root@vegas812 ~# iperf -c 192.168.2.50 -p 4711
------------------------------------------------------------
Client connecting to 192.168.2.50, TCP port 4711
TCP window size: 20.7 KByte (default)
------------------------------------------------------------
[  3] local 192.168.2.20 port 50577 connected with 192.168.2.50 port 4711
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0-10.0 sec  54.1 MBytes  45.2 Mbits/sec