Vlan Dot1Q Tag Native - Cisco Nexus 5500 Series Command Reference Manual

Chapter V Commands

vlan dot1Q tag native

To enable dot1q (IEEE 802.1Q) tagging for all native VLANs on all trunked ports on the switch, use the
vlan dot1Q tag native command. To disable dot1q (IEEE 802.1Q) tagging for all native VLANs on all
trunked ports on the switch, use the no form of this command.
Syntax Description
This command has no arguments or keywords.
Command Default
Disabled
Command Modes Global configuration mode
Command History Release
5.2(1)N1(1)
Usage Guidelines
Typically, you configure 802.1Q trunks with a native VLAN ID, which strips tagging from all packets
on that VLAN.
To maintain the tagging on the native VLAN and drop untagged traffic, use the vlan dot1q tag native
command. The switch will tag the traffic received on the native VLAN and admit only 802.1Q-tagged
frames, dropping any untagged traffic, including untagged traffic in the native VLAN.
Control traffic continues to be accepted as untagged on the native VLAN on a trunked port, even when
the vlan dot1q tag native command is enabled.
The vlan dot1q tag native command is enabled on global basis.
Note
Examples This example shows how to enable 802.1Q tagging on the switch:
switch(config)# vlan dot1q tag native
switch(config)#
This example shows how to disable 802.1Q tagging on the switch:
switch(config)# no vlan dot1q tag native
Turning off vlan dot1q tag native may impact the functioning of existing dot1q tunnel
ports
switch(config)#
OL-27880-02
vlan dot1Q tag native
no vlan dot1Q tag native
Modification
This command we introduced.
Cisco Nexus 5500 Series NX-OS Layer 2 Interfaces Command Reference
vlan dot1Q tag native
1439