onkar kundargi | 27 Mar 11:24 2015
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how to calculate latency in iperf 2.0.8

Hello sir ,
               can you please tell me command to calculate latency ???


thanks
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onkar kundargi | 25 Mar 08:33 2015
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bandwidth parameter

hello sir,

how can i fix bandwidth for tcp as there is no option available for iperf.
consider scenario  if i need 23.00 GB bandwidth at output. so which parameter should i tunned in input format of iperf.
eg. iperf --client what options i need to consider to get 23.gb bandwidth at output



thanks
onkar
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onkar kundargi | 19 Mar 12:58 2015
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difference betwwen uperf and iperf ??

hello sir


what is exact difference between uperf and iperf??


thanks
onkar
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onkar kundargi | 13 Mar 10:47 2015
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Fwd: input to consider for jitter and throughput





Hello ,
           May i know command to consider throughput as input and also jitter as input



thanks

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Bob (Robert) McMahon | 5 Feb 18:10 2015

iperf2.0.9 plans

Hi,

 

Now that iperf 2.0.8 is out I’ve been getting requests for new features and bug fixes.  Here are my current plans:

 

o)  Support write error count to UDP client reports

o)  Add support for TTL information into server reports

o)  Add support for ToS information into server reports

o)  Fix –o (redirect to file) option

o)  Integrate simple IGMP/MLD querier into client to support testing v4/v6 multicast

o) Thoroughly test v6 and fix bugs found

o) Support new traffic option giving packet burst length, interburst gap, and interpacket gap

o) Come up with an analysis technique on the server to report how well the above is able to be reconstructed by the server app

 

Please feel free to contact me if other things are needed.  Also, if you have ideas on analyzing the traffic pattern per the above in a simple way, please share.

 

Bob McMahon

Broadcom Senior Principal SW Engineer, Wi-Fi Division

 

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Kartik Kumar Perisetla | 29 Jan 04:34 2015
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Regarding packet loss in UDP

Hi,

I am looking for a way to measure UDP packet loss between 2 hosts at a given bandwidth. 
I found I could leverage Mininet's iperf method to set l4type to UDP and set bandwidth. However, the response being returned isn't indicating anything about packet loss. 

So could someone please throw some light on how could I get packet loss in this scenario?

Thanks!

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Steve Baillargeon | 27 Jan 17:48 2015
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Public iperf 2 servers?

Hi

Does anyone know if there are any public servers supporting iperf2 (ideally iperf2.0.8)?

 

Any method to check the server iperf version remotely from the client?

 

Thank you

 

Steve B

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ASHISH KUMAR Dhanotiya | 21 Jan 06:51 2015
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Generating traffic

Is there any method through which I can generate traffic at specified time
Thank you
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Ashish Kumar Dhanotiya

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Bob (Robert) McMahon | 19 Jan 18:57 2015

Re: Generate ARP Packets

Hi Krati,

 

Iperf does not support sending ARP floods.  ARP is done by the kernel/os and not at the application/iperf layer and only is needed once to build the initial ARP cache.   This is all done underneath iperf.

 

You can issue arp clears per the destination ip of an active iperf stream to cause the kernel to rebuild the arp cache.  It’s doubtful that the clears can be done fast enough to meet your needs.

 

Bob

From: Krati Jain [mailto:krati24jain <at> gmail.com]
Sent: Monday, January 19, 2015 8:42 AM
To: iperf-users <at> lists.sourceforge.net
Subject: [Iperf-users] Generate ARP Packets

 

Hello,

I am working in Software Defined Networking(SDN). I have Opendaylight controller, and created virtual topology of hosts and switches using mininet(network simulator). I wish to generate huge traffic (send large number of packets one at a time)  in the network using iperf, so that controller is loaded.

The only packets which go to controller is ARP requests or whoes flows is not defined in switch.

How should I generate such packets using iperf?

Thanks,

-Krati

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New Year. New Location. New Benefits. New Data Center in Ashburn, VA.
GigeNET is offering a free month of service with a new server in Ashburn.
Choose from 2 high performing configs, both with 100TB of bandwidth.
Higher redundancy.Lower latency.Increased capacity.Completely compliant.
http://p.sf.net/sfu/gigenet
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Krati Jain | 19 Jan 17:41 2015
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Generate ARP Packets

Hello,
I am working in Software Defined Networking(SDN). I have Opendaylight controller, and created virtual topology of hosts and switches using mininet(network simulator). I wish to generate huge traffic (send large number of packets one at a time)  in the network using iperf, so that controller is loaded.
The only packets which go to controller is ARP requests or whoes flows is not defined in switch.
How should I generate such packets using iperf?
Thanks,
-Krati
------------------------------------------------------------------------------
New Year. New Location. New Benefits. New Data Center in Ashburn, VA.
GigeNET is offering a free month of service with a new server in Ashburn.
Choose from 2 high performing configs, both with 100TB of bandwidth.
Higher redundancy.Lower latency.Increased capacity.Completely compliant.
http://p.sf.net/sfu/gigenet
_______________________________________________
Iperf-users mailing list
Iperf-users@...
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Bruce A. Mah | 9 Jan 19:25 2015
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iperf-3.0.11 is available


ESnet (Energy Sciences Network) proudly announces the public release
of iperf-3.0.11.  This release includes a new -1 flag that causes the
iperf3 server to process one test and then exit (intended primarily
for integration with an upcoming release of bwctl).  A few other minor
fixes are included as well.

More information on changes can be found in the RELEASE_NOTES
file in the source distribution.

iperf3 is a tool for measuring the maximum TCP and UDP performance
along a path, allowing for the tuning of various parameters and
reporting measurements such as throughput, jitter, and datagram packet
loss.

The original iperf was implemented by NLANR / DAST.  Version 3 is a
complete reimplementation, with the goals of a smaller, simpler code
base, and a library that can be used by other programs.  It also adds
new functionality, such as CPU utilization measurements, zero copy TCP
support, and JSON output.  Note that iperf3 clients and servers are
not compatible with, and will not interoperate with, earlier versions
of iperf.

iperf3 is fully supported on Linux, FreeBSD, and MacOS X.  It may run
on other platforms as well, although it has not received the same
attention and testing.

The source code for iperf 3.0.11 is available at:

http://downloads.es.net/pub/iperf/iperf-3.0.11.tar.gz

SHA256 hash:

e01db5be6f47f67c987463095fe4f5b8b9ff891fb92c39104d042ad8fde97f6e  iperf-3.0.11.tar.gz

iperf3 is freely-redistributable under a 3-clause BSD license.  More
information can be found in the LICENSE file inside the source
distribution.

Additional documentation for iperf3 can be found at:

http://software.es.net/iperf

More information about iperf3 (including the issue tracker, source
code repository access, and mailing list) can be found on the iperf3
page on GitHub at:

https://github.com/esnet/iperf

The mailing list for iperf3 development is:

iperf-dev@...

To see the list archives or join the mailing list, visit:

http://groups.google.com/group/iperf-dev


Gmane