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WiscNet hosted Speedtest.net

For a quick and easy reading, you may use to use an HTML based browser test:

http://speedtest.wiscnet.net/

WiscNet hosted IPERF

Iperf is a commonly used network testing tool to help measure network throughput. Since it is an open source tool, there are clients for Windows, Mac, Linux, Bsd, etc. It will generally give you more detailed results than a browser based speedtest.

Iperf operates where one end is the client, the other is the server. WiscNet runs an IPERF version 2 server in Eau Claire, WI. TCP is port 5001, UDP is port 5002. The server is restricted to WiscNet IP addresses.

Examples

iperf.wiscnet.net runs a TCP Iperf server on the default port (5001). The most basic TCP test:

    iperf -c iperf.wiscnet.net -i2

iperf.wiscnet.net runs a UDP Iperf server on port 5002 (-p). this test uses UDP (-u), sends 1gbps (-b) , reports every 2 seconds (-i), runs for 30 seconds (-t), with 10 parallel threads (-P)

    iperf -c iperf.wiscnet.net -p 5002 -b 1g -t30 -i2 -P10

Preparation

Note

Please note that

For best results please test while connected to wired ethernet
The accuracy of this speed test diminishes with larger bandwidth circuits
The hardware performance of the computer running this test has a significant impact on results
Any other activity on your network and any devices between your computer and the Internet will impact your speed.

You will see the best results if you schedule a time to disconnect your local network and plug your test computer directly into the WiscNet router.

If you cannot take down your network, we recommend connecting your test computer to your network as close as you can to the WiscNet device and using graphs.wiscnet.net or local monitoring to estimate how much bandwidth is being used before you start your test.

Web Browser based speed test

http://speedtest.wiscnet.net/openspeedtest - WiscNet's locally hosted web based speedtest. Server has 10gbps connectivty.

https://fast.com/ - Alternate speedtest hosted by Netflix but served from WiscNet's network

WiscNet-hosted iperf

iperf is a network testing tool used to help measure network throughput. It's developed by ESnet / Lawrence Berkeley National Laboratory. For more information please visit http://software.es.net/iperf/ and https://github.com/esnet/iperf

Expand

title	Click here to expand technical details...

Overview

iperf is an open source tool. There are clients for Mac, Linux, BSD, etc. There is a port for Windows; however, in our testing we found it to lack certain features and to lag in performance.
iperf operates where one end is the client, the other is the server.

WiscNet Server Details

WiscNet runs an iperf version 2 server in Madison, WI. This server has a 10gbps uplink.
The server is restricted to WiscNet IP addresses
iperf2 and iperf3 are incompatible
iperf.wiscnet.net runs a TCP iperf server on the default port 5001
iperf.wiscnet.net runs a UDP iperf server on port 5001
iperf.ipv6.wiscnet.net runs a v6 TCP iperf server on port 5001
iperf.ipv6.wiscnet.net runs a v6 UDP iperf server on port 5001

TCP vs UDP Testing

iperf uses TCP by default. TCP has built in congestion avoidance. If TCP detects any packet loss, it assumes that the link capacity has been reached, and it slows down. This works very well, unless there is packet loss caused by something other than congestion. If there is packet loss due to errors, TCP will back off even if there is plenty of capacity. iperf allows TCP to send as fast as it can, which generally works to fill a clean, low latency link with packets. If a path is not clean/error free or has high latency, TCP will have a difficult time filling it. For testing higher capacity links and for links with higher latency, you will want to adjust the window size (-w option).
By using the -u option, you have told iperf to use UDP packets, rather than TCP. UDP has no built in congestion avoidance, and iperf doesn't implement it either. When doing a UDP test, iperf requires that the bandwidth of the test be specified. If it isn't, it defaults to 1Mb/s. You can use the -b option to specify bandwidth to test. iperf will then send packets at the request rate for the requested period of time. The other end measures how many packets are received vs how many were sent and reports its results.

Some Common iperf Flags

Enter iperf -h or man iperf depending on your operating system. Here are some common flags:

Flag	Details	Example
-c	Client mode	-c
-t	Time to run the test in seconds	-t 30
-P	Number of parallel connections	-P 2
-u	UDP (default is TCP)	-u
-b	Bandwidth per thread	-b 250m
-i	Interval between bandwidth reports in seconds	-i 1
-L	Listen on port	-L 5001
-r	bidirectional test (individually)	-r
-d	bidirectional test (simultaneously)	-d
-V	Use ipv6 (this is required even when specifying an IPv6 address)	-V

Note

The hardware performance of the client running this test has a significant impact on results

WiscNet has noticed that the iperf clients for Linux, Unix, and macOS perform better than the ports for Windows

These commands are for iperf 2, not iperf 3

Unidirectional UDP 1Gbps circuit test

Command

Code Block
iperf -c iperf.wiscnet.net -t 60 -P 20 -u -b 50m -i1

Info

" -t 10 " = 10 seconds. Since graphs.wiscnet.net pools every 5 minutes, you can modify the -t parameter to run it long enough for the graphs to reflect the speeds.

On some windows platforms, the above command works great for the upload and the command below generates more traffic for the download

Code Block
iperf -c iperf.wiscnet.net -t 60 -P 10 -u -b 100m -i1

Results

Expand

title	Click here to expand results...

When runing multiple threads you must look at the SUM lines for total throughput. Output below shows successfully getting 953Mbits/sec through

No Format

$ iperf -c iperf.wiscnet.net -t 10 -P 4 -u -b 250m -i1
------------------------------------------------------------
Client connecting to iperf.wiscnet.net, UDP port 5001
Sending 1470 byte datagrams
UDP buffer size:  208 KByte (default)
------------------------------------------------------------
[  5] local 10.0.10.105 port 44098 connected with 205.213.14.56 port 5001
[  3] local 10.0.10.105 port 46090 connected with 205.213.14.56 port 5001
[  4] local 10.0.10.105 port 38200 connected with 205.213.14.56 port 5001
[  6] local 10.0.10.105 port 59296 connected with 205.213.14.56 port 5001
[ ID] Interval       Transfer     Bandwidth
[  5]  0.0- 1.0 sec  28.4 MBytes   238 Mbits/sec
[  3]  0.0- 1.0 sec  28.5 MBytes   239 Mbits/sec
[  4]  0.0- 1.0 sec  28.6 MBytes   240 Mbits/sec
[  6]  0.0- 1.0 sec  28.6 MBytes   240 Mbits/sec
[SUM]  0.0- 1.0 sec   114 MBytes   957 Mbits/sec
[  5]  1.0- 2.0 sec  28.5 MBytes   239 Mbits/sec
[  3]  1.0- 2.0 sec  28.4 MBytes   238 Mbits/sec
[  4]  1.0- 2.0 sec  28.5 MBytes   239 Mbits/sec
[  6]  1.0- 2.0 sec  28.2 MBytes   236 Mbits/sec
[SUM]  1.0- 2.0 sec   114 MBytes   953 Mbits/sec
[  5]  2.0- 3.0 sec  28.4 MBytes   238 Mbits/sec
[  3]  2.0- 3.0 sec  28.2 MBytes   237 Mbits/sec
[  4]  2.0- 3.0 sec  28.6 MBytes   240 Mbits/sec
[  6]  2.0- 3.0 sec  28.5 MBytes   239 Mbits/sec
[SUM]  2.0- 3.0 sec   114 MBytes   953 Mbits/sec
[  5]  3.0- 4.0 sec  28.3 MBytes   238 Mbits/sec
[  3]  3.0- 4.0 sec  28.3 MBytes   238 Mbits/sec
[  4]  3.0- 4.0 sec  28.5 MBytes   239 Mbits/sec
[  6]  3.0- 4.0 sec  28.4 MBytes   239 Mbits/sec
[SUM]  3.0- 4.0 sec   114 MBytes   952 Mbits/sec
[  5]  4.0- 5.0 sec  28.3 MBytes   237 Mbits/sec
[  3]  4.0- 5.0 sec  28.3 MBytes   238 Mbits/sec
[  4]  4.0- 5.0 sec  28.3 MBytes   238 Mbits/sec
[  6]  4.0- 5.0 sec  28.7 MBytes   241 Mbits/sec
[SUM]  4.0- 5.0 sec   114 MBytes   954 Mbits/sec
[  5]  5.0- 6.0 sec  28.6 MBytes   240 Mbits/sec
[  3]  5.0- 6.0 sec  28.4 MBytes   238 Mbits/sec
[  4]  5.0- 6.0 sec  28.3 MBytes   238 Mbits/sec
[  6]  5.0- 6.0 sec  28.5 MBytes   239 Mbits/sec
[SUM]  5.0- 6.0 sec   114 MBytes   955 Mbits/sec
[  5]  6.0- 7.0 sec  28.5 MBytes   239 Mbits/sec
[  3]  6.0- 7.0 sec  28.3 MBytes   238 Mbits/sec
[  4]  6.0- 7.0 sec  28.5 MBytes   239 Mbits/sec
[  6]  6.0- 7.0 sec  28.3 MBytes   237 Mbits/sec
[SUM]  6.0- 7.0 sec   114 MBytes   953 Mbits/sec
[  5]  7.0- 8.0 sec  28.4 MBytes   238 Mbits/sec
[  3]  7.0- 8.0 sec  28.4 MBytes   238 Mbits/sec
[  4]  7.0- 8.0 sec  28.3 MBytes   238 Mbits/sec
[  6]  7.0- 8.0 sec  28.5 MBytes   239 Mbits/sec
[SUM]  7.0- 8.0 sec   114 MBytes   953 Mbits/sec
[  5]  8.0- 9.0 sec  28.5 MBytes   239 Mbits/sec
[  3]  8.0- 9.0 sec  28.3 MBytes   237 Mbits/sec
[  4]  8.0- 9.0 sec  28.4 MBytes   238 Mbits/sec
[  6]  8.0- 9.0 sec  28.4 MBytes   238 Mbits/sec
[SUM]  8.0- 9.0 sec   114 MBytes   953 Mbits/sec
read failed: Connection refused
[  3] WARNING: did not receive ack of last datagram after 1 tries.
[  5]  9.0-10.0 sec  28.5 MBytes   239 Mbits/sec
[  5]  0.0-10.0 sec   284 MBytes   239 Mbits/sec
[  5] Sent 202875 datagrams
[  3]  0.0-10.0 sec   284 MBytes   238 Mbits/sec
[  3] Sent 202276 datagrams
[  4]  0.0-10.0 sec   284 MBytes   239 Mbits/sec
[  4] Sent 202852 datagrams
[  6]  0.0-10.0 sec   285 MBytes   239 Mbits/sec
[  6] Sent 203078 datagrams
[SUM]  0.0-10.0 sec  1.11 GBytes   954 Mbits/sec
read failed: Connection refused
[  5] WARNING: did not receive ack of last datagram after 5 tries.
read failed: Connection refused
[  6] WARNING: did not receive ack of last datagram after 9 tries.
[  4] WARNING: did not receive ack of last datagram after 10 tries.

