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Table of Content Zone

Table of Contents

WiscNet hosted

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speedtest.net

  • For a quick and easy

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  • testing, you may use to use

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Image Added

WiscNet hosted

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Iperf

  • Iperf is a commonly used network testing tool to help measure network throughput.

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  • Iperf is an open source tool

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  • . There are clients for Windows, Mac, Linux, Bsd, etc

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  • .
  • Iperf operates where one end is the client, the other is the server. WiscNet runs an

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  • Iperf version 2 server in Eau Claire, WI

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  • .  
  • The server is restricted to WiscNet IP addresses. 

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  • Iperf2 and iperf3 are incompatible
  • iperf.wiscnet.net runs a TCP Iperf server on the default port (5001)

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

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titleClick here to expand sample results...

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

  • 5004

Some common Iperf flags

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

FlagDetailsExample
-cClient mode-c
-tTime to run the test in seconds-t 30
-PNumber of parallel connections-P 2
-uUDP (default is TCP)-u
-bBandwidth per thread
-b 250m
-iInterval between bandwidth reports in seconds-i 1
-L
Listen on port-L 6001
-r
bidirectional test-r


Examples

Unidirectional 1Gbps circuit test

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 38050 connected with 205.213.14.56 port 5002
[  6] local 10.0.10.105 port 42273 connected with 205.213.14.56 port 5002
[  7] local 10.0.10.105 port 52585 connected with 205.213.14.56 port 5002
[  9] local 10.0.10.105 port 38792 connected with 205.213.14.56 port 5002
[  3] local 10.0.10.105 port 38214 connected with 205.213.14.56 port 5002
[ 11] local 10.0.10.105 port 60444 connected with 205.213.14.56 port 5002
[  4] local 10.0.10.105 port 49655 connected with 205.213.14.56 port 5002
[ 12] local 10.0.10.105 port 50511 connected with 205.213.14.56 port 5002
[ ID] 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
[ 12]  0.0- 2.0 sec  22.8 MBytes  95.7 Mbits/sec
[SUM]  0.0- 2.0 sec   228 MBytes   957 Mbits/sec			<---
[  8]  2.0- 4.0 sec  22.3 MBytes  93.5 Mbits/sec
[  5]  2.0- 4.0 sec  22.1 MBytes  92.7 Mbits/sec
[  3]  2.0- 4.0 sec  22.9 MBytes  96.2 Mbits/sec
[ 10]  2.0- 4.0 sec  23.0 MBytes  96.5 Mbits/sec
[  6]  2.0- 4.0 sec  22.5 MBytes  94.6 Mbits/sec
[  7]  2.0- 4.0 sec  23.0 MBytes  96.7 Mbits/sec
[  9]  2.0- 4.0 sec  22.5 MBytes  94.3 Mbits/sec
[ 11]  2.0- 4.0 sec  23.0 MBytes  96.4 Mbits/sec
[  4]  2.0- 4.0 sec  22.9 MBytes  96.2 Mbits/sec
[ 12]  2.0- 4.0 sec  23.0 MBytes  96.7 Mbits/sec
[SUM]  2.0- 4.0 sec   227 MBytes   954 Mbits/sec			<---
