Use iperf The tool tests the bandwidth between H1 and H2 for basic performance evaluation.
Experimental environment:
CentOS7 minimize installation, Mininet 2.2.2
Ubuntu or CentOS with a graphical desktop is recommended for viewing output
Steps:
1. To install the iperf command, please refer to Install Iperf under CentOS 7
We use quick install here
# wget -O /usr/bin/iperf https://iperf.fr/download/ubuntu/iperf_2.0.9 # chmod +x /usr/bin/iperf
After installation, start mininet to generate a default topology.
# mn --topo=minimal
#If you use a graphical interface, you can use xterm to open windows for h1 and h2
mininet> xterm h1 h2
Because of the character interface used here, it is omitted.
mininet> h1 iperf -s -p 5566 -i 1 & \\Appoint h1 by iperf Server (-s)，Set port(-p)，Monitor results every second(-i)，And run in the background(&) \\If running in the foreground, after the client executes the command, H1 The following information will be printed out ------------------------------------------------------------ Server listening on TCP port 5566 TCP window size: 85.3 KByte (default) ------------------------------------------------------------ [ 4] local 10.0.0.1 port 5566 connected with 10.0.0.2 port 34358 [ ID] Interval Transfer Bandwidth [ 4] 0.0- 1.0 sec 2.40 GBytes 20.7 Gbits/sec [ 4] 1.0- 2.0 sec 2.40 GBytes 20.6 Gbits/sec [ 4] 2.0- 3.0 sec 2.45 GBytes 21.0 Gbits/sec [ 4] 3.0- 4.0 sec 2.56 GBytes 22.0 Gbits/sec [ 4] 4.0- 5.0 sec 2.40 GBytes 20.6 Gbits/sec [ 4] 5.0- 6.0 sec 2.49 GBytes 21.4 Gbits/sec [ 4] 6.0- 7.0 sec 2.43 GBytes 20.8 Gbits/sec [ 4] 7.0- 8.0 sec 2.56 GBytes 22.0 Gbits/sec [ 4] 8.0- 9.0 sec 2.53 GBytes 21.7 Gbits/sec [ 4] 9.0-10.0 sec 2.58 GBytes 22.2 Gbits/sec [ 4] 10.0-11.0 sec 2.60 GBytes 22.3 Gbits/sec [ 4] 11.0-12.0 sec 2.60 GBytes 22.4 Gbits/sec [ 4] 12.0-13.0 sec 2.60 GBytes 22.4 Gbits/sec [ 4] 13.0-14.0 sec 2.33 GBytes 20.0 Gbits/sec [ 4] 14.0-15.0 sec 2.46 GBytes 21.1 Gbits/sec [ 4] 0.0-15.0 sec 37.4 GBytes 21.4 Gbits/sec
mininet> h2 iperf -c 10.0.0.1 -p 5566 -t 15 \\Appoint h2 by TCP Client side (-c)，Specify server address and port(-p)，Set transmission duration(-t) ------------------------------------------------------------ Client connecting to 10.0.0.1, TCP port 5566 TCP window size: 85.3 KByte (default) ------------------------------------------------------------ [ 3] local 10.0.0.2 port 34358 connected with 10.0.0.1 port 5566 [ ID] Interval Transfer Bandwidth [ 3] 0.0-15.0 sec 37.4 GBytes 21.4 Gbits/sec mininet>
Result:
h2: in 0-15 seconds, the average throughput is 21.4Gbits/sec
h1: shows throughput per second
Simple usage:
mininet> iperf h1 h2
Appendix: for more information about the use of iperf command, please refer to iperf command usage
Blog: LIMEXC