Bidirectional UDP 1Gbps circuit test

Note
Check your firewall settings and NAT to ensure port 5001 is open to your host

Command

Code Block
iperf -c iperf.wiscnet.net -t 60 -P 20 -u -b 50m -i1 -r

iperf Server

iperf can be run as a server so someone else can run tests against your machines.

Code Block
iperf -s

iperf Installation

Microsoft Windows

Expand

title	Click here to expand the Windows example...

Windows - Install

Download and extract iperf2: iperf-2.0.10-win.zip
Right-click the downloaded iperf-2.0.10-win32.zip file and extract the contents of the .zip to any folder (seen here under \Users\Administrator)
Open a command prompt and navigate to the extracted iperf2 folder:
Image Added

Code Block

theme	Confluence

cd \Users\Administrator\iperf-2.0.10-win\
dir

Image Added

Windows - Example

Image Added

Apple macOS

Expand

title	Click here to expand the MacOS example...

Download and extract: iperf-2.0.5-macos-x86_64.zip
Open a terminal
cd to your extracted iperf folder

macOS - Install

Code Block

theme	Confluence

iMac:~ $ cd Downloads/iperf-2.0.5-macos-x86_64

iMac:iperf-2.0.5-macos-x86_64 $ ls -lh
total 176
-rw-r--r--  1   staff   693B Feb 20  2011 README
drwxr-xr-x@ 8   staff   272B Feb 20  2011 doc
-rwxr-xr-x@ 1   staff    78K Feb 20  2011 iperf
-rw-r--r--@ 1   staff   3.7K Feb 20  2011 iperf.1

