Apple Resources - iperf3
http://edu-observatory.org/olli/Manage/iperf3.html

1. Download and Install Homebrew
   https://github.com/Homebrew/brew/releases
  
2. Install iperf3 (using Homebrew) from the Mac Terminal 
   /opt/homebrew/bin/brew install iperf3 
  
3. Using iperf3  
   Man page for iperf3
   man iperf3
   Check my bandwidth 
   /opt/homebrew/bin/iperf3 -c speedtest.chi11.us.leaseweb.net -p 5201-5210 -R
   /opt/homebrew/bin/iperf3 -c speedtest.chi11.us.leaseweb.net -p 5201-5210
   /opt/homebrew/bin/iperf3 -c speedtest15.suddenlink.net -R
   /opt/homebrew/bin/iperf3 -c speedtest15.suddenlink.net


   
   

 
    sam.wormley@icloud.com