Troubleshooting Interfaces

Hello rosna

Yes, all Cisco devices have Ethernet ports that support both half and full duplex. In order for them to function correctly however, you require the appropriate configuration on both ends.

The following combinations of configurations will function correctly for duplex settings:

  1. Half duplex - Half duplex
  2. Full duplex - Full duplex
  3. Half duplex - Auto
  4. Full duplex - Auto

The only configuration that will not function is:

  1. Half duplex - Full duplex

If you have one of the first four configurations set up and it is still not working, then the problem is not with the duplex settings.

I hope this has been helpful!

Laz