macOS - Example

Code Block

theme	Confluence

$ ./iperf -c iperf.wiscnet.net -t 10 -P 20 -u -b 50m -i1

------------------------------------------------------------
Client connecting to iperf.wiscnet.net, UDP port 5001
Sending 1470 byte datagrams
UDP buffer size: 9.00 KByte (default)
------------------------------------------------------------
[ 24] local 10.0.10.144 port 56371 connected with 205.213.14.56 port 5001
[  5] local 10.0.10.144 port 64614 connected with 205.213.14.56 port 5001
[  8] local 10.0.10.144 port 53381 connected with 205.213.14.56 port 5001
[  6] local 10.0.10.144 port 62212 connected with 205.213.14.56 port 5001
[ 10] local 10.0.10.144 port 50300 connected with 205.213.14.56 port 5001
[ 14] local 10.0.10.144 port 62009 connected with 205.213.14.56 port 5001
[ 15] local 10.0.10.144 port 50449 connected with 205.213.14.56 port 5001
[ 13] local 10.0.10.144 port 56271 connected with 205.213.14.56 port 5001
[ 16] local 10.0.10.144 port 53114 connected with 205.213.14.56 port 5001
[  9] local 10.0.10.144 port 56503 connected with 205.213.14.56 port 5001
[ 19] local 10.0.10.144 port 64738 connected with 205.213.14.56 port 5001
[ 17] local 10.0.10.144 port 51477 connected with 205.213.14.56 port 5001
[ 18] local 10.0.10.144 port 57188 connected with 205.213.14.56 port 5001
[ 12] local 10.0.10.144 port 60351 connected with 205.213.14.56 port 5001
[  7] local 10.0.10.144 port 61574 connected with 205.213.14.56 port 5001
[ 20] local 10.0.10.144 port 59632 connected with 205.213.14.56 port 5001
[ 22] local 10.0.10.144 port 60200 connected with 205.213.14.56 port 5001
[ 21] local 10.0.10.144 port 50617 connected with 205.213.14.56 port 5001
[ 23] local 10.0.10.144 port 61880 connected with 205.213.14.56 port 5001
[ 11] local 10.0.10.144 port 61734 connected with 205.213.14.56 port 5001
[ ID] Interval       Transfer     Bandwidth
[ 24]  0.0- 1.0 sec  5.94 MBytes  49.8 Mbits/sec
[  5]  0.0- 1.0 sec  5.94 MBytes  49.9 Mbits/sec
[  8]  0.0- 1.0 sec  5.96 MBytes  50.0 Mbits/sec
[  6]  0.0- 1.0 sec  5.95 MBytes  49.9 Mbits/sec
[ 10]  0.0- 1.0 sec  5.93 MBytes  49.8 Mbits/sec
[ 14]  0.0- 1.0 sec  5.93 MBytes  49.7 Mbits/sec
[ 15]  0.0- 1.0 sec  5.92 MBytes  49.7 Mbits/sec
[ 13]  0.0- 1.0 sec  5.90 MBytes  49.5 Mbits/sec
[ 16]  0.0- 1.0 sec  5.87 MBytes  49.3 Mbits/sec
[  9]  0.0- 1.0 sec  5.84 MBytes  49.0 Mbits/sec
[ 19]  0.0- 1.0 sec  5.82 MBytes  48.9 Mbits/sec
[ 17]  0.0- 1.0 sec  5.77 MBytes  48.4 Mbits/sec
[ 18]  0.0- 1.0 sec  5.69 MBytes  47.7 Mbits/sec
[ 12]  0.0- 1.0 sec  5.63 MBytes  47.2 Mbits/sec
[  7]  0.0- 1.0 sec  5.63 MBytes  47.2 Mbits/sec
[ 20]  0.0- 1.0 sec  5.58 MBytes  46.8 Mbits/sec
[ 22]  0.0- 1.0 sec  5.57 MBytes  46.7 Mbits/sec
[ 21]  0.0- 1.0 sec  5.54 MBytes  46.5 Mbits/sec
[ 23]  0.0- 1.0 sec  5.58 MBytes  46.8 Mbits/sec
[ 11]  0.0- 1.0 sec  5.57 MBytes  46.7 Mbits/sec
[SUM]  0.0- 1.0 sec   116 MBytes   969 Mbits/sec
[ 24]  1.0- 2.0 sec  5.93 MBytes  49.7 Mbits/sec
[  5]  1.0- 2.0 sec  5.93 MBytes  49.8 Mbits/sec
[  8]  1.0- 2.0 sec  5.93 MBytes  49.7 Mbits/sec
[  6]  1.0- 2.0 sec  5.93 MBytes  49.8 Mbits/sec
[ 10]  1.0- 2.0 sec  5.92 MBytes  49.7 Mbits/sec
[ 14]  1.0- 2.0 sec  5.92 MBytes  49.6 Mbits/sec
[ 15]  1.0- 2.0 sec  5.89 MBytes  49.4 Mbits/sec
[ 13]  1.0- 2.0 sec  5.86 MBytes  49.2 Mbits/sec
[ 16]  1.0- 2.0 sec  5.83 MBytes  48.9 Mbits/sec
[  9]  1.0- 2.0 sec  5.81 MBytes  48.7 Mbits/sec
[ 19]  1.0- 2.0 sec  5.77 MBytes  48.4 Mbits/sec
[ 17]  1.0- 2.0 sec  5.70 MBytes  47.8 Mbits/sec
[ 18]  1.0- 2.0 sec  5.59 MBytes  46.9 Mbits/sec
[ 12]  1.0- 2.0 sec  5.53 MBytes  46.4 Mbits/sec
[  7]  1.0- 2.0 sec  5.42 MBytes  45.5 Mbits/sec
[ 20]  1.0- 2.0 sec  5.46 MBytes  45.8 Mbits/sec
[ 22]  1.0- 2.0 sec  5.38 MBytes  45.1 Mbits/sec
[ 21]  1.0- 2.0 sec  5.37 MBytes  45.0 Mbits/sec
[ 23]  1.0- 2.0 sec  5.36 MBytes  45.0 Mbits/sec
[ 11]  1.0- 2.0 sec  5.40 MBytes  45.3 Mbits/sec
[SUM]  1.0- 2.0 sec   114 MBytes   956 Mbits/sec
[ 24]  2.0- 3.0 sec  5.91 MBytes  49.6 Mbits/sec
[  5]  2.0- 3.0 sec  5.93 MBytes  49.8 Mbits/sec
[  8]  2.0- 3.0 sec  5.94 MBytes  49.8 Mbits/sec
[  6]  2.0- 3.0 sec  5.93 MBytes  49.8 Mbits/sec
[ 10]  2.0- 3.0 sec  5.93 MBytes  49.8 Mbits/sec
[ 14]  2.0- 3.0 sec  5.92 MBytes  49.7 Mbits/sec
[ 15]  2.0- 3.0 sec  5.90 MBytes  49.5 Mbits/sec
[ 13]  2.0- 3.0 sec  5.87 MBytes  49.3 Mbits/sec
[ 16]  2.0- 3.0 sec  5.82 MBytes  48.8 Mbits/sec
[  9]  2.0- 3.0 sec  5.79 MBytes  48.6 Mbits/sec
[ 19]  2.0- 3.0 sec  5.78 MBytes  48.5 Mbits/sec
[ 17]  2.0- 3.0 sec  5.71 MBytes  47.9 Mbits/sec
[ 18]  2.0- 3.0 sec  5.64 MBytes  47.3 Mbits/sec
[ 12]  2.0- 3.0 sec  5.58 MBytes  46.8 Mbits/sec
[  7]  2.0- 3.0 sec  5.45 MBytes  45.7 Mbits/sec
[ 20]  2.0- 3.0 sec  5.39 MBytes  45.2 Mbits/sec
[ 22]  2.0- 3.0 sec  5.36 MBytes  45.0 Mbits/sec
[ 21]  2.0- 3.0 sec  5.36 MBytes  45.0 Mbits/sec
[ 23]  2.0- 3.0 sec  5.37 MBytes  45.0 Mbits/sec
[ 11]  2.0- 3.0 sec  5.35 MBytes  44.9 Mbits/sec
[SUM]  2.0- 3.0 sec   114 MBytes   956 Mbits/sec
[ 24]  3.0- 4.0 sec  5.82 MBytes  48.8 Mbits/sec
[  5]  3.0- 4.0 sec  5.85 MBytes  49.1 Mbits/sec
[  8]  3.0- 4.0 sec  5.82 MBytes  48.9 Mbits/sec
[  6]  3.0- 4.0 sec  5.79 MBytes  48.5 Mbits/sec
[ 10]  3.0- 4.0 sec  5.73 MBytes  48.0 Mbits/sec
[ 14]  3.0- 4.0 sec  5.66 MBytes  47.5 Mbits/sec
[ 15]  3.0- 4.0 sec  5.58 MBytes  46.8 Mbits/sec
[ 13]  3.0- 4.0 sec  5.60 MBytes  47.0 Mbits/sec
[ 16]  3.0- 4.0 sec  5.51 MBytes  46.2 Mbits/sec
[  9]  3.0- 4.0 sec  5.49 MBytes  46.1 Mbits/sec
[ 19]  3.0- 4.0 sec  5.43 MBytes  45.5 Mbits/sec
[ 17]  3.0- 4.0 sec  5.44 MBytes  45.6 Mbits/sec
[ 18]  3.0- 4.0 sec  5.80 MBytes  48.6 Mbits/sec
[ 12]  3.0- 4.0 sec  5.54 MBytes  46.5 Mbits/sec
[  7]  3.0- 4.0 sec  5.80 MBytes  48.6 Mbits/sec
[ 20]  3.0- 4.0 sec  5.82 MBytes  48.8 Mbits/sec
[ 22]  3.0- 4.0 sec  5.83 MBytes  48.9 Mbits/sec
[ 21]  3.0- 4.0 sec  5.81 MBytes  48.7 Mbits/sec
[ 23]  3.0- 4.0 sec  5.81 MBytes  48.7 Mbits/sec
[ 11]  3.0- 4.0 sec  5.79 MBytes  48.6 Mbits/sec
[SUM]  3.0- 4.0 sec   114 MBytes   956 Mbits/sec
[ 24]  4.0- 5.0 sec  5.79 MBytes  48.5 Mbits/sec
[  5]  4.0- 5.0 sec  5.85 MBytes  49.0 Mbits/sec
[  8]  4.0- 5.0 sec  5.81 MBytes  48.8 Mbits/sec
[  6]  4.0- 5.0 sec  5.77 MBytes  48.4 Mbits/sec
[ 10]  4.0- 5.0 sec  5.71 MBytes  47.9 Mbits/sec
[ 14]  4.0- 5.0 sec  5.66 MBytes  47.5 Mbits/sec
[ 15]  4.0- 5.0 sec  5.60 MBytes  47.0 Mbits/sec
[ 13]  4.0- 5.0 sec  5.56 MBytes  46.7 Mbits/sec
[ 16]  4.0- 5.0 sec  5.50 MBytes  46.1 Mbits/sec
[  9]  4.0- 5.0 sec  5.47 MBytes  45.8 Mbits/sec
[ 19]  4.0- 5.0 sec  5.42 MBytes  45.5 Mbits/sec
[ 17]  4.0- 5.0 sec  5.43 MBytes  45.5 Mbits/sec
[ 18]  4.0- 5.0 sec  5.81 MBytes  48.7 Mbits/sec
[ 12]  4.0- 5.0 sec  5.53 MBytes  46.4 Mbits/sec
[  7]  4.0- 5.0 sec  5.80 MBytes  48.6 Mbits/sec
[ 20]  4.0- 5.0 sec  5.82 MBytes  48.8 Mbits/sec
[ 22]  4.0- 5.0 sec  5.87 MBytes  49.2 Mbits/sec
[ 21]  4.0- 5.0 sec  5.81 MBytes  48.8 Mbits/sec
[ 23]  4.0- 5.0 sec  5.81 MBytes  48.8 Mbits/sec
[ 11]  4.0- 5.0 sec  5.80 MBytes  48.6 Mbits/sec
[SUM]  4.0- 5.0 sec   114 MBytes   955 Mbits/sec
[ 24]  5.0- 6.0 sec  5.80 MBytes  48.7 Mbits/sec
[  5]  5.0- 6.0 sec  5.84 MBytes  49.0 Mbits/sec
[  8]  5.0- 6.0 sec  5.77 MBytes  48.4 Mbits/sec
[  6]  5.0- 6.0 sec  5.76 MBytes  48.3 Mbits/sec
[ 10]  5.0- 6.0 sec  5.74 MBytes  48.1 Mbits/sec
[ 14]  5.0- 6.0 sec  5.66 MBytes  47.5 Mbits/sec
[ 15]  5.0- 6.0 sec  5.61 MBytes  47.0 Mbits/sec
[ 13]  5.0- 6.0 sec  5.57 MBytes  46.7 Mbits/sec
[ 16]  5.0- 6.0 sec  5.55 MBytes  46.6 Mbits/sec
[  9]  5.0- 6.0 sec  5.47 MBytes  45.8 Mbits/sec
[ 19]  5.0- 6.0 sec  5.49 MBytes  46.0 Mbits/sec
[ 17]  5.0- 6.0 sec  5.44 MBytes  45.7 Mbits/sec
[ 18]  5.0- 6.0 sec  5.78 MBytes  48.5 Mbits/sec
[ 12]  5.0- 6.0 sec  5.56 MBytes  46.6 Mbits/sec
[  7]  5.0- 6.0 sec  5.79 MBytes  48.6 Mbits/sec
[ 20]  5.0- 6.0 sec  5.82 MBytes  48.8 Mbits/sec
[ 22]  5.0- 6.0 sec  5.86 MBytes  49.1 Mbits/sec
[ 21]  5.0- 6.0 sec  5.82 MBytes  48.8 Mbits/sec
[ 23]  5.0- 6.0 sec  5.80 MBytes  48.7 Mbits/sec
[ 11]  5.0- 6.0 sec  5.79 MBytes  48.6 Mbits/sec
