Moving Untagged Interfaces - Dell C9000 Series Networking Configuration Manual

When you remove a tagged interface from a VLAN (using the no tagged interface command), it remains
tagged only if it is a tagged interface in another VLAN. If the tagged interface is removed from the only VLAN
to which it belongs, the interface is placed in the Default VLAN as an untagged interface.

Moving Untagged Interfaces

To move untagged interfaces from the Default VLAN to another VLAN, use the following commands.
1 Access INTERFACE VLAN mode of the VLAN to which you want to assign the interface.
CONFIGURATION mode
interface vlan vlan-id
2 Configure an interface as untagged.
INTERFACE mode
untagged interface
This command is available only in VLAN interfaces.
Move an Untagged Interface to Another VLAN
The no untagged interface command removes the untagged interface from a port-based VLAN and
places the interface in the Default VLAN. You cannot use the no untagged interface command in the
Default VLAN. The following example shows the steps and commands to move an untagged interface from
the Default VLAN to another VLAN.
To determine interface status, use the show vlan command. Interface (te 2/2) is untagged and in the Default
VLAN (vlan 1). In a port-based VLAN (vlan 4), use the untagged command to add the interface to that VLAN.
The show vlan command output displays the interface's changed status (te 2/2). Because the Default VLAN
no longer contains any interfaces, it is listed as inactive.
Dell#show vlan
Codes: * - Default VLAN, G - GVRP VLANs
NUM Status Q
* 1 Active U
2 Active T
T
3 Active T
T
4 Inactive
Dell#conf
Dell(conf)#int vlan 4
Dell(conf-if-vlan)#untagged te 2/2
Dell(conf-if-vlan)#show config
!
interface Vlan 4
no ip address
untagged TenGigabitEthernet 2/2
Dell(conf-if-vlan)#end
Dell#show vlan
Codes: * - Default VLAN, G - GVRP VLANs
Ports
Te 2/2
Po1(Te 0/0-1)
Te 2/0
Po1(Te 0/0-1)
Te 2/1
Virtual LANs (VLANs) 1140