Summary
Manual steps to change advertised port speed using CentOS* 7.7
Description
Unable to set manually the network card port speed using ethtool. The network card port works at 1GbE if the link partner is 1GpE.
Resolution
- Verify the current advertised modes. Open a Terminal (Command line window)
- Type the command: ethtool -s advertise
- Then, conclude all bit masks associated with these modes and setting advertised to this value according to the Bitmask values. Available at Ethtool(8) - Linux* Manual Page.