[  5]  4.0- 6.0 sec  22.3 MBytes  93.6 Mbits/sec
[  7]  4.0- 6.0 sec  23.1 MBytes  96.9 Mbits/sec
[  4]  4.0- 6.0 sec  23.1 MBytes  96.8 Mbits/sec
[ 12]  4.0- 6.0 sec  22.3 MBytes  93.7 Mbits/sec
[ 10]  4.0- 6.0 sec  23.4 MBytes  98.3 Mbits/sec
[  8]  4.0- 6.0 sec  22.5 MBytes  94.5 Mbits/sec
[  6]  4.0- 6.0 sec  22.9 MBytes  96.0 Mbits/sec
[  9]  4.0- 6.0 sec  21.5 MBytes  90.4 Mbits/sec
[  3]  4.0- 6.0 sec  23.3 MBytes  97.5 Mbits/sec
[ 11]  4.0- 6.0 sec  23.0 MBytes  96.3 Mbits/sec
[SUM]  4.0- 6.0 sec   227 MBytes   954 Mbits/sec			<---
[ 10]  6.0- 8.0 sec  22.8 MBytes  95.5 Mbits/sec
[  7]  6.0- 8.0 sec  22.0 MBytes  92.4 Mbits/sec
[  9]  6.0- 8.0 sec  21.7 MBytes  91.0 Mbits/sec
[  8]  6.0- 8.0 sec  22.9 MBytes  96.2 Mbits/sec
[  5]  6.0- 8.0 sec  23.3 MBytes  97.6 Mbits/sec
[  6]  6.0- 8.0 sec  22.7 MBytes  95.1 Mbits/sec
[  3]  6.0- 8.0 sec  22.8 MBytes  95.7 Mbits/sec
[ 11]  6.0- 8.0 sec  22.4 MBytes  94.0 Mbits/sec
[  4]  6.0- 8.0 sec  23.5 MBytes  98.7 Mbits/sec
[ 12]  6.0- 8.0 sec  23.1 MBytes  97.0 Mbits/sec
[SUM]  6.0- 8.0 sec   227 MBytes   953 Mbits/sec			<---
[  8]  8.0-10.0 sec  22.9 MBytes  96.2 Mbits/sec
[  3]  8.0-10.0 sec  22.1 MBytes  92.7 Mbits/sec
[ 10]  8.0-10.0 sec  23.6 MBytes  99.2 Mbits/sec
[  5]  8.0-10.0 sec  22.7 MBytes  95.3 Mbits/sec
[  6]  8.0-10.0 sec  22.2 MBytes  92.9 Mbits/sec
[  7]  8.0-10.0 sec  22.8 MBytes  95.7 Mbits/sec
[  9]  8.0-10.0 sec  23.4 MBytes  98.3 Mbits/sec
[ 11]  8.0-10.0 sec  22.7 MBytes  95.4 Mbits/sec
[  4]  8.0-10.0 sec  22.4 MBytes  94.0 Mbits/sec
[ 12]  8.0-10.0 sec  22.4 MBytes  93.9 Mbits/sec
[SUM]  8.0-10.0 sec   227 MBytes   954 Mbits/sec			<---
[  7] 10.0-12.0 sec  23.2 MBytes  97.2 Mbits/sec
[ 11] 10.0-12.0 sec  23.5 MBytes  98.7 Mbits/sec
[  4] 10.0-12.0 sec  22.2 MBytes  93.2 Mbits/sec
[ 10] 10.0-12.0 sec  21.7 MBytes  91.0 Mbits/sec
[  8] 10.0-12.0 sec  22.9 MBytes  95.9 Mbits/sec
[  5] 10.0-12.0 sec  23.5 MBytes  98.6 Mbits/sec
[  6] 10.0-12.0 sec  22.6 MBytes  94.9 Mbits/sec
[  9] 10.0-12.0 sec  22.2 MBytes  93.3 Mbits/sec
[  3] 10.0-12.0 sec  22.9 MBytes  96.2 Mbits/sec
[ 12] 10.0-12.0 sec  22.4 MBytes  94.1 Mbits/sec
[SUM] 10.0-12.0 sec   227 MBytes   953 Mbits/sec			<---
[  5] 12.0-14.0 sec  22.4 MBytes  93.9 Mbits/sec
[  9] 12.0-14.0 sec  22.1 MBytes  92.9 Mbits/sec
[  4] 12.0-14.0 sec  23.9 MBytes   100 Mbits/sec
[ 10] 12.0-14.0 sec  22.9 MBytes  96.0 Mbits/sec
[  8] 12.0-14.0 sec  22.6 MBytes  94.7 Mbits/sec
[  6] 12.0-14.0 sec  23.1 MBytes  97.1 Mbits/sec
[  7] 12.0-14.0 sec  22.0 MBytes  92.3 Mbits/sec
[  3] 12.0-14.0 sec  22.6 MBytes  95.0 Mbits/sec
[ 11] 12.0-14.0 sec  22.8 MBytes  95.5 Mbits/sec
[ 12] 12.0-14.0 sec  23.0 MBytes  96.3 Mbits/sec
[SUM] 12.0-14.0 sec   227 MBytes   954 Mbits/sec			<---
[  8] 14.0-16.0 sec  22.5 MBytes  94.2 Mbits/sec
[  5] 14.0-16.0 sec  23.4 MBytes  98.0 Mbits/sec
[  7] 14.0-16.0 sec  22.6 MBytes  94.7 Mbits/sec
[  9] 14.0-16.0 sec  23.2 MBytes  97.4 Mbits/sec
[  4] 14.0-16.0 sec  23.1 MBytes  97.1 Mbits/sec
[ 12] 14.0-16.0 sec  22.2 MBytes  93.0 Mbits/sec
[ 10] 14.0-16.0 sec  23.1 MBytes  96.8 Mbits/sec
[  6] 14.0-16.0 sec  22.8 MBytes  95.8 Mbits/sec
[  3] 14.0-16.0 sec  22.4 MBytes  93.8 Mbits/sec