[SUM]  5.0- 6.0 sec   114 MBytes   956 Mbits/sec
[ 24]  6.0- 7.0 sec  5.75 MBytes  48.2 Mbits/sec
[  5]  6.0- 7.0 sec  5.82 MBytes  48.8 Mbits/sec
[  8]  6.0- 7.0 sec  5.80 MBytes  48.6 Mbits/sec
[  6]  6.0- 7.0 sec  5.70 MBytes  47.8 Mbits/sec
[ 10]  6.0- 7.0 sec  5.70 MBytes  47.8 Mbits/sec
[ 14]  6.0- 7.0 sec  5.65 MBytes  47.4 Mbits/sec
[ 15]  6.0- 7.0 sec  5.59 MBytes  46.9 Mbits/sec
[ 13]  6.0- 7.0 sec  5.58 MBytes  46.8 Mbits/sec
[ 16]  6.0- 7.0 sec  5.59 MBytes  46.9 Mbits/sec
[  9]  6.0- 7.0 sec  5.58 MBytes  46.8 Mbits/sec
[ 19]  6.0- 7.0 sec  5.56 MBytes  46.6 Mbits/sec
[ 17]  6.0- 7.0 sec  5.56 MBytes  46.6 Mbits/sec
[ 18]  6.0- 7.0 sec  5.78 MBytes  48.5 Mbits/sec
[ 12]  6.0- 7.0 sec  5.61 MBytes  47.1 Mbits/sec
[  7]  6.0- 7.0 sec  5.79 MBytes  48.6 Mbits/sec
[ 20]  6.0- 7.0 sec  5.79 MBytes  48.6 Mbits/sec
[ 22]  6.0- 7.0 sec  5.78 MBytes  48.5 Mbits/sec
[ 21]  6.0- 7.0 sec  5.77 MBytes  48.4 Mbits/sec
[ 23]  6.0- 7.0 sec  5.75 MBytes  48.2 Mbits/sec
[ 11]  6.0- 7.0 sec  5.77 MBytes  48.4 Mbits/sec
[SUM]  6.0- 7.0 sec   114 MBytes   956 Mbits/sec
[ 24]  7.0- 8.0 sec  5.76 MBytes  48.4 Mbits/sec
[  5]  7.0- 8.0 sec  5.79 MBytes  48.6 Mbits/sec
[  8]  7.0- 8.0 sec  5.76 MBytes  48.4 Mbits/sec
[  6]  7.0- 8.0 sec  5.74 MBytes  48.1 Mbits/sec
[ 10]  7.0- 8.0 sec  5.72 MBytes  48.0 Mbits/sec
[ 14]  7.0- 8.0 sec  5.72 MBytes  48.0 Mbits/sec
[ 15]  7.0- 8.0 sec  5.71 MBytes  47.9 Mbits/sec
[ 13]  7.0- 8.0 sec  5.72 MBytes  48.0 Mbits/sec
[ 16]  7.0- 8.0 sec  5.61 MBytes  47.0 Mbits/sec
[  9]  7.0- 8.0 sec  5.62 MBytes  47.1 Mbits/sec
[ 19]  7.0- 8.0 sec  5.68 MBytes  47.6 Mbits/sec
[ 17]  7.0- 8.0 sec  5.64 MBytes  47.3 Mbits/sec
[ 18]  7.0- 8.0 sec  5.67 MBytes  47.6 Mbits/sec
[ 12]  7.0- 8.0 sec  5.62 MBytes  47.2 Mbits/sec
[  7]  7.0- 8.0 sec  5.67 MBytes  47.6 Mbits/sec
[ 20]  7.0- 8.0 sec  5.72 MBytes  47.9 Mbits/sec
[ 22]  7.0- 8.0 sec  5.71 MBytes  47.9 Mbits/sec
[ 21]  7.0- 8.0 sec  5.72 MBytes  48.0 Mbits/sec
[ 23]  7.0- 8.0 sec  5.69 MBytes  47.8 Mbits/sec
[ 11]  7.0- 8.0 sec  5.66 MBytes  47.5 Mbits/sec
[SUM]  7.0- 8.0 sec   114 MBytes   956 Mbits/sec
[ 24]  8.0- 9.0 sec  5.74 MBytes  48.1 Mbits/sec
[  5]  8.0- 9.0 sec  5.79 MBytes  48.5 Mbits/sec
[  8]  8.0- 9.0 sec  5.77 MBytes  48.4 Mbits/sec
[  6]  8.0- 9.0 sec  5.73 MBytes  48.0 Mbits/sec
[ 10]  8.0- 9.0 sec  5.69 MBytes  47.8 Mbits/sec
[ 14]  8.0- 9.0 sec  5.71 MBytes  47.9 Mbits/sec
[ 15]  8.0- 9.0 sec  5.72 MBytes  48.0 Mbits/sec
[ 13]  8.0- 9.0 sec  5.69 MBytes  47.7 Mbits/sec
[ 16]  8.0- 9.0 sec  5.63 MBytes  47.2 Mbits/sec
[  9]  8.0- 9.0 sec  5.62 MBytes  47.2 Mbits/sec
[ 19]  8.0- 9.0 sec  5.72 MBytes  48.0 Mbits/sec
[ 17]  8.0- 9.0 sec  5.68 MBytes  47.7 Mbits/sec
[ 18]  8.0- 9.0 sec  5.69 MBytes  47.8 Mbits/sec
[ 12]  8.0- 9.0 sec  5.59 MBytes  46.9 Mbits/sec
[  7]  8.0- 9.0 sec  5.69 MBytes  47.7 Mbits/sec
[ 20]  8.0- 9.0 sec  5.70 MBytes  47.8 Mbits/sec
[ 22]  8.0- 9.0 sec  5.71 MBytes  47.9 Mbits/sec
[ 21]  8.0- 9.0 sec  5.71 MBytes  47.9 Mbits/sec
[ 23]  8.0- 9.0 sec  5.68 MBytes  47.6 Mbits/sec
[ 11]  8.0- 9.0 sec  5.67 MBytes  47.6 Mbits/sec
[SUM]  8.0- 9.0 sec   114 MBytes   956 Mbits/sec
[ 24]  9.0-10.0 sec  5.67 MBytes  47.5 Mbits/sec
[ 24]  0.0-10.0 sec  58.1 MBytes  48.7 Mbits/sec
[ 24] Sent 42554 datagrams
[  5]  0.0-10.0 sec  58.4 MBytes  49.0 Mbits/sec
[  5] Sent 42553 datagrams
[  8]  0.0-10.0 sec  58.3 MBytes  48.9 Mbits/sec
[  8] Sent 42553 datagrams
[  6]  0.0-10.0 sec  57.9 MBytes  48.6 Mbits/sec
[  6] Sent 42553 datagrams
[ 10]  0.0-10.0 sec  57.8 MBytes  48.5 Mbits/sec
[ 10] Sent 42553 datagrams
[ 14]  0.0-10.0 sec  57.5 MBytes  48.2 Mbits/sec
[ 14] Sent 42553 datagrams
[ 15]  0.0-10.0 sec  57.2 MBytes  48.0 Mbits/sec
[ 15] Sent 42553 datagrams
[ 13]  0.0-10.0 sec  57.0 MBytes  47.8 Mbits/sec
[ 13] Sent 42553 datagrams
[ 16]  0.0-10.0 sec  56.6 MBytes  47.5 Mbits/sec
[ 16] Sent 42553 datagrams
[  9]  0.0-10.0 sec  56.4 MBytes  47.3 Mbits/sec
[  9] Sent 42553 datagrams
[ 19]  0.0-10.0 sec  56.4 MBytes  47.3 Mbits/sec
[ 19] Sent 42553 datagrams
[ 17]  0.0-10.0 sec  56.1 MBytes  47.0 Mbits/sec
[ 17] Sent 42553 datagrams
[ 18]  0.0-10.0 sec  57.2 MBytes  48.0 Mbits/sec
[ 18] Sent 42553 datagrams
[ 12]  0.0-10.0 sec  55.9 MBytes  46.9 Mbits/sec
[ 12] Sent 42552 datagrams
[  7]  0.0-10.0 sec  56.8 MBytes  47.6 Mbits/sec
[  7] Sent 42553 datagrams
[ 20]  0.0-10.0 sec  56.8 MBytes  47.6 Mbits/sec
[ 20] Sent 42553 datagrams
[ 22]  9.0-10.0 sec  5.69 MBytes  47.7 Mbits/sec
[ 22]  0.0-10.0 sec  56.7 MBytes  47.6 Mbits/sec
[ 22] Sent 42553 datagrams
[ 21]  9.0-10.0 sec  5.67 MBytes  47.6 Mbits/sec
[ 21]  0.0-10.0 sec  56.6 MBytes  47.5 Mbits/sec
[ 21] Sent 42553 datagrams
[ 23]  0.0-10.0 sec  56.6 MBytes  47.5 Mbits/sec
[ 23] Sent 42553 datagrams
[ 11]  9.0-10.0 sec  5.70 MBytes  47.8 Mbits/sec
[ 11]  0.0-10.0 sec  56.5 MBytes  47.4 Mbits/sec
[ 11] Sent 42553 datagrams
[SUM]  0.0-10.0 sec  1.11 GBytes   957 Mbits/sec
[ 12] Server Report:
[ 12]  0.0-10.0 sec  55.8 MBytes  46.7 Mbits/sec   0.066 ms 2759/42551 (6.5%)
[ 12]  0.0-10.0 sec  1 datagrams received out-of-order
[ 14] Server Report:
[ 14]  0.0-10.0 sec  57.4 MBytes  48.1 Mbits/sec   0.086 ms 1615/42552 (3.8%)
[ 14]  0.0-10.0 sec  1 datagrams received out-of-order
[ 16] Server Report:
[ 16]  0.0-10.0 sec  56.4 MBytes  47.2 Mbits/sec   0.080 ms 2352/42552 (5.5%)
[ 16]  0.0-10.0 sec  2 datagrams received out-of-order
[ 23] Server Report:
[ 23]  0.0-10.0 sec  56.0 MBytes  46.9 Mbits/sec   0.067 ms 2571/42552 (6%)
[ 23]  0.0-10.0 sec  1 datagrams received out-of-order
[  6] Server Report:
[  6]  0.0-10.0 sec  57.6 MBytes  48.2 Mbits/sec   0.076 ms 1492/42552 (3.5%)
[  6]  0.0-10.0 sec  3 datagrams received out-of-order
[ 13] Server Report:
[ 13]  0.0-10.0 sec  56.9 MBytes  47.6 Mbits/sec   0.069 ms 1977/42552 (4.6%)
[ 13]  0.0-10.0 sec  1 datagrams received out-of-order
[ 10] Server Report:
[ 10]  0.0-10.0 sec  57.4 MBytes  48.1 Mbits/sec   0.072 ms 1577/42552 (3.7%)
[ 10]  0.0-10.0 sec  5 datagrams received out-of-order
[ 15] Server Report:
[ 15]  0.0-10.0 sec  56.9 MBytes  47.6 Mbits/sec   0.068 ms 1963/42552 (4.6%)
[ 15]  0.0-10.0 sec  8 datagrams received out-of-order
[ 22] Server Report:
[ 22]  0.0-10.0 sec  56.5 MBytes  47.3 Mbits/sec   0.064 ms 2272/42552 (5.3%)
[ 22]  0.0-10.0 sec  1 datagrams received out-of-order
[ 19] Server Report:
[ 19]  0.0-10.0 sec  56.3 MBytes  47.1 Mbits/sec   0.079 ms 2396/42552 (5.6%)
[ 19]  0.0-10.0 sec  7 datagrams received out-of-order
[ 11] Server Report:
[ 11]  0.0-10.0 sec  56.3 MBytes  47.1 Mbits/sec   0.091 ms 2379/42551 (5.6%)
[ 11]  0.0-10.0 sec  1 datagrams received out-of-order
[ 24] Server Report:
[ 24]  0.0-10.0 sec  57.8 MBytes  48.3 Mbits/sec   0.086 ms 1359/42553 (3.2%)
[ 24]  0.0-10.0 sec  1 datagrams received out-of-order
[ 17] Server Report:
[ 17]  0.0-10.0 sec  55.8 MBytes  46.7 Mbits/sec   0.066 ms 2775/42552 (6.5%)
[ 17]  0.0-10.0 sec  3 datagrams received out-of-order
[ 21] Server Report:
[ 21]  0.0-10.0 sec  56.1 MBytes  47.0 Mbits/sec   0.063 ms 2546/42551 (6%)
[ 21]  0.0-10.0 sec  1 datagrams received out-of-order
[  8] Server Report:
[  8]  0.0-10.0 sec  57.9 MBytes  48.5 Mbits/sec   0.070 ms 1243/42552 (2.9%)
[  8]  0.0-10.0 sec  1 datagrams received out-of-order
[  5] Server Report:
[  5]  0.0-10.0 sec  58.1 MBytes  48.7 Mbits/sec   0.080 ms 1085/42552 (2.5%)
[  5]  0.0-10.0 sec  5 datagrams received out-of-order
[  7] Server Report:
[  7]  0.0-10.0 sec  56.6 MBytes  47.4 Mbits/sec   0.075 ms 2183/42552 (5.1%)
[  7]  0.0-10.0 sec  4 datagrams received out-of-order
[ 18] Server Report:
[ 18]  0.0-10.0 sec  57.1 MBytes  47.8 Mbits/sec   0.068 ms 1844/42552 (4.3%)
[ 18]  0.0-10.0 sec  4 datagrams received out-of-order
[  9] Server Report:
[  9]  0.0-10.0 sec  56.3 MBytes  47.1 Mbits/sec   0.073 ms 2410/42552 (5.7%)
[  9]  0.0-10.0 sec  4 datagrams received out-of-order
[ 20] Server Report:
[ 20]  0.0-10.0 sec  56.5 MBytes  47.3 Mbits/sec   0.053 ms 2265/42552 (5.3%)
[ 20]  0.0-10.0 sec  2 datagrams received out-of-order

