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ZDNet IT Resource: A bandwidth lifesaver [using iperf]

Apr 07, 2001, 13:05 (2 Talkback[s])
(Other stories by Bob Currier)


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"In my last column I showed you how adjusting TCP window size settings can dramatically affect network throughput. In this column I'll show you how to download and install the free Iperf network performance testing tool from the National Laboratory for Applied Network Research (NLANR). I'll also walk you through a real-life case study to show you how using the information provided by Iperf can help you bust those network performance bottlenecks."

"A quick review: Iperf is a performance measurement tool for TCP/IP and UDP/IP that provides network throughput information and statistics on jitter, packet loss, and maximum segment and transmission unit sizes. It was designed to overcome limitations in older tools such as ttcp and nettest."

"Iperf is available in both source code and binary formats. If you downloaded a binary distribution, use the appropriate tool (rpm if you're running Linux) to install Iperf. Otherwise, download the source code from NLANR and uncompress it using the command tar xvfz iperf-1.1.1.tar.gz. Change to the iperf-1.1.1 directory and type make install."

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