> aptitude install iperf


## Server side

>iperf -s
------------------------------------------------------------
Server listening on TCP port 5001
TCP window size: 85.3 KByte (default)
------------------------------------------------------------
[  4] local 192.168.70.67 port 5001 connected with 192.168.70.88 port 50809
[ ID] Interval       Transfer     Bandwidth
[  4]  0.0-10.0 sec  2.58 GBytes  2.21 Gbits/sec

## Client Side

> iperf -c 192.168.70.67 -t 10 -i 2
------------------------------------------------------------
Client connecting to 192.168.70.67, TCP port 5001
TCP window size: 16.0 KByte (default)
------------------------------------------------------------
[  3] local 192.168.70.88 port 50809 connected with 192.168.70.67 port 5001
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0- 2.0 sec    523 MBytes  2.19 Gbits/sec
[  3]  2.0- 4.0 sec    520 MBytes  2.18 Gbits/sec
[  3]  4.0- 6.0 sec    522 MBytes  2.19 Gbits/sec
[  3]  6.0- 8.0 sec    542 MBytes  2.28 Gbits/sec
[  3]  8.0-10.0 sec    533 MBytes  2.23 Gbits/sec
[  3]  0.0-10.0 sec  2.58 GBytes  2.21 Gbits/sec


## Server Side , with port

> debian2:~# iperf -s -p 80
------------------------------------------------------------
Server listening on TCP port 80
TCP window size: 85.3 KByte (default)
------------------------------------------------------------
[  4] local 192.168.70.67 port 80 connected with 192.168.70.88 port 47443
[ ID] Interval       Transfer     Bandwidth
[  4]  0.0-10.0 sec  2.62 GBytes  2.25 Gbits/sec

## Client Side, with port

> iperf -c 192.168.70.67 -p 80 -t 10 -i 2
------------------------------------------------------------
Client connecting to 192.168.70.67, TCP port 80
TCP window size: 16.0 KByte (default)
------------------------------------------------------------
[  3] local 192.168.70.88 port 47443 connected with 192.168.70.67 port 80
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0- 2.0 sec    527 MBytes  2.21 Gbits/sec
[  3]  2.0- 4.0 sec    535 MBytes  2.24 Gbits/sec
[  3]  4.0- 6.0 sec    535 MBytes  2.24 Gbits/sec
[  3]  6.0- 8.0 sec    546 MBytes  2.29 Gbits/sec
k[  3]  0.0-10.0 sec  2.62 GBytes  2.25 Gbits/sec