Unix/Linux

Expand

title	Click here to expand the Ubuntu example...

Many Lunix and Unix distros will have iperf in official repositories. Make sure to install iperf2 (iperf), not iperf3, to have compatability with WiscNet's iPerf server.

Ubuntu - Install

Code Block

theme	Confluence

apt-cache search iperf | grep -i iperf
iperf - Internet Protocol bandwidth measuring tool
iperf3 - Internet Protocol bandwidth measuring tool

sudo apt-get install iperf

Ubuntu - Example

Code Block

theme	Confluence

iperf -c iperf.wiscnet.net -t 10 -P 20 -u -b 50m -i1

------------------------------------------------------------
Client connecting to iperf.wiscnet.net, UDP port 5001
Sending 1470 byte datagrams
UDP buffer size:  208 KByte (default)
------------------------------------------------------------
[ 21] local 10.0.10.105 port 33836 connected with 205.213.14.56 port 5001
[  5] local 10.0.10.105 port 39264 connected with 205.213.14.56 port 5001
[  4

Expand

title	Click here to expand sample results...

Look fro the SUM lines below as they show your current throughput.

No Format

~$ iperf -c iperf.wiscnet.net -p 5002 -b 1g -t30 -i 2 -P10
WARNING: option -b implies udp testing
------------------------------------------------------------
Client connecting to iperf.wiscnet.net, UDP port 5002
Sending 1470 byte datagrams
UDP buffer size:  208 KByte (default)
------------------------------------------------------------
[ 10] local 10.0.10.105 port 46265 connected with 205.213.14.56 port 5002
[  8] local 10.0.10.105 port 40293 connected with 205.213.14.56 port 5002
[  5] local 10.0.10.105 port 3805055180 connected with 205.213.14.56 port 50025001
[  6] local 10.0.10.105 port 41089 connected with 205.213.14.56 port 5001
[  3] local 10.0.10.105 port 4227348475 connected with 205.213.14.56 port 50025001
[  7] local 10.0.10.105 port 37402 connected with 205.213.14.56 port 5001
[  8] local 10.0.10.105 port 5258535544 connected with 205.213.14.56 port 50025001
[  9] local 10.0.10.105 port 3879238899 connected with 205.213.14.56 port 50025001
[ 11] local  310.0.10.105 port 55616 connected with 205.213.14.56 port 5001
[ 10] local 10.0.10.105 port 3821445343 connected with 205.213.14.56 port 50025001
[ 1112] local 10.0.10.105 port 6044452147 connected with 205.213.14.56 port 50025001
[  415] local 10.0.10.105 port 4965548943 connected with 205.213.14.56 port 50025001
[ 1213] local 10.0.10.105 port 5051155655 connected with 205.213.14.56 port 50025001
[ ID14] Interval       Transfer     Bandwidth
[  3]  0.0- 2.0 sec  22.7 MBytes  95.3 Mbits/sec
[ 10]  0.0- 2.0 sec  23.1 MBytes  96.9 Mbits/sec
[  8]  0.0- 2.0 sec  22.2 MBytes  93.1 Mbits/sec
[  5]  0.0- 2.0 sec  23.4 MBytes  98.4 Mbits/sec
[  6]  0.0- 2.0 sec  22.7 MBytes  95.2 Mbits/sec
[  7]  0.0- 2.0 sec  23.2 MBytes  97.1 Mbits/sec
[  9]  0.0- 2.0 sec  22.3 MBytes  93.7 Mbits/sec
[ 11]  0.0- 2.0 sec  23.1 MBytes  96.7 Mbits/sec
[  4]  0.0- 2.0 sec  22.7 MBytes  95.2 Mbits/sec
[ 12local 10.0.10.105 port 37942 connected with 205.213.14.56 port 5001
[ 16] local 10.0.10.105 port 44809 connected with 205.213.14.56 port 5001
[ 17] local 10.0.10.105 port 37378 connected with 205.213.14.56 port 5001
[ 18] local 10.0.10.105 port 60936 connected with 205.213.14.56 port 5001
[ 20] local 10.0.10.105 port 54895 connected with 205.213.14.56 port 5001
[ 19] local 10.0.10.105 port 47884 connected with 205.213.14.56 port 5001
[ 22] local 10.0.10.105 port 46874 connected with 205.213.14.56 port 5001
[ ID] Interval       Transfer     Bandwidth
[  5]  0.0- 21.0 sec  225.897 MBytes  9550.70 Mbits/sec
[SUM  4]  0.0- 21.0 sec   2285.97 MBytes   95750.0 Mbits/sec			<---
[  86]  20.0- 41.0 sec  225.397 MBytes  9350.50 Mbits/sec
[  53]  20.0- 41.0 sec  225.197 MBytes  9250.70 Mbits/sec
[  37]  20.0- 41.0 sec  225.996 MBytes  9650.20 Mbits/sec
[ 10 8]  20.0- 41.0 sec  235.096 MBytes  9650.50 Mbits/sec
[  69]  20.0- 41.0 sec  225.596 MBytes  9450.60 Mbits/sec
[  711]  20.0- 41.0 sec  235.097 MBytes  9650.70 Mbits/sec
[  910]  20.0- 41.0 sec  225.597 MBytes  9450.30 Mbits/sec
[ 1112]  20.0- 41.0 sec  235.097 MBytes  9650.40 Mbits/sec
[  415]  20.0- 41.0 sec  225.997 MBytes  9650.20 Mbits/sec
[ 1213]  20.0- 41.0 sec  235.097 MBytes  9650.70 Mbits/sec
[SUM 14]  20.0- 41.0 sec  5.97 227 MBytes   95450.0 Mbits/sec			<---
[  516]  40.0- 61.0 sec  225.397 MBytes  9350.60 Mbits/sec
[  717]  40.0- 61.0 sec  235.197 MBytes  9650.90 Mbits/sec
[  418]  40.0- 61.0 sec  235.197 MBytes  9650.80 Mbits/sec
[ 1220]  40.0- 61.0 sec  225.397 MBytes  9350.70 Mbits/sec
[ 1019]  40.0- 61.0 sec  235.497 MBytes  9850.30 Mbits/sec
[  822]  40.0- 61.0 sec  225.597 MBytes  9450.50 Mbits/sec
[  621]  40.0- 61.0 sec  225.997 MBytes  9650.01 Mbits/sec
[  9SUM]  40.0- 61.0 sec   21.5119 MBytes  901.400 MbitsGbits/sec
[  321]  41.0- 62.0 sec  235.397 MBytes  9750.50 Mbits/sec
[ 11 5]  41.0- 62.0 sec  235.097 MBytes  9650.31 Mbits/sec
[SUM  4]  41.0- 62.0 sec   2275.97 MBytes  50.1 954 Mbits/sec			<---
[  106]  61.0- 82.0 sec  225.897 MBytes  9550.51 Mbits/sec
[  73]  61.0- 82.0 sec  225.097 MBytes  9250.41 Mbits/sec
[  97]  61.0- 82.0 sec  215.797 MBytes  9150.01 Mbits/sec
[  8]  61.0- 82.0 sec  225.997 MBytes  9650.21 Mbits/sec
[  59]  61.0- 82.0 sec  235.397 MBytes  9750.61 Mbits/sec
[  611]  61.0- 82.0 sec  225.797 MBytes  9550.1 Mbits/sec
[  310]  61.0- 82.0 sec  225.897 MBytes  9550.71 Mbits/sec
[ 1112]  61.0- 82.0 sec  225.497 MBytes  9450.01 Mbits/sec
[  415]  61.0- 82.0 sec  235.597 MBytes  9850.70 Mbits/sec
[ 1213]  61.0- 82.0 sec  235.197 MBytes  9750.01 Mbits/sec
[SUM 14]  61.0- 82.0 sec   2275.97 MBytes   95350.1 Mbits/sec			<---
[  816]  81.0-10 2.0 sec  225.997 MBytes  9650.21 Mbits/sec
[  317]  81.0-10 2.0 sec  225.197 MBytes  9250.71 Mbits/sec
[ 1018]  81.0-10 2.0 sec  235.697 MBytes  9950.21 Mbits/sec
[  520]  81.0-10 2.0 sec  225.797 MBytes  9550.30 Mbits/sec
[  619]  81.0-10 2.0 sec  225.297 MBytes  9250.91 Mbits/sec
[  722]  81.0-10 2.0 sec  225.897 MBytes  9550.70 Mbits/sec
[  9SUM]  81.0-10 2.0 sec   23.4119 MBytes  981.300 MbitsGbits/sec
[ 1121]  82.0-10 3.0 sec  225.797 MBytes  9550.40 Mbits/sec
[  45]  82.0-10 3.0 sec  225.497 MBytes  9450.0 Mbits/sec
[  124]  82.0-10 3.0 sec  225.497 MBytes  9350.90 Mbits/sec
[SUM  6]  82.0-10 3.0 sec   2275.97 MBytes   95450.0 Mbits/sec			<---
[  73]  102.0-12 3.0 sec  235.297 MBytes  9750.20 Mbits/sec
[  117]  102.0-12 3.0 sec  235.597 MBytes  9850.70 Mbits/sec
[  48]  102.0-12 3.0 sec  225.297 MBytes  9350.20 Mbits/sec
[  109]  102.0-12 3.0 sec  215.797 MBytes  9150.0 Mbits/sec
[ 11] 8] 102.0-12 3.0 sec  225.996 MBytes  9550.90 Mbits/sec
[ 10] 5] 102.0-12 3.0 sec  235.597 MBytes  9850.60 Mbits/sec
[ 12] 6] 102.0-12 3.0 sec  225.697 MBytes  9450.90 Mbits/sec
[ 15] 9] 102.0-12 3.0 sec  225.297 MBytes  9350.31 Mbits/sec
[ 13] 3] 102.0-12 3.0 sec  225.997 MBytes  9650.20 Mbits/sec
[ 1214]  102.0-12 3.0 sec  225.497 MBytes  9450.10 Mbits/sec
[SUM 16]  102.0-12 3.0 sec  5.97 227 MBytes   95350.0 Mbits/sec			<---
[ 17] 5] 122.0-14 3.0 sec  225.497 MBytes  9350.90 Mbits/sec
[ 18] 9] 122.0-14 3.0 sec  225.197 MBytes  9250.90 Mbits/sec
[ 20] 4] 122.0-14 3.0 sec  235.997 MBytes   10050.1 Mbits/sec
[ 1019]  122.0-14 3.0 sec  225.997 MBytes  9650.0 Mbits/sec
[ 22] 8] 122.0-14 3.0 sec  225.697 MBytes  9450.70 Mbits/sec
[SUM]  6] 122.0-14 3.0 sec  23.1 119 MBytes  971.100 MbitsGbits/sec
[ 21] 7] 123.0-14 4.0 sec  225.097 MBytes  9250.30 Mbits/sec
[  35]  123.0-14 4.0 sec  225.697 MBytes  9550.0 Mbits/sec
[  114]  123.0-14 4.0 sec  225.897 MBytes  9550.50 Mbits/sec
[ 12 6]  123.0-14 4.0 sec  235.097 MBytes  9650.30 Mbits/sec
[SUM  3]  123.0-14 4.0 sec   2275.97 MBytes   95450.0 Mbits/sec			<---
[  87]  143.0-16 4.0 sec  225.597 MBytes  9450.20 Mbits/sec
[  58] 14 3.0-16 4.0 sec  235.497 MBytes  9850.0 Mbits/sec
[  79]  143.0-16 4.0 sec  225.697 MBytes  9450.70 Mbits/sec
[ 11] 9] 143.0-16 4.0 sec  235.297 MBytes  9750.41 Mbits/sec
[ 10] 4] 143.0-16 4.0 sec  235.197 MBytes  9750.10 Mbits/sec
[ 12] 14 3.0-16 4.0 sec  225.297 MBytes  9350.0 Mbits/sec
[ 1015]  143.0-16 4.0 sec  235.197 MBytes  9650.80 Mbits/sec
[ 13] 6] 143.0-16 4.0 sec  225.897 MBytes  9550.80 Mbits/sec
