Vlan Dot1Q Tag Native - Cisco Catalyst 3750 Command Reference Manual

vlan dot1q tag native

vlan dot1q tag native
Use the vlan dot1q tag native global configuration command on the switch stack or on a standalone
switch to enable tagging of native VLAN frames on all 802.1Q trunk ports. Use the no form of this
command to return to the default setting.
Syntax Description
This command has no arguments or keywords.
Defaults
The 802.1Q native VLAN tagging is disabled.
Command Modes Global configuration
Command History Release
12.2(25)EA1
Usage Guidelines When enabled, native VLAN packets going out all 802.1Q trunk ports are tagged.
When disabled, native VLAN packets going out all 802.1Q trunk ports are not tagged.
You can use this command with the 802.1Q tunneling feature. This feature operates on an edge switch
of a service-provider network and expands VLAN space by using a VLAN-in-VLAN hierarchy and
tagging the tagged packets. You must use 802.1Q trunk ports for sending packets to the service-provider
network. However, packets going through the core of the service-provider network might also be carried
on 802.1Q trunks. If the native VLANs of an 802.1Q trunks match the native VLAN of a tunneling port
on the same switch, traffic on the native VLAN is not tagged on the sending trunk port. This command
ensures that native VLAN packets on all 802.1Q trunk ports are tagged.
For more information about 802.1Q tunneling, see the software configuration guide for this release.
Note
Examples This example shows how to enable 802.1Q tagging on native VLAN frames:
Switch# configure terminal
Switch (config)# vlan dot1q tag native
Switch (config)# end
You can verify your settings by entering the show vlan dot1q tag native privileged EXEC command.
Catalyst 3750 Switch Command Reference
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vlan dot1q tag native
no vlan dot1q tag native
Modification
This command was introduced.
Chapter 2 Catalyst 3750 Switch Cisco IOS Commands
78-16181-03