General Information

iperf allows testing of network throughput. It requires you to install iperf on a source and destination system.

Checklist

• Distro(s): Enterprise Linux 6

• Add the EPEL repo.
• Install iperf on the “client” and “server” system.

  yum install iperf

Note: Transfers are from client to server, ie: upload transfer. (Unless doing bi-directional tests)

• The client transfers data to the server, and the server throws away the data.

• Start iperf on the “server” system.

  iperf -s

  • Specify what port iperf listens on with the '-p <port>' option.

    iperf -s -p 1337

  • Specify an address for iperf to listen on (-B for bind) - useful if you ened to specify a 10 Gb interface

    iperf -s -B 10.0.0.1 -p 1337

• Run the test from the client
  • Basic test with default settings

    iperf -c <server-ip>

  • Basic test, specify server listening port

    iperf -c <server-ip> -p 1337

  • Bi-directional test

    iperf -c <server-ip> -p 1337 -d

  • Custom Test: Bandwidth format in MBytes/sec (-f M), show max segment size and MTU (-m), pause 2 seconds in between reports (-i 2), transmit for 30 seconds (-t 30).

    iperf -c <server-ip> -p 1337 -f M -m -i 2 -t 30