It's end to end at the socket layer, writes and reads. So it's the transport layer payload. The transport layer cab be either TCP or UDP with iperf 2. Iperf 3 also carries SCP.
The lower layers, e.g. IP & ethernet frames are not part of the calculation. Those don't typically go to socket or app layer. https://man7.org/linux/man-pages/man2/socket.2.html Bob On Sun, Feb 19, 2023, 5:50 AM Pieter Hulshoff <[email protected]> wrote: > Hello all, > > When I'm running iperf bandwidth tests, what exactly am I configuring > (-b) / measuring (displayed results)? > UDP/TCP payload? > IP payload (UDP/TCP data)? > Ethernet payload (IP data)? > Ethernet data? > > Kind regards, > > Pieter Hulshoff > > > > _______________________________________________ > Iperf-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/iperf-users > -- This electronic communication and the information and any files transmitted with it, or attached to it, are confidential and are intended solely for the use of the individual or entity to whom it is addressed and may contain information that is confidential, legally privileged, protected by privacy laws, or otherwise restricted from disclosure to anyone else. If you are not the intended recipient or the person responsible for delivering the e-mail to the intended recipient, you are hereby notified that any use, copying, distributing, dissemination, forwarding, printing, or copying of this e-mail is strictly prohibited. If you received this e-mail in error, please return the e-mail to the sender, delete it from your computer, and destroy any printed copy of it.
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