iperf Test Throughput of link

In my day to day office work. I need to check actual throughput of the local link, that should be wire or wireless. For that process I use iperf tool which is perfect tool for the purpose.

Here I write tutorial how to use that tool. I'm using this tool for window, so download iperf for window and place it in Desktop or as your choice.

Now go to that folder using cd [FolderName], in my case I place it on desktop.

C:\Users\jpudasaini\Desktop\iperf>dir

03/13/2013  08:07 AM    <DIR>          .
03/13/2013  08:07 AM    <DIR>          ..
08/15/2010  01:54 AM            46,094 cyggcc_s-1.dll
08/15/2010  01:54 AM           791,566 cygstdc++-6.dll
08/31/2010  09:00 AM         2,648,181 cygwin1.dll
06/22/2011  03:56 PM    <DIR>          doc
03/13/2013  07:09 AM         1,268,927 iperf-2.0.5-2-win32.zip
02/02/2011  02:00 PM            95,125 iperf.exe
03/13/2013  08:07 AM               298 test.txt
               6 File(s)      4,850,191 bytes
               3 Dir(s)  36,552,073,216 bytes free

We need to create server first, for that use following command,

C:\Users\jpudasaini\Desktop\iperf>iperf -s

you are in iperf directory, from there just use following command to test the actual bandwidth of the link

C:\Users\jpudasaini\Desktop\iperf>iperf -c 10.10.10.10
Output might look like this

------------------------------------------------------------
Client connecting to 10.10.10.10, TCP port 5001
TCP window size: 64.0 KByte (default)
------------------------------------------------------------
[  3] local 10.10.10.11 port 54723 connected with 10.10.10.10 port 5001
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0-10.0 sec   100 MBytes  84.0 Mbits/sec

If you like to test bidirectional use this command
 C:\Users\jpudasaini\Desktop\iperf>iperf -c 10.10.10.10 -d