[ 14]  3] 14.0-16 4.0 sec  225.497 MBytes  9350.80 Mbits/sec
[ 1116]  143.0-16 4.0 sec  225.295 MBytes  9249.9 Mbits/sec
[SUM 17]  143.0-16 4.0 sec   2275.97 MBytes   95450.0 Mbits/sec			<---
[ 1018]  163.0-18 4.0 sec  225.995 MBytes  9649.09 Mbits/sec
[ 20] 8] 163.0-18 4.0 sec  225.897 MBytes  9550.80 Mbits/sec
[ 19] 5] 163.0-18 4.0 sec  235.397 MBytes  9750.90 Mbits/sec
[ 22] 6] 163.0-18 4.0 sec  225.697 MBytes  9450.90 Mbits/sec
[SUM]  7] 163.0-18 4.0 sec   22.1119 MBytes  921.800 MbitsGbits/sec
[ 21] 9] 164.0-18 5.0 sec  235.197 MBytes  9750.0 Mbits/sec
[  35]  164.0-18 5.0 sec  235.297 MBytes  9750.31 Mbits/sec
[  114]  164.0-18 5.0 sec  225.097 MBytes  9250.1 Mbits/sec
[  46] 16 4.0-18 5.0 sec  225.297 MBytes  9350.01 Mbits/sec
[  123]  164.0-18 5.0 sec  225.897 MBytes  9550.81 Mbits/sec
[SUM  7]  164.0-18 5.0 sec   2275.97 MBytes   953 Mbits/sec			<---50.0 Mbits/sec
[ 10 8]  184.0-20 5.0 sec  225.497 MBytes  9350.81 Mbits/sec
[  89]  184.0-20 5.0 sec  225.397 MBytes  9350.50 Mbits/sec
[ 11] 5] 184.0-20 5.0 sec  225.897 MBytes  9550.60 Mbits/sec
[ 10] 6] 184.0-20 5.0 sec  225.597 MBytes  9450.61 Mbits/sec
[ 12] 7] 184.0-20 5.0 sec  215.997 MBytes  9250.1 Mbits/sec
[ 15] 9] 184.0-20 5.0 sec  235.897 MBytes  9950.71 Mbits/sec
[ 13] 3] 184.0-20 5.0 sec  225.997 MBytes  9650.10 Mbits/sec
[ 1114]  184.0-20 5.0 sec  225.697 MBytes  9450.80 Mbits/sec
[ 16]  4] 18.0-20 5.0 sec  225.797 MBytes  9550.01 Mbits/sec
[ 1217]  184.0-20 5.0 sec  235.597 MBytes  9850.60 Mbits/sec
[SUM 18]  184.0-20 5.0 sec  5.97 227 MBytes   95450.1 Mbits/sec			<---
[ 1020]  204.0-22 5.0 sec  225.597 MBytes  9450.30 Mbits/sec
[ 19] 8] 204.0-22 5.0 sec  225.997 MBytes  9550.90 Mbits/sec
[ 22] 5] 204.0-22 5.0 sec  225.597 MBytes  9450.41 Mbits/sec
[SUM]  6] 204.0-22 5.0 sec   23.0119 MBytes  961.600 MbitsGbits/sec
[ 21] 7] 205.0-22 6.0 sec  225.797 MBytes  9550.41 Mbits/sec
[  95]  205.0-22 6.0 sec  235.097 MBytes  9650.50 Mbits/sec
[  34] 20 5.0-22 6.0 sec  225.897 MBytes  9550.60 Mbits/sec
[  116]  205.0-22 6.0 sec  225.597 MBytes  9450.30 Mbits/sec
[  43] 20 5.0-22 6.0 sec  225.497 MBytes  9350.80 Mbits/sec
[  127]  205.0-22 6.0 sec  235.097 MBytes  9650.41 Mbits/sec
[SUM  8]  205.0-22 6.0 sec   2275.97 MBytes   95350.0 Mbits/sec			<---
[  59]  225.0-24 6.0 sec  225.297 MBytes  9350.21 Mbits/sec
[ 1011]  225.0-24 6.0 sec  235.297 MBytes  9750.20 Mbits/sec
[ 10] 8] 225.0-24 6.0 sec  235.097 MBytes  9650.50 Mbits/sec
[ 12] 6] 225.0-24 6.0 sec  225.897 MBytes  9550.60 Mbits/sec
[ 15] 7] 225.0-24 6.0 sec  225.597 MBytes  9450.20 Mbits/sec
[ 13] 9] 225.0-24 6.0 sec  225.897 MBytes  9550.71 Mbits/sec
[ 14] 3] 225.0-24 6.0 sec  225.697 MBytes  9450.61 Mbits/sec
[ 1116] 22 5.0-24 6.0 sec  225.897 MBytes  9550.60 Mbits/sec
[  417]  225.0-24 6.0 sec  225.597 MBytes  9450.51 Mbits/sec
[ 1218] 22 5.0-24 6.0 sec  235.297 MBytes  9750.30 Mbits/sec
[SUM 20]  225.0-24 6.0 sec  5.97 228 MBytes   95450.1 Mbits/sec			<---
[ 19] 7] 245.0-26 6.0 sec  235.397 MBytes  9750.81 Mbits/sec
[ 22] 4] 245.0-26 6.0 sec  235.497 MBytes  9850.0 Mbits/sec
[SUM] 10] 245.0-26 6.0 sec   23.1119 MBytes  971.000 MbitsGbits/sec
[ 21] 8] 246.0-26 7.0 sec  225.597 MBytes  9450.40 Mbits/sec
[  5]  246.0-26 7.0 sec  215.897 MBytes  9150.40 Mbits/sec
[  64] 24 6.0-26 7.0 sec  225.897 MBytes  9550.50 Mbits/sec
[  96]  246.0-26 7.0 sec  225.997 MBytes  9650.10 Mbits/sec
[  3]  246.0-26 7.0 sec  225.697 MBytes  9450.80 Mbits/sec
[  117]  246.0-26 7.0 sec  225.397 MBytes  9350.60 Mbits/sec
[ 12 8]  246.0-26 7.0 sec  225.597 MBytes  9450.20 Mbits/sec
[SUM  9]  246.0-26 7.0 sec  5.97 227 MBytes   95350.0 Mbits/sec			<---
[ 11] 7] 266.0-28 7.0 sec  225.997 MBytes  9650.21 Mbits/sec
[  410] 26 6.0-28 7.0 sec  235.296 MBytes  9750.40 Mbits/sec
[ 1012]  266.0-28 7.0 sec  225.897 MBytes  9550.80 Mbits/sec
[ 15] 8] 266.0-28 7.0 sec  225.597 MBytes  9450.30 Mbits/sec
[ 13] 5] 266.0-28 7.0 sec  225.897 MBytes  9550.70 Mbits/sec
[ 14]  6] 26.0-28 7.0 sec  225.497 MBytes  9350.80 Mbits/sec
[ 16] 9] 266.0-28 7.0 sec  225.597 MBytes  9450.60 Mbits/sec
[ 17] 3] 266.0-28 7.0 sec  235.297 MBytes  9750.10 Mbits/sec
[ 1118]  266.0-28 7.0 sec  225.797 MBytes  9550.30 Mbits/sec
[ 1220] 26 6.0-28 7.0 sec  225.297 MBytes  9350.20 Mbits/sec
[SUM 19]  266.0-28 7.0 sec   2275.97 MBytes  50.0 953 Mbits/sec			<---
[ 1022]  286.0-30 7.0 sec  225.597 MBytes  9450.31 Mbits/sec
[ 10SUM]  06.0-30 7.0 sec   343119 MBytes  951.900 MbitsGbits/sec
[ 1021] Sent 244637 datagrams
[  8] 28 7.0-30 8.0 sec  225.897 MBytes  9550.61 Mbits/sec
[  85]  07.0-30 8.0 sec   3405.97 MBytes  9450.91 Mbits/sec
[  84] Sent 242236 datagrams
[  5] 28 7.0-30 8.0 sec  225.496 MBytes  9450.0 Mbits/sec
[  56]  07.0-30 8.0 sec   3415.97 MBytes  9550.31 Mbits/sec
[  53] Sent 243249 datagrams
[  6] 28 7.0-30 8.0 sec  225.296 MBytes  9350.10 Mbits/sec
[  67]  07.0-30 8.0 sec   3405.97 MBytes  9550.0 Mbits/sec
[  68] Sent 242440 datagrams
[  7] 28.0-30 8.0 sec  225.197 MBytes  9250.61 Mbits/sec
[  79]  07.0-30 8.0 sec   3405.97 MBytes  9450.91 Mbits/sec
[  711] Sent 242176 datagrams
[  9] 28 7.0-30 8.0 sec  235.797 MBytes  9950.40 Mbits/sec
[  910]  07.0-30 8.0 sec   3415.97 MBytes  9550.31 Mbits/sec
[  912] Sent 243245 datagrams
[  3] 28 7.0-30 8.0 sec  245.197 MBytes   10150.1 Mbits/sec
[  315]  07.0-30 8.0 sec   3435.97 MBytes  9550.90 Mbits/sec
[  313] Sent 244785 datagrams
[ 11] 28 7.0-30 8.0 sec  235.397 MBytes  9750.90 Mbits/sec
[ 1114]  07.0-30 8.0 sec   3415.97 MBytes  9550.30 Mbits/sec
[ 1116] Sent 243107 datagrams
[  4] 28 7.0-30 8.0 sec  225.197 MBytes  9250.50 Mbits/sec
[  417]  07.0-30 8.0 sec  5.97 342 MBytes  9550.70 Mbits/sec
[  418] Sent 244166 datagrams
[ 12] 28 7.0-30 8.0 sec  225.397 MBytes  9350.41 Mbits/sec
[SUM 20]  287.0-30 8.0 sec   2275.97 MBytes   95450.0 Mbits/sec			<---
[ 1219]  07.0-30 8.0 sec   3415.97 MBytes  9550.30 Mbits/sec
[ 1222] Sent 243057 datagrams
[SUM]  0 7.0-30 8.0 sec  35.3397 GBytesMBytes   95450.0 Mbits/sec			<---
[  4] Server Report:
[  4
[SUM]  07.0-30 8.0 sec   341119 MBytes  951.400 MbitsGbits/sec
[ 21]  8.0.853 ms  829/244165 (0.34%)- 9.0 sec  5.97 MBytes  50.0 Mbits/sec
[  45]  08.0-30 9.0 sec  5.97 1MBytes datagrams received out-of-order50.0 Mbits/sec
[ 11] Server Report:
[ 11 4]  08.0-30 9.0 sec   3395.97 MBytes  9450.91 Mbits/sec
[  6]  8.0.631 ms  986/243106 (0.41%)
[ 11]  0.0-30- 9.0 sec  5.97 MBytes  50.0 Mbits/sec
[  3]  8.0- 9.0 sec  15.97 datagramsMBytes received out-of-order
[  3] Server Report: 50.0 Mbits/sec
[  37]  08.0-30 9.0 sec   3415.97 MBytes  9550.21 Mbits/sec
[  8]  8.0- 9.0 sec  5.70497 msMBytes 1840/244784 (0.75%)50.0 Mbits/sec
[  39]  08.0-30 9.0 sec  5.97 9MBytes datagrams received out-of-order50.0 Mbits/sec
[  811] Server Report:
[  8]  0.0-30 9.0 sec   3385.97 MBytes  9450.40 Mbits/sec   0.689 ms 1277/242235 (0.53%)
[  810]  08.0-30 9.0 sec  15.97 datagramsMBytes received out-of-order
[ 12] Server Report: 50.1 Mbits/sec
[ 12]  08.0-30 9.0 sec   3395.97 MBytes  9450.80 Mbits/sec   0.478 ms 1084/243056 (0.45%)
[ 1215]  08.0-30 9.0 sec  15.97 datagramsMBytes received out-of-order
[  9] Server Report: 50.1 Mbits/sec
[  913]  08.0-30 9.0 sec  5.97 339 MBytes  9450.81 Mbits/sec   0.894 ms 1239/243244 (0.51%)
[  914]  08.0-30 9.0 sec  75.97 datagramsMBytes received out-of-order
[  6] Server Report: 50.1 Mbits/sec
[  616]  08.0-30 9.0 sec  5.97 337 MBytes  9450.31 Mbits/sec   0.549 ms 1716/242439 (0.71%)
[  617]  08.0-30 9.0 sec  35.97 datagramsMBytes received out-of-order
[  7] Server Report: 50.1 Mbits/sec
[  718]  08.0-30 9.0 sec   3385.96 MBytes  9450.50 Mbits/sec
[ 20]  8.0- 9.0 sec  5.58197 msMBytes 1014/242175 (0.42%)50.1 Mbits/sec
[  719]  08.0-30 9.0 sec  15.97 datagramsMBytes received out-of-order
[  5] Server Report: 50.1 Mbits/sec
[  522]  08.0-30 9.0 sec   3405.97 MBytes  9550.0 Mbits/sec
[SUM]  8.0- 0.496 ms  914/243248 (0.38%)
[  5]  0.0-309.0 sec   119 MBytes  1.00 Gbits/sec
[ 21]  9.0-10.0 sec  15.96 datagramsMBytes received out-of-order
[ 10] Server Report: 50.0 Mbits/sec
[ 1021]  0.0-3010.0 sec   34259.6 MBytes  9550.60 Mbits/sec
[ 21] Sent 0.549 ms  702/244636 (0.29%)42549 datagrams
[ 10 5]  0.0-3010.0 sec  59.6 3MBytes datagrams received out-of-order

