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Assessing change: A methodology for verifying performance after a fundamental change in the network

机译：评估变更：在网络发生根本变更后验证性能的方法

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"First, do no harm" is a principle tenet of medicine as well as Information Technology. But how does one know if the outcome of a change was positive, negative or neutral? At SAS Institute, performance data was analyzed in an effort to answer that question after the network routing protocol was changed from RIP (Routing Information Protocol) to Cisco's EIGRP (Enhanced Interior Gateway Routing Protocol). More than 400,000 throughput and response time measurements, gathered for a month before and after the changeover, were examined to assess the change's impact. The methodology verifies that EIGRP, to 95% certainty, did not harm network performance.
机译：“首先，不伤害”是医学和信息技术的原则。但是，人们怎么知道变化的结果是正面的，负面的还是中性的呢？在SAS研究所，对性能数据进行了分析，以试图将网络路由协议从RIP（路由信息协议）更改为Cisco的EIGRP（增强型内部网关路由协议）后回答该问题。在转换前后一个月内，共收集了超过40万个吞吐量和响应时间度量，以评估更改的影响。该方法可以验证EIGRP达到95％的确定性不会损害网络性能。

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