To utilize UDP instead of TCP for iPerf testing, you would have to simply use the -u flag. It is to be used with the -b flag for UDP Bandwidth. The UDP bandwidth would be sent at bits/sec. To test a 1000Mbps NIC, you can use -b flag with a value of 1000M to set max UDP bandwidth at 1000 Mbit/sec or 1 Gbit/sec. The default is 1 Mbit/sec.

It can test either TCP or UDP throughput. To perform an iperf test the user must establish both a server (to discard traffic) and a client (to generate traffic). General Options-f, --format [kmKM] format to report: Kbits, Mbits, KBytes, MBytes -h, --help print a help synopsis -i, --interval n pause n seconds between periodic bandwidth reports Testing Latency and Throughput | A-Team Chronicles ID [4] bandwidth was 57.9 GBits/sec – This is the connection from the server to the client. ID [5] bandwidth was 57.8 GBits/sec – This is the connection from the client to the server . UDP Jitter test. Restart your iperf server with the -u option to let it accept UDP packets. iperf -s -u. You should see output similar to the following: How to Use Iperf to Test Network Performance in Linux # iperf -u -c server -b 1000M ----- Client connecting to, UDP port 5001 Sending 1470 byte datagrams UDP buffer size: 124 KByte (default) ----- [ 3] local port 58097 connected with port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0-10.0 sec 1.10 GBytes 948 Mbits/sec [ 3] Sent 806540 datagrams [ 3] Server Report: [ ID

iperf to test bandwidth, what setting a - Cisco Community

conda install linux-64 v3.8.1; osx-64 v3.8.1; To install this package with conda run one of the following: conda install -c conda-forge iperf conda install -c conda Iperf version 1.7.0 - University of Arizona node2> iperf -s -w 130k ----- Server listening on TCP port 5001 TCP window size: 130 KByte ----- [ 4] local port 5001 connected with port 2530 [ ID] Interval Transfer Bandwidth [ 4] 0.0-10.1 sec 19.7 MBytes 15.7 Mbits/sec node1> iperf -c node2 -w 130k ----- Client connecting to node2, TCP port 5001 TCP window size: 129 KByte (WARNING: requested 130 KByte performance - Extreme UDP packet loss at 300Mbit (14%

FreshPorts -- benchmarks/iperf3: Improved tool to measure

The table below shows examples of useful variants of iperf. In UDP bandwidth specifications, "10m" represents 10 Mb/s. 'M' could also be used to signify 1,000,000. Similarly, 'K' and 'k' both indicate 1,000. The -n argument (number of bytes) in conjunction with -l (length of each datagram) is used to send a fixed number of datagrams of a Extreme UDP packet loss at 50Mbit-55%loss for 10Mbit-21 May 11, 2017