Hi Joydev,
Yes, the number of physical ports is limited by the hardware/host. The
number of iperf flows is not, i.e. a single host can have multiple iperf
streams.
As standard testing there are no switches which iperf is compiled for.
One would have to talk with the switch vendor to have them supply iperf for
their switch. I also would be a bit wary about this because switches tend
to have less substantial CPUs than let's say an Intel server. So, while
it's ability to switch traffic is high performance, the ability to source
and sink traffic may not be.
Another option is to use vlans on the host with the NIC connected to a vlan
capable switch as the mux and demux. Connect a quality server to the
switch over a trunk port. Maybe use a 10G NIC port to a switch with ten 1G
ports.
For many of my setups I use the Intel quad port server adapter
<https://www.intel.com/content/www/us/en/ethernet-products/gigabit-server-adapters/overview.html>
to get multiple NICs. Also, you may need to install some policy routes
when sourcing traffic out of the same host with multiple NIC ports. This
allows one to have an iperf flow use a particular NIC port.
Bob
On Sun, Jun 18, 2017 at 10:46 PM, Jana, Joydev <joydev.j...@coriant.com>
wrote:
> Hello,
>
> We are investigating the possibility to use any open source IP traffic
> generator/Analyser app that can be installed in any device to be able to
> verify error free flow.
>
> Reading through the documentation of Iperf, this tool is possible to do so
> when installed into Client/server setup which can be Windows or Linux based
> Machine.
>
> This means the physical ports that can be used from the Linus Machine are
> connected to the DUT/Network under test.
>
> This also means that number of ports available from the Generator/Analyser
> are guided by number of NIC ports available.
>
> Is this correct understanding?
>
>
>
> This leads to another question:
>
> Can Iperf be installed into Switches which has say 50 to 100 ports
> available and each can be used as a Generator/Analyser port?
>
> If so, do you have any recommendation to type of switch in use by already
> users who are using Iperf in such application requiring say 50 ports used
> simultaneously to generate and analyse IP traffic packets.
>
>
>
> Thanks,
>
> Joydev Jana
>
> Coriant Oy
>
> Sinimaentie 6
>
> 02630 Finland
>
> +358 40 757 4862 <+358%2040%207574862>
>
> joydev.j...@coriant.com
>
>
>
>
>
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