Installation and use of iperf3

Installing iperf3

Based on your operating system, choose the method for your system below:

CentOS 7.5:# yum install -y iperf3

Red Hat 8:# dnf install iperf3 

Ubuntu 18.04:# apt install -y iperf3

Windows Server 2022: 
Download the current 64-bit version for Windows from https://iperf.fr/iperf-download.php and extract the zip file

Using iperf3

iperf3 needs to be installed on both ends of the connection you are testing.

• On one of the machines, start an iperf3 server. We will call this Machine A:
  $ iperf3 --server

• On the other machine (Machine B) start an iperf3 client, and include the IP address of Machine A:
  $ iperf3 --client 10.0.0.1

For accuracy, tests should run for at least 30 seconds. You can specify the test time on the client side with:

$ iperf3 --client 10.0.0.1 --time 30

The direction of testing can also be reversed with the "R" flag:

$ iperf3 --client 10.0.0.1 --time 30 -R

Other useful iperf3 examples:

$ iperf3 --client 10.0.0.1 --set-mss 1350 (Specify mss)

$ iperf3 --client 10.0.0.1 --file /tmp/1g.img (Specify a file to test I/O)

$ iperf3 --client 10.0.0.1 --verbose (More verbosity)

$ iperf3 --client 10.0.0.1 --bitrate x (Specify test bits/sec)