【作者】 周敏；

【导师】 游志胜；

【作者基本信息】 四川大学 ， 计算机应用技术， 2004， 硕士

【摘要】 本论文结合所在单位承担的军航ATC项目,以网络监控子系统为对象,描述网络监控系统的设计和实现。随着计算机网络的发展和普及,计算机网络的规模越来越大,结构也越来越复杂。在这种情况下,一个完善的网络管理系统是计算机网络能够可靠而稳定运行的保证。军航ATC(Air Traffic Control)系统是一个长期不间断运行的专用、实时使命重大系统,系统要求具有高可靠性、安全性和稳定性,网络监控系统的设计和实现为实现上述目标提供了有力的保障。作为网络监控系统组的成员,笔者参与了网络监控系统的整体设计,并主要承担了服务器代理的设计和编码工作。根据实际工作,本文首先介绍网络管理的基本知识,其中包括:管理模式(集中式和分布式)、广泛应用的SNMP管理模型、软件代理技术。建于这些理论基础之上,本论文根据军航ATC系统具体的、特殊的网络监控需求和网络的系统结构,结合集中式和分布式的优点以及代理的特点,创新地提出了基于代理的网络监控实现技术。该监控方法很好地解决了军航ATC系统中设备多样,监控要求多样等问题,为系统提供了一个方便的、可靠的、安全的监控软件。本论文详细分析了整个网络监控系统的架构及其各部分的功能,该监控系统提供一个带界面的技术监控席负责对设备的集中管理,各个设备上又驻留了监控代理,负责收集监控信息并报告给技术监控席,接收来自技术监控席的命令并作相应处理。文章最后给出了笔者负责编写的服务器代理的实现技术,采用SART方法对服务器代理的整体框架和各组成模块进行了详细描述,并对编码过程中的一些创新技术进行了分析,如:将UNIX系统中软件中断信号、UNIX进程的特性和进程间通信有机的结合起来,解决了代理的启动/关闭进程、探测进程状态等实际监控难<WP=3>题;利用UNIX系统的伪文件系统PROCFS进行资源探测,解决了系统中不能用SNMP进行探测的实际监控难题;采用BER编码规范对SNMP报文编码和解码,解决了系统中利用SNMP进行跨平台监控的难题。上述研究结果已经成功的运用于军航空中交通管制,该系统以高标准通过了用户验收,并得到了国内空管专家的高度评价。更多还原

【Abstract】 The paper describes the design and implementation about network monitoring system, which is based on Army ATC system. With the development and popularization of computer network, the scope of computer network is more and more great, and the structure is also more and more complicated. Under this kind of circumstances, one perfect network management system is the guaranty of reliable and stable operating. Army ATC (Air Traffic Control) system is a special、real-time、important system, and it is not permitted to stop system. The system must has high reliability、security、and stability. The design and implementation of network monitoring system strongly assures the realization of the above goals. As a member of network monitoring system group, the writer joined the design of network monitoring system as well as assumed the design and coding of server agent. According to real work, the paper firstly present some basic knowledge of network management, including: management model(the centralized management and the distributed management)、SNMP management model –is widely adopted at present、software agent technology. And then according to the specific、especial system monitoring requirement and network system structure, combined with the good properties of the centralized management, the distributed management and the distributed agent, the paper present a innovatory network monitoring technology that is based on agent. The monitor method successfully solved the multiplicity of devices and monitoring requirement, which provide a convenient、reliable、safe monitoring software for the system.The structure of whole network monitoring system and the function of each part are analyzed. There is a technical monitor station that managed the all devices in monitor system. There is a monitor agent that gathers the monitoring information and reports to technical monitor station, receives the commands sent by technical monitor station and does proper action in each device. Server agent coded <WP=5>by writer is presented in detail through the SART method,and some creative key technologies are analyzed such as the combination of the software signal、the properties of process and process communication that not only solved the real monitoring problem;the adoption of the UNIX phoney system-PROCFS that not only solved the real monitoring problem;Encoding and decoding to SNMP message on BER-solved the problem on monitor between several operating system.The research results presented above have been successfully applied in Army ATC. With the high standard, the Army ATC passed the factory’s check and gained high evaluation of ATM experts..更多还原