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[WLA/WLC] Example - Using the iPerf utility to test the throughput of the wireless infrastructure via the CLI

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Article ID: KB32341 KB Last Updated: 27 Dec 2017Version: 1.0
Summary:

This article provides an example using the iPerf utility on Windows to test the throughput of the wireless infrastructure.

The iPerf utility can be used to determine the throughput obtained by devices in the wireless network and to troubleshoot the performance issue in the wireless network.

Solution:

This example setup bypasses the Internet connection and relies on the local connection to measure the wireless throughput.

Note: This is only an example. For details on how to use iPerf, refer to the manufacturer of iPerf.

Test Setup:

1.   The iPerf utility from http://iperf.fr/ was used in this example.
2.   A wired computer was setup to serve as a “server”.
3.   A copy of the “iperf.exe and the supporting dll file files” were copied to the C:/ drive.
4.   A wireless computer was setup to serve as a “client”.
5.   A copy of the “iperf.exe and the supporting dll file files” were copied to the C:/ drive.

Test Procedure:

1. On the wired PC, the iPerf server, the command  " iperf.exe –s  " was run:


 
2. The wireless PC, the IPERF client, was connected to the SSID in question.
 
3. On the wireless PC, the command " iperf.exe – c  <IP address of the server>   -P 10  -w 1000k " was run:
               (  -P refers to the number of parallel TCP streams and –w refers to the TCP window size  )



4. Step 3 was repeated in different periodic intervals, and the outputs were collected to determine the throughput.

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