bmon is a free and open-source monitoring and debugging tool to monitor bandwidth and capture and display networking-related statistics. It features various output methods including an interactive curses user interface and programmable text output for scripting. bmon allows the user to see:

  1. Network bandwidth real-time visualization
  2. Total amount of transmitted data
  3. CRC errors
  4. Collisions
  5. ICMPv6 traffic packets
bmon with expanded panels