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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
* 1
Inactive
2
Active
T
T
3
Active
T
T
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
* 1
Inactive
2
Active
T
T
3
Active
T
T
4
Active
T
Dell#
Ports
Po1(Te 0/0-1)
Te 2/0
Po1(Te 0/0-1)
Te 2/1
Ports
Po1(Te 0/0-1)
Te 3/0
Po1(Te 0/0-1)
Te 3/1
Po1(Te 0/0-1)
Virtual LANs (VLANs)
1139
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