The direct answer is there is no *variable* rate control for iperf as in the current code base. It could be added and it wouldn’t take a lot of code. It also depends on what is to be varied.
As far as simulating from different ip addresses. Iperf operates as the “TCP/UDP” socket layer so IP addresses are set by the operating system per things like the routing table. Port variation would be doable but again, it’s not part of the existing code. Bob From: MD I. Islam [mailto:misl...@kent.edu] Sent: Wednesday, December 09, 2015 2:18 PM To: iperf-users@lists.sourceforge.net Subject: [Iperf-users] variable bit-rate traffic and variable source IP address Hi Is it possible to shape the traffic in iperf? I need the traffic to be variable bit rate instead of constant bit rate (following some probability distribution). Could you please advice? I also need to simulate that the traffic is coming from different IP address and port. So, through the traffic is being generated from a node, I need the source IP address of the packets to be different. Is it possible to achieve in iperf? Looking forward to your suggestions. Thanks Tamim
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