[ 11] 14.0-16.0 sec  22.2 MBytes  92.9 Mbits/sec
[SUM] 14.0-16.0 sec   227 MBytes   954 Mbits/sec			<---
[ 10] 16.0-18.0 sec  22.9 MBytes  96.0 Mbits/sec
[  8] 16.0-18.0 sec  22.8 MBytes  95.8 Mbits/sec
[  5] 16.0-18.0 sec  23.3 MBytes  97.9 Mbits/sec
[  6] 16.0-18.0 sec  22.6 MBytes  94.9 Mbits/sec
[  7] 16.0-18.0 sec  22.1 MBytes  92.8 Mbits/sec
[  9] 16.0-18.0 sec  23.1 MBytes  97.0 Mbits/sec
[  3] 16.0-18.0 sec  23.2 MBytes  97.3 Mbits/sec
[ 11] 16.0-18.0 sec  22.0 MBytes  92.1 Mbits/sec
[  4] 16.0-18.0 sec  22.2 MBytes  93.0 Mbits/sec
[ 12] 16.0-18.0 sec  22.8 MBytes  95.8 Mbits/sec
[SUM] 16.0-18.0 sec   227 MBytes   953 Mbits/sec			<---
[ 10] 18.0-20.0 sec  22.4 MBytes  93.8 Mbits/sec
[  8] 18.0-20.0 sec  22.3 MBytes  93.5 Mbits/sec
[  5] 18.0-20.0 sec  22.8 MBytes  95.6 Mbits/sec
[  6] 18.0-20.0 sec  22.5 MBytes  94.6 Mbits/sec
[  7] 18.0-20.0 sec  21.9 MBytes  92.1 Mbits/sec
[  9] 18.0-20.0 sec  23.8 MBytes  99.7 Mbits/sec
[  3] 18.0-20.0 sec  22.9 MBytes  96.1 Mbits/sec
[ 11] 18.0-20.0 sec  22.6 MBytes  94.8 Mbits/sec
[  4] 18.0-20.0 sec  22.7 MBytes  95.0 Mbits/sec
[ 12] 18.0-20.0 sec  23.5 MBytes  98.6 Mbits/sec
[SUM] 18.0-20.0 sec   227 MBytes   954 Mbits/sec			<---
[ 10] 20.0-22.0 sec  22.5 MBytes  94.3 Mbits/sec
[  8] 20.0-22.0 sec  22.9 MBytes  95.9 Mbits/sec
[  5] 20.0-22.0 sec  22.5 MBytes  94.4 Mbits/sec
[  6] 20.0-22.0 sec  23.0 MBytes  96.6 Mbits/sec
[  7] 20.0-22.0 sec  22.7 MBytes  95.4 Mbits/sec
[  9] 20.0-22.0 sec  23.0 MBytes  96.5 Mbits/sec
[  3] 20.0-22.0 sec  22.8 MBytes  95.6 Mbits/sec
[ 11] 20.0-22.0 sec  22.5 MBytes  94.3 Mbits/sec
[  4] 20.0-22.0 sec  22.4 MBytes  93.8 Mbits/sec
[ 12] 20.0-22.0 sec  23.0 MBytes  96.4 Mbits/sec
[SUM] 20.0-22.0 sec   227 MBytes   953 Mbits/sec			<---
[  5] 22.0-24.0 sec  22.2 MBytes  93.2 Mbits/sec
[ 10] 22.0-24.0 sec  23.2 MBytes  97.2 Mbits/sec
[  8] 22.0-24.0 sec  23.0 MBytes  96.5 Mbits/sec
[  6] 22.0-24.0 sec  22.8 MBytes  95.6 Mbits/sec
[  7] 22.0-24.0 sec  22.5 MBytes  94.2 Mbits/sec
[  9] 22.0-24.0 sec  22.8 MBytes  95.7 Mbits/sec
[  3] 22.0-24.0 sec  22.6 MBytes  94.6 Mbits/sec
[ 11] 22.0-24.0 sec  22.8 MBytes  95.6 Mbits/sec
[  4] 22.0-24.0 sec  22.5 MBytes  94.5 Mbits/sec
[ 12] 22.0-24.0 sec  23.2 MBytes  97.3 Mbits/sec
[SUM] 22.0-24.0 sec   228 MBytes   954 Mbits/sec			<---
[  7] 24.0-26.0 sec  23.3 MBytes  97.8 Mbits/sec
[  4] 24.0-26.0 sec  23.4 MBytes  98.0 Mbits/sec
[ 10] 24.0-26.0 sec  23.1 MBytes  97.0 Mbits/sec
[  8] 24.0-26.0 sec  22.5 MBytes  94.4 Mbits/sec
[  5] 24.0-26.0 sec  21.8 MBytes  91.4 Mbits/sec
[  6] 24.0-26.0 sec  22.8 MBytes  95.5 Mbits/sec
[  9] 24.0-26.0 sec  22.9 MBytes  96.1 Mbits/sec
[  3] 24.0-26.0 sec  22.6 MBytes  94.8 Mbits/sec
[ 11] 24.0-26.0 sec  22.3 MBytes  93.6 Mbits/sec
[ 12] 24.0-26.0 sec  22.5 MBytes  94.2 Mbits/sec
[SUM] 24.0-26.0 sec   227 MBytes   953 Mbits/sec			<---
[  7] 26.0-28.0 sec  22.9 MBytes  96.2 Mbits/sec
[  4] 26.0-28.0 sec  23.2 MBytes  97.4 Mbits/sec
[ 10] 26.0-28.0 sec  22.8 MBytes  95.8 Mbits/sec
[  8] 26.0-28.0 sec  22.5 MBytes  94.3 Mbits/sec
[  5] 26.0-28.0 sec  22.8 MBytes  95.7 Mbits/sec
[  6] 26.0-28.0 sec  22.4 MBytes  93.8 Mbits/sec
