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Table Of Contents

Assigning Interfaces to a VLAN

You can only assign interfaces in Layer 2 mode to a VLAN using the tagged and untagged commands. To place an interface in

Layer 2 mode, use the switchport command.

You can further designate these Layer 2 interfaces as tagged or untagged. For more information, see the Interfaces chapter

and Configuring Layer 2 (Data Link) Mode. When you place an interface in Layer 2 mode by the switchport command, the

interface is automatically designated untagged and placed in the Default VLAN.

To view which interfaces are tagged or untagged and to which VLAN they belong, use the show vlan command. The following

example shows that six VLANs are configured, and two interfaces are assigned to VLAN 2. The Q column in the show vlan

command example notes whether the interface is tagged (T) or untagged (U). For more information about this command, refer

to the Layer 2 chapter of the Dell EMC Networking OS Command Reference 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

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.

DellEMC#show vlan

Codes: * - Default VLAN, G - GVRP VLANs

NUM Status Q Ports

* 1 Inactive

2 Active T Po1(So 0/0-1)

T Te 1/1/1

3 Active T Po1(So 0/0-1)

T Te 1/2/1

DellEMC#config

DellEMC(conf)#interface vlan 4

DellEMC(conf-if-vlan)#tagged po 1

DellEMC(conf-if-vlan)#show conf

interface Vlan 4

no ip address

tagged Port-channel 1

DellEMC(conf-if-vlan)#end