iperf3: iperf3 (bandwidth measurement tool) iperf3: iperf3: Perf3 is a tool for active measurements of the maximum achievable iperf3: bandwidth on IP networks. It supports tuning of various parameters iperf3: related to timing, buffers and protocols (TCP, UDP, SCTP, with IPv4 iperf3: and IPv6). For each test it reports the bandwidth, loss, and other iperf3: parameters. iperf3: iperf3: This is a new implementation that shares no code with the original iperf3: iPerf and also is not backwards compatible. iperf3: