In the computer network system, performance evaluation is the core content of the computer network planning and management. Based on analysis of the computer network structures and hardware, the method of computer network performance evaluation was divided into four, which were empirical rule, analysis method, measure method and simulation method from the cost and complexity. At the same time, on evaluating the performance index of the computer network system, the measurable and immeasurable performance indexes were all discussed in detail. And then, it analyzed the influence factors of computer network performance. Finally, the acquisition of measurable performance index is achieved by SNMP protocol.%计算机网络系统的性能评测是网络规划和网络管理的核心内容.基于对计算机网络的基本结构和计算机网络硬件设备的功能分析,从复杂性和成本的角度来说,计算机网络性能评测的方法分为四种,即经验法则、分析方法、测量方法以及仿真方法.同时,着眼于评测计算机网络系统的性能指标,对可度量的性能指标与不可度量的性能指标进行了详细的讨论.并分析了影响计算机网络性能的因素.最后,基于SNMP协议对可度量的性能指标的获取进行了实现.
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