[  9] 26.0-28.0 sec  22.5 MBytes  94.6 Mbits/sec
[  3] 26.0-28.0 sec  23.2 MBytes  97.1 Mbits/sec
[ 11] 26.0-28.0 sec  22.7 MBytes  95.3 Mbits/sec
[ 12] 26.0-28.0 sec  22.2 MBytes  93.2 Mbits/sec
[SUM] 26.0-28.0 sec   227 MBytes   953 Mbits/sec			<---
[ 10] 28.0-30.0 sec  22.5 MBytes  94.3 Mbits/sec
[ 10]  0.0-30.0 sec   343 MBytes  95.9 Mbits/sec
[ 10] Sent 244637 datagrams
[  8] 28.0-30.0 sec  22.8 MBytes  95.6 Mbits/sec
[  8]  0.0-30.0 sec   340 MBytes  94.9 Mbits/sec
[  8] Sent 242236 datagrams
[  5] 28.0-30.0 sec  22.4 MBytes  94.0 Mbits/sec
[  5]  0.0-30.0 sec   341 MBytes  95.3 Mbits/sec
[  5] Sent 243249 datagrams
[  6] 28.0-30.0 sec  22.2 MBytes  93.1 Mbits/sec
[  6]  0.0-30.0 sec   340 MBytes  95.0 Mbits/sec
[  6] Sent 242440 datagrams
[  7] 28.0-30.0 sec  22.1 MBytes  92.6 Mbits/sec
[  7]  0.0-30.0 sec   340 MBytes  94.9 Mbits/sec
[  7] Sent 242176 datagrams
[  9] 28.0-30.0 sec  23.7 MBytes  99.4 Mbits/sec
[  9]  0.0-30.0 sec   341 MBytes  95.3 Mbits/sec
[  9] Sent 243245 datagrams
[  3] 28.0-30.0 sec  24.1 MBytes   101 Mbits/sec
[  3]  0.0-30.0 sec   343 MBytes  95.9 Mbits/sec
[  3] Sent 244785 datagrams
[ 11] 28.0-30.0 sec  23.3 MBytes  97.9 Mbits/sec
[ 11]  0.0-30.0 sec   341 MBytes  95.3 Mbits/sec
[ 11] Sent 243107 datagrams
[  4] 28.0-30.0 sec  22.1 MBytes  92.5 Mbits/sec
[  4]  0.0-30.0 sec   342 MBytes  95.7 Mbits/sec
[  4] Sent 244166 datagrams
[ 12] 28.0-30.0 sec  22.3 MBytes  93.4 Mbits/sec
[SUM] 28.0-30.0 sec   227 MBytes   954 Mbits/sec			<---
[ 12]  0.0-30.0 sec   341 MBytes  95.3 Mbits/sec
[ 12] Sent 243057 datagrams
[SUM]  0.0-30.0 sec  3.33 GBytes   954 Mbits/sec			<---
[  4] Server Report:
[  4]  0.0-30.0 sec   341 MBytes  95.4 Mbits/sec   0.853 ms  829/244165 (0.34%)
[  4]  0.0-30.0 sec  1 datagrams received out-of-order
[ 11] Server Report:
[ 11]  0.0-30.0 sec   339 MBytes  94.9 Mbits/sec   0.631 ms  986/243106 (0.41%)
[ 11]  0.0-30.0 sec  1 datagrams received out-of-order
[  3] Server Report:
[  3]  0.0-30.0 sec   341 MBytes  95.2 Mbits/sec   0.704 ms 1840/244784 (0.75%)
[  3]  0.0-30.0 sec  9 datagrams received out-of-order
[  8] Server Report:
[  8]  0.0-30.0 sec   338 MBytes  94.4 Mbits/sec   0.689 ms 1277/242235 (0.53%)
[  8]  0.0-30.0 sec  1 datagrams received out-of-order
[ 12] Server Report:
[ 12]  0.0-30.0 sec   339 MBytes  94.8 Mbits/sec   0.478 ms 1084/243056 (0.45%)
[ 12]  0.0-30.0 sec  1 datagrams received out-of-order
[  9] Server Report:
[  9]  0.0-30.0 sec   339 MBytes  94.8 Mbits/sec   0.894 ms 1239/243244 (0.51%)
[  9]  0.0-30.0 sec  7 datagrams received out-of-order
[  6] Server Report:
[  6]  0.0-30.0 sec   337 MBytes  94.3 Mbits/sec   0.549 ms 1716/242439 (0.71%)
[  6]  0.0-30.0 sec  3 datagrams received out-of-order
[  7] Server Report:
[  7]  0.0-30.0 sec   338 MBytes  94.5 Mbits/sec   0.581 ms 1014/242175 (0.42%)
[  7]  0.0-30.0 sec  1 datagrams received out-of-order
[  5] Server Report:
[  5]  0.0-30.0 sec   340 MBytes  95.0 Mbits/sec   0.496 ms  914/243248 (0.38%)
[  5]  0.0-30.0 sec  1 datagrams received out-of-order
[ 10] Server Report:
[ 10]  0.0-30.0 sec   342 MBytes  95.6 Mbits/sec   0.549 ms  702/244636 (0.29%)
[ 10]  0.0-30.0 sec  3 datagrams received out-of-order


