Users Guide

To tag frames leaving an interface in Layer 2 mode, assign that interface to a port-based VLAN to tag it with that VLAN ID. To
tag interfaces, 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 Enable an interface to include the IEEE 802.1Q tag header.
INTERFACE mode
tagged interface
Add an Interface to Another VLAN
To view just the interfaces that are in Layer 2 mode, use the show interfaces switchport command in EXEC Privilege
mode or EXEC mode.
The following example shows the steps to add a tagged interface (in this case, port channel 1) to VLAN 4. To view the
interface’s status. Interface (po 1) is tagged and in VLAN 2 and 3, use the show vlan command. In a port-based VLAN, use the
tagged command to add the interface to another VLAN. The
show vlan command output displays the interface’s (po 1)
changed status.
Except for hybrid ports, only a tagged interface can be a member of multiple VLANs. You can assign hybrid ports to two VLANs
if the port is untagged in one VLAN and tagged in all others.
Dell#show vlan
Codes: * - Default VLAN, G - GVRP VLANs
NUM Status Q Ports
* 1 Inactive
2 Active T Po1(Te 0/0-1)
T Te 2/0
3 Active T Po1(Te 0/0-1)
T Te 2/1
Dell#config
Dell(conf)#int vlan 4
Dell(conf-if-vlan)#
tagged po 1
Dell(conf-if-vlan)#show conf
!
interface Vlan 4
no ip address
tagged Port-channel 1
Dell(conf-if-vlan)#end
Dell#
show vlan
Codes: * - Default VLAN, G - GVRP VLANs
NUM Status Q Ports
* 1 Inactive
2 Active T Po1(Te 0/0-1)
T Te 3/0
3 Active T Po1(Te 0/0-1)
T Te 3/1
4 Active T Po1(Te 0/0-1)
Dell#
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.
Virtual LANs (VLANs) 952