In Trunk mode the native VLAN is VLAN 1. A Trunk port needs to have a native VLAN for any untagged traffic. You can change the native VLAN using the following command.  Console(config)# interface ethernet 1/e16 Console(config-if)# switchport trunk native vlan 999
Hello! I need to remove VLAN 1 from the interface. How to do it on Dell PowerConnect 3548?
How to remove VLAN 1 from the interfaсe