Break those bottlenecks: Performance test your network with Iperf Getting a grip on network performance numbers is one of the most difficult tasks for network managers.

Now the theoretical maximum has increased from 7Mbps to 50Mbps. And yet, the same iperf test yields the same ~2.20Mbps. Adding the -P3 switch yields about 6Mbps, and the -P5 switch yields over 7Mbps.