iperf.ipv6.wiscnet.net runs a v6 TCP Iperf server on port 5003

    iperf -V -c iperf.ipv6.wiscnet.net -p 5003 -i2

iperf.ipv6.wiscnet.net runs a v6 UDP Iperf server on port 5004

    iperf -V -c iperf.ipv6.wiscnet.net -p 5004 -i2 -u

TCP vs UDP testing

Iperf uses TCP by default. TCP has built in congestion avoidance. If TCP detects any packet loss, it assumes that the link capacity has been reached, and it slows down. This works very well, unless there is packet loss caused by something other than congestion. If there is packet loss due to errors, TCP will back off even if there is plenty of capacity. iperf allows TCP to send as fast as it can, which generally works to fill a clean, low latency link with packets. If a path is not clean/error free or has high latency, TCP will have a difficult time filling it. For testing higher capacity links and for links with higher latency, you will want to adjust the window size (-w option). See the KB article on TCP performance for more background.

By using the -u option, you have told iperf to use UDP packets, rather than TCP. UDP has no built in congestion avoidance, and iperf doesn't implement it either. When doing a UDP test, iperf requires that the bandwidth of the test be specified. If it isn't, it defaults to 1Mb/s. You can use the -b option to specify bandwidth to test. iperf will then send packets at the request rate for the requested period of time. The other end measures how many packets are received vs how many were sent and reports its results.

Bidirectional tests

When you use the -d or -r options for bidirectional testing, you may need to pick a port other than the default [5001] as the server is listening on port 5001. In the below examples, I random ports above 1024 were chosen.

We found that using the same port (with the -L) option in rapid succession doesn't seem to work.

The simultaneous test results may be difficult to read. It looks like only TCP is working. UDP doesn't appear to be working even after upgrading to iperf-2.0.4 [there were supposed to be some bug fixes]. It appears to be a problem in the official distribution according to recent ubuntu forums.

If you do not pick a port it will fail:

No Format
C:\>iperf -c iperf.wiscnet.net -i1 -d bind failed: Permission denied

Simultaneous, local port (-L) 20000:

No Format

C:\>iperf -c iperf.wiscnet.net -i1 -d -L 20000 ------------------------------------------------------------ Server listening on TCP port 20000 TCP window size: 8.00 KByte (default) ------------------------------------------------------------ ------------------------------------------------------------ Client connecting to iperf.wiscnet.net, TCP port 5001 TCP window size: 8.00 KByte (default) ------------------------------------------------------------ [1848] local 146.151.208.16 port 2242 connected with iperf.wiscnet.net port 5001 [1820] local 146.151.208.16 port 20000 connected with iperf.wiscnet.net port 20000 [ ID] Interval Transfer Bandwidth [1848] 0.0- 1.0 sec 1.03 MBytes 8.65 Mbits/sec [1820] 0.0- 1.0 sec 1.05 MBytes 8.83 Mbits/sec [1848] 1.0- 2.0 sec 1.09 MBytes 9.11 Mbits/sec [1820] 1.0- 2.0 sec 911 KBytes 7.46 Mbits/sec [1848] 2.0- 3.0 sec 976 KBytes 8.00 Mbits/sec [1820] 2.0- 3.0 sec 1.05 MBytes 8.79 Mbits/sec [1820] 3.0- 4.0 sec 1.33 MBytes 11.1 Mbits/sec [1848] 3.0- 4.0 sec 672 KBytes 5.51 Mbits/sec [1848] 4.0- 5.0 sec 712 KBytes 5.83 Mbits/sec [1820] 4.0- 5.0 sec 1.38 MBytes 11.5 Mbits/sec [1848] 5.0- 6.0 sec 624 KBytes 5.11 Mbits/sec [1820] 5.0- 6.0 sec 1.42 MBytes 11.9 Mbits/sec [1848] 6.0- 7.0 sec 584 KBytes 4.78 Mbits/sec [1820] 6.0- 7.0 sec 1.53 MBytes 12.9 Mbits/sec [1848] 7.0- 8.0 sec 832 KBytes 6.82 Mbits/sec [1820] 7.0- 8.0 sec 1.26 MBytes 10.5 Mbits/sec [1848] 8.0- 9.0 sec 616 KBytes 5.05 Mbits/sec [1820] 8.0- 9.0 sec 1.49 MBytes 12.5 Mbits/sec [1848] 9