Add -r to do a sequential bidirectional test where it tests upload first, download second. This requires your client to be on a public IP so the iperf server can directly communicate! 

...

HTML
iperf -c iperf.wiscnet.net -

...

t 

...

10 -

...

P 

...

4 -

...

u -

...

b 

...

250m -

...

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

...

i1


Bidirectional 1Gbps circuit test

*Firewall settings and NAT may impact a bidirectional test

HTML
iperf -c iperf.wiscnet.net -

...

t 

...

10 -

...

 

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

...

P 4 -u -b 250m -i1 -r -L 6001

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.

...

Installation Guides

Microsoft Windows

...

  • 9-win32.zip
  • Extract the contents of the .zip to any folder

Image Added

  • Open a command prompt and navigate to the extracted iperf2 folder:
    Image Added
  • Now you can run your desired iperf test:
    Image Added

Apple macOS

*nix

  • Many Lunix and Unix distros will have iperf in official repositories. Make sure to install iperf2 (iperf), not iperf3
  • Ubuntu


HTML
$ apt-cache search iperf | grep -i iperf
iperf - Internet Protocol bandwidth measuring tool
iperf3 - Internet Protocol bandwidth measuring tool
$ sudo apt-get install iperf

 

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]  9.0-10.0 sec   584 KBytes  4.78 Mbits/sec
[1820]  9.0-10.0 sec  1.51 MBytes  12.7 Mbits/sec
[ ID] Interval       Transfer     Bandwidth
[1848]  0.0-10.0 sec  7.59 MBytes  6.34 Mbits/sec
[1820]  0.0-10.1 sec  13.1 MBytes  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]  0.0-10.0 sec  19.5 MBytes  16.4 Mbits/sec
[1824] local 146.151.208.16 port 60000 connected with iperf.wiscnet.net port 60000

[ ID] Interval       Transfer     Bandwidth
[1824]  0.0- 1.0 sec  2.22 MBytes  18.6 Mbits/sec
[1824]  1.0- 2.0 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

Installation Guides

Windows

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