Date: 2021mar20 Updated: 2024jun12 OS: Linux Q. Linux: Measure bandwidth between two machines A. Use iperf To install (RedHat/Fedora/CentOS):

dnf install iperf

On both client and server. Open TCP port 5001 on the server. You may need to open the firewall. On the server run:

iperf -s

On the client run:

iperf -c <server-domain-name or IP-address>

It takes under a minute to run a test and the results are displayed on both machines. You can change the port with -p <port> And there are many other options.