高效运行的目的。在长期的网络运行和管理实践中形成了一整套的满足上述要求的网络管理工业标准。SNMP(Simple Network Management Protocol)作为一种网络管理协议,是被广泛接受并投入使用的工业标准。它的目标是保证网络管理信息在任意支持SNMP协议管理实体和被管设备间传送,便于网络管理系统在网络上的任何节点检索信息,获得网络指标参数。SNMP是TCP/IP协议簇中的一个应用层协议,它采用了Client/Server模型的形式:管理站(Manager)/代理(Agent)模型。对网络的管理和维护是通过管理站和代理间的交互完成的。本文论述了网络管理发展历史,介绍了国内外几种网络管理系统的特点,分析网络管理系统的体系结构,网络管理的基本模型,研究SNMP协议的原理与实现等理论知识。在此基础上,本文为网络管理系统的发展做了以下研究与实现:设计实现了网络管理系统中的一个子系统－流量监控子系统,通过对网络核心交换机的实时流量监测,掌握网络整体运作情况;为了解决网络拓扑发现过程中,网络运行过程中,一些设备尤其是国有设备的私有MIB数据采集不到这个问题,在网络管理系统上配置TELNET工具模块,可以使用这个工具来获得所需的MIB信息;随着网络管理软件的发展趋势,分析面向业务的网络管理系统的可行性和必然性,对面向业务的网络管理系统进行整体构架设计和运维子系统的详细设计。更多还原

【Abstract】 With the development of computer and communication technology, computer network has already become an indispensable part of life gradually. Along with the development of Internet technology, enlargement of the Internet scale and complicated structure of Internet, people realize the importance of network management. And the effective network management has already become an important measure of the network.Network management system is a distributed network application system which includes software and hardware, software-based; the object of it is to manage the network and make the network more efficiently. Network management, in essence, is the purpose of reducing network faults and making the operation systems and application systems run smoothly on it. Network management is a necessity in the development of computer network’s evolution, which is developing along with the computer network. The development of network management technology is pivotal to computer network’s evolution, for the reason that a network’s running quality will be effected by whether the network management’s quality is good or not.A good NMS can conduct effective surveillance, interpretation and control on all kinds of network equipments and software resources, to the purpose of making network reliable, safe and efficient running. In the long-term of network operation and management practice, a set of requirements to meet this industry-standard of network management has been created. SNMP (Simple Network Management Protocol) as a network management protocol is the industry standard which is widely accepted and put into use. Its goal is to ensure that the network management information is transmitted between any management entities supporting SNMP protocol and the controlled equipments, ease NMS to retrieve network parameters in any node on the network. SNMP is an application layer protocol of the TCP/IP protocol clusters, and it adopts a Client/Server model: Management/Agent model. Through the interaction between the managements and agents, it completes the network management and maintenance.This article discusses the history of network management; introduces several NMS products’s characteristics both at home and abroad; analyses NMS architecture, the basic model, researches the principles and implementation of SNMP etc. On this basis, it does the following studies and implementation to the development of NMS: Design and Implementation of a subsystem in the NMS - flow control subsystem. Through the real-time traffic monitoring of the core switch, we can grasp the overall operation of the network; in the topology discovery and the operation of the network process, some equipments, particularly the state-owned equipments, their private MIB data can’t be acquired. To solve the issue, we config TELNET tool in the NMS, and you can use this tool to obtain the necessary MIB information. With the development trends of network management system, the article analyses the feasibility and inevitability of the business-oriented NMS, and does the overall framework’s design and operational subsystems’s detail design.更多还原