iperf, iperf2, iperf3

Version 1

    We recommend using iperf and iperf2 and not iperf3.  iperf3 lacks several features found in iperf2, for example multicast tests, bidirectional tests, multi-threading, and official Windows support.  For testing our high throughput adapters (100GbE), we recommend to use iperf2 (2.0.x) in Linux and NTTTCP in Windows.