2-840Cisco Catalyst Blade Switch 3120 for HP Command ReferenceOL-12248-03Chapter 2 Cisco Catalyst Blade Switch 3120 for HP Cisco IOS Commandsvlan dot1q tag nativevlan dot1q tag nativeUse the vlan dot1q tag native global configuration command on the switch stack or on a standaloneswitch to enable tagging of native VLAN frames on all IEEE 802.1Q trunk ports. Use the no form of thiscommand to return to the default setting.vlan dot1q tag nativeno vlan dot1q tag nativeSyntax Description This command has no arguments or keywords.Defaults The IEEE 802.1Q native VLAN tagging is disabled.Command Modes Global configurationCommand HistoryUsage Guidelines When enabled, native VLAN packets going out all IEEE 802.1Q trunk ports are tagged.When disabled, native VLAN packets going out all IEEE 802.1Q trunk ports are not tagged.You can use this command with the IEEE 802.1Q tunneling feature. This feature operates on an edgeswitch of a service-provider network and expands VLAN space by using a VLAN-in-VLAN hierarchyand tagging the tagged packets. You must use IEEE 802.1Q trunk ports for sending packets to theservice-provider network. However, packets going through the core of the service-provider networkmight also be carried on IEEE 802.1Q trunks. If the native VLANs of an IEEE 802.1Q trunks match thenative VLAN of a tunneling port on the same switch, traffic on the native VLAN is not tagged on thesending trunk port. This command ensures that native VLAN packets on all IEEE 802.1Q trunk ports aretagged.For more information about IEEE 802.1Q tunneling, see the software configuration guide for thisrelease.Examples This example shows how to enable IEEE 802.1Q tagging on native VLAN frames:Switch# configure terminalSwitch (config)# vlan dot1q tag nativeSwitch (config)# endYou can verify your settings by entering the show vlan dot1q tag native privileged EXEC command.Release Modification12.2(40)EX1 This command was introduced.
