encapsulation dot1Q

To enable IEEE 802.1Q encapsulation of traffic on a specified subinterface, use the encapsulation dot1q command. To disable encapsulation, use the no form of this command.

encapsulation dot1Q vlan-id

no encapsulation dot1Q vlan-id

Syntax Description


VLAN to set when the interface is in access mode; valid values are from 1 to 4093, except for the VLANs reserved for internal switch use.

Command Default

No encapsulation

Command Modes

Subinterface configuration mode

Command History



This command was introduced.

Usage Guidelines

IEEE 802.1Q encapsulation is configurable on Ethernet and EtherChannel interfaces. IEEE 802.1Q is a standard protocol for interconnecting multiple switches and routers and for defining VLAN topologies.

Use the encapsulation dot1q command in subinterface range configuration mode to apply a VLAN ID to the subinterface.

Note This command is not applicable to loopback interfaces.

This command does not require a license.


This example shows how to enable dot1Q encapsulation on a subinterface for VLAN 30:

switch(config)# interface ethernet 1/5.1 
switch(config-subif)# encapsulation dot1q 30 

Related Commands


show vlan dot1Q

Displays dot1Q encapsulation information for a VLAN.