$ iperf -dc 10.0.1.173 -t 20 -i 2 -m
WARNING: option -d is not valid for server mode
------------------------------------------------------------
Client connecting to 10.0.1.173, TCP port 5001
TCP window size: 22.9 KByte (default)
------------------------------------------------------------
[  3] local 10.0.1.174 port 37097 connected with 10.0.1.173 port 5001
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0- 2.0 sec   214 MBytes   898 Mbits/sec
[  3]  2.0- 4.0 sec   218 MBytes   915 Mbits/sec
[  3]  4.0- 6.0 sec   217 MBytes   909 Mbits/sec
[  3]  6.0- 8.0 sec   216 MBytes   907 Mbits/sec
[  3]  8.0-10.0 sec   218 MBytes   914 Mbits/sec
[  3] 10.0-12.0 sec   218 MBytes   915 Mbits/sec
[  3] 12.0-14.0 sec   218 MBytes   915 Mbits/sec
[  3] 14.0-16.0 sec   217 MBytes   911 Mbits/sec
[  3] 16.0-18.0 sec   219 MBytes   917 Mbits/sec
[  3] 18.0-20.0 sec   217 MBytes   911 Mbits/sec
[  3]  0.0-20.0 sec  2.12 GBytes   911 Mbits/sec
[  3] MSS size 1448 bytes (MTU 1500 bytes, ethernet)