608 Configuring VLANsConfiguring Double VLAN TaggingBeginning in Privileged EXEC mode, use the following commands toconfigure an interface to send and accept frames with double VLAN tagging.Command Purposeconfigure Enter global configuration mode.interfaceinterface Enter interface configuration mode for the specifiedinterface. Theinterface variable includes the interface typeand number, for example gigabitethernet 1/0/3.You can also specify a range of interfaces with the interfacerange command, for example, interface rangegigabitethernet 1/0/8-12 configures interfaces 8, 9, 10, 11,and 12.mode dvlan-tunnel Enable Double VLAN Tunneling on the specifiedinterface.exit Exit to global configuration modedvlan-tunnel ethertype{802.1Q | vman |custom <0-65535>}Configure the EtherType to use for interfaces withdouble VLAN tunneling enabled.• 802.1Q — Configures the EtherType as 0x8100.• vman — Configures the EtherType as 0x88A8.• custom — Custom configures the EtherType for theDVLAN tunnel. The value must be 0-65535.CTRL + Z Exit to Privileged EXEC mode.show dvlan-tunnel Display all interfaces enabled for Double