50.0 Mbits/sec
[  5] Sent 42548 datagrams
[  4]  0.0-10.0 sec  59.6 MBytes  50.0 Mbits/sec
[  4] Sent 42547 datagrams
[  6]  0.0-10.0 sec  59.6 MBytes  50.0 Mbits/sec
[  6] Sent 42549 datagrams
[  3]  0.0-10.0 sec  59.6 MBytes  50.0 Mbits/sec
[  3] Sent 42547 datagrams
[  7]  0.0-10.0 sec  59.6 MBytes  50.0 Mbits/sec
[  7] Sent 42549 datagrams
[  8]  0.0-10.0 sec  59.6 MBytes  50.0 Mbits/sec
[  8] Sent 42549 datagrams
[  9]  0.0-10.0 sec  59.6 MBytes  50.0 Mbits/sec
[  9] Sent 42550 datagrams
[ 11]  0.0-10.0 sec  59.6 MBytes  50.0 Mbits/sec
[ 11] Sent 42547 datagrams
[ 10]  0.0-10.0 sec  59.7 MBytes  50.0 Mbits/sec
[ 10] Sent 42551 datagrams
[ 12]  0.0-10.0 sec  59.7 MBytes  50.0 Mbits/sec
[ 12] Sent 42551 datagrams
[ 15]  0.0-10.0 sec  59.7 MBytes  50.0 Mbits/sec
[ 15] Sent 42551 datagrams
[ 13]  0.0-10.0 sec  59.7 MBytes  50.0 Mbits/sec
[ 13] Sent 42551 datagrams
[ 14]  0.0-10.0 sec  59.7 MBytes  50.0 Mbits/sec
[ 14] Sent 42552 datagrams
[ 16]  0.0-10.0 sec  59.6 MBytes  50.0 Mbits/sec
[ 16] Sent 42538 datagrams
[ 17]  0.0-10.0 sec  59.6 MBytes  50.0 Mbits/sec
[ 17] Sent 42547 datagrams
[ 18]  0.0-10.0 sec  59.6 MBytes  50.0 Mbits/sec
[ 18] Sent 42541 datagrams
[ 20]  0.0-10.0 sec  59.7 MBytes  50.0 Mbits/sec
[ 20] Sent 42553 datagrams
[ 19]  0.0-10.0 sec  59.7 MBytes  50.0 Mbits/sec
[ 19] Sent 42553 datagrams
[ 22]  0.0-10.0 sec  59.7 MBytes  50.0 Mbits/sec
[ 22] Sent 42553 datagrams
[SUM]  0.0-10.0 sec  1.17 GBytes  1.00 Gbits/sec
[  5] Server Report:
[  5]  0.0-10.0 sec  58.1 MBytes  48.7 Mbits/sec   0.173 ms 1100/42547 (2.6%)
[  5]  0.0-10.0 sec  8 datagrams received out-of-order
[  3] Server Report:
[  3]  0.0-10.0 sec  57.6 MBytes  48.2 Mbits/sec   0.156 ms 1473/42546 (3.5%)
[  3]  0.0-10.0 sec  4 datagrams received out-of-order
[ 13] Server Report:
[ 13]  0.0-10.0 sec  56.3 MBytes  47.2 Mbits/sec   0.164 ms 2368/42550 (5.6%)
[ 13]  0.0-10.0 sec  3 datagrams received out-of-order
[  9] Server Report:
[  9]  0.0-10.0 sec  57.1 MBytes  47.8 Mbits/sec   0.153 ms 1826/42549 (4.3%)
[  9]  0.0-10.0 sec  2 datagrams received out-of-order
[ 15] Server Report:
[ 15]  0.0-10.0 sec  56.0 MBytes  46.9 Mbits/sec   0.148 ms 2596/42550 (6.1%)
[ 15]  0.0-10.0 sec  5 datagrams received out-of-order
[ 10] Server Report:
[ 10]  0.0-10.0 sec  56.9 MBytes  47.6 Mbits/sec   0.161 ms 1971/42550 (4.6%)
[ 10]  0.0-10.0 sec  2 datagrams received out-of-order
[  7] Server Report:
[  7]  0.0-10.0 sec  57.1 MBytes  47.8 Mbits/sec   0.161 ms 1827/42547 (4.3%)
[  7]  0.0-10.0 sec  1 datagrams received out-of-order
[ 16] Server Report:
[ 16]  0.0-10.0 sec  55.7 MBytes  46.7 Mbits/sec   0.212 ms 2770/42537 (6.5%)
[ 16]  0.0-10.0 sec  11 datagrams received out-of-order
[ 17] Server Report:
[ 17]  0.0-10.0 sec  55.8 MBytes  46.7 Mbits/sec   0.159 ms 2756/42546 (6.5%)
[ 17]  0.0-10.0 sec  4

584 KBytes 4.78 Mbits/sec [1820] 9

datagrams received out-of-order
[ 21] Server Report:
[ 21]  0.0-10.0 sec

1

57.

51

5 MBytes

12

48.

7

1 Mbits/sec   0.178 ms 1546/42548 (3.6%)
[

ID

21]

Interval

 0.0-10.0 sec  1 datagrams

Transfer Bandwidth [1848

received out-of-order
[ 22] Server Report:
[ 22]  0.0-10.0 sec

7

56.

59

9 MBytes  47.6

.34

 Mbits/sec   0.204 ms 1969/42552 (4.6%)
[

1820

 22]  0.0-10.

1

0 sec  13

.1

MBytes

datagrams

10.9 Mbits/sec

...

No Format

C:\Documents and Settings\m7h>iperf -c iperf.wiscnet.net -i1 -r -L 60000 ------------------------------------------------------------ Server listening on TCP port 60000 TCP window size: 8.00 KByte (default) ------------------------------------------------------------ ------------------------------------------------------------ Client connecting to iperf.wiscnet.net, TCP port 5001 TCP window size: 8.00 KByte (default) ------------------------------------------------------------ [1848] local 146.151.208.16 port 2365 connected with iperf.wiscnet.net port 5001 [ ID] Interval Transfer Bandwidth [1848] 0.0- 1.0 sec 2.02 MBytes 17.0 Mbits/sec [1848] 1.0- 2.0 sec 1.91 MBytes 16.1 Mbits/sec [1848] 2.0- 3.0 sec 1.92 MBytes 16.1 Mbits/sec [1848] 3.0- 4.0 sec 1.92 MBytes 16.1 Mbits/sec [1848] 4.0- 5.0 sec 1.92 MBytes 16.1 Mbits/sec [1848] 5.0- 6.0 sec 1.95 MBytes 16.3 Mbits/sec [1848] 6.0- 7.0 sec 1.98 MBytes 16.6 Mbits/sec [1848] 7.0- 8.0 sec 1.95 MBytes 16.4 Mbits/sec [1848] 8.0- 9.0 sec 1.89 MBytes 15.9 Mbits/sec [1848] 9.0-10.0 sec 2.04 MBytes 17.1 Mbits/sec [1848

received out-of-order
[  4] Server Report:
[  4]  0.0-10.0 sec  57.3 MBytes  48.0 Mbits/sec   0.178 ms 1656/42545 (3.9%)
[  4]  0.0-10.0 sec  10 datagrams received out-of-order
[  8] Server Report:
[  8]  0.0-10.0 sec  57.2 MBytes  47.9 Mbits/sec   0.159 ms 1763/42548 (4.1%)
[  8]  0.0-10.0 sec  1 datagrams received out-of-order
[  6] Server Report:
[  6]  0.0-10.0 sec  57.3 MBytes  48.0 Mbits/sec   0.170 ms 1644/42548 (3.9%)
[  6]  0.0-10.0 sec  5 datagrams received out-of-order
[ 11] Server Report:
[ 11]  0.0-10.0 sec  58.6 MBytes  49.1 Mbits/sec   0.160 ms  736/42546 (1.7%)
[ 11]  0.0-10.0 sec  2 datagrams received out-of-order
[ 14] Server Report:
[ 14]  0.0-10.0 sec  56.2 MBytes  47.0 Mbits/sec   0.180 ms 2481/42551 (5.8%)
[ 14]  0.0-10.0 sec  5 datagrams received out-of-order
[ 20] Server Report:
[ 20]  0.0-10.0 sec  55.8 MBytes  46.7 Mbits/sec   0.211 ms 2736/42552 (6.4%)
[ 20]  0.0-10.0 sec  2 datagrams received out-of-order
[ 18] Server Report:
[ 18]  0.0-10.0 sec  56.0 MBytes  46.9 Mbits/sec   0.213 ms 2582/42540 (6.1%)
[ 18]  0.0-10.0 sec  10 datagrams received out-of-order
[ 19] Server Report:
[ 19]  0.0-10.0 sec

19

55.

5

6 MBytes

16

46.

4

6 Mbits/sec

[1824]

local

146.151.208.16 port 60000 connected with iperf.wiscnet.net port 60000 [ ID] Interval Transfer Bandwidth [1824

0.215 ms 2887/42552 (6.8%)
[ 19]  0.0-10.0 sec  9 datagrams received out-of-order
[ 12] Server Report:
[ 12]  0.0-

1

10.0 sec

2

56.

22

8 MBytes

18.6 Mbits/sec [1824] 1.0- 2

47.5 Mbits/sec   0.200 ms 2048/42550 (4.8%)
[ 12]  0.0-10.0 sec

2.18 MBytes 18.3 Mbits/sec [1824] 2.0- 3.0 sec 2.17 MBytes 18.2 Mbits/sec [1824] 3.0- 4.0 sec 2.22 MBytes 18.6 Mbits/sec [1824] 4.0- 5.0 sec 2.01 MBytes 16.9 Mbits/sec [1824] 5.0- 6.0 sec 2.16 MBytes 18.1 Mbits/sec [1824] 6.0- 7.0 sec 2.09 MBytes 17.5 Mbits/sec [1824] 7.0- 8.0 sec 2.07 MBytes 17.4 Mbits/sec [1824] 8.0- 9.0 sec 2.16 MBytes 18.1 Mbits/sec [1824] 9.0-10.0 sec 2.13 MBytes 17.9 Mbits/sec [1824] 0.0-10.1 sec 21.6 MBytes 17.9 Mbits/sec

1 datagrams received out-of-order

BadgerNet Overview

Info
The overview portion of this document has been created by BadgerNet / AT&T and edited by WiscNet. Its intent is to explain the requirements needed in order to procure accurate circuit testing results

Internet speed tests results may be impacted by several variables, including

Tool used to test
Location of testing laptop/PC in the network
Time of day when test is run

Speed Testing Tools

Most of our members test their internet connection speeds using online browser based tests against servers hosted somewhere on the Internet, for example, http://speedtest.wiscnet.net/ . These tests work fine for low bandwidth internet services but don’t scale well for high speed internet connections. In order to get an accurate speed test a different testing tool like iperf should be used.

Location of testing laptop/PC in the network

Location of the testing PC/Laptop is critical for accurate test results. Note, from the diagram below, that location D is the best place to test your Internet speed from. The reliability of test results go down as we move the test point to C, B and A.

The configuration and capacity of the laptop is equally critical for the accuracy of circuit testing. Please ensure your laptop network cards and configuration are Gig/Capable.

Time of Day

Browser-based speed test results can also vary based on time of day, depending on the bandwidth consumed by the site users at the time the tests are run. For example, if a site has a 100Mbps connection and the users at the site are already consuming 60Mbps download and 25 Mbps upload sustained bandwidth for their business use, the test results will only show 40Mbps download and 75Mbps upload speeds. Therefore, it is recommended that these tests are run before and after business hours if you are using a browser base testing tool.

Mid-day Testing

Some WiscNet members desire to run speed test during business hours to see if they are getting full bandwidth during the day. In others instances, WiscNet will require the test to by-pass any LAN equipment in order to isolate the testing entirely to the circuit. Note that an accurate mid-day test with iperf will be service impacting. In order to run an accurate test during the day, a test window with be scheduled with WiscNet and in some cases with AT&T and WiscNet. The test will entail disconnecting the red cable, as shown in the drawing below, and connecting a laptop to the juniper switch at point D, thus effectively isolating the WAN from the site LAN. Disconnecting the red cable will disrupt service for the site users.

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Key

WiscNet hosted Speedtest.net

WiscNet hosted IPERF

Examples

Preparation

Web Browser based speed test

WiscNet-hosted iperf

Unidirectional UDP 1Gbps circuit test

Command

Results

Bidirectional UDP 1Gbps circuit test

Command

iperf Server

iperf Installation

Microsoft Windows

Apple macOS

Unix/Linux

TCP vs UDP testing

Bidirectional tests

BadgerNet Overview

Speed Testing Tools

Location of testing laptop/PC in the network

Time of Day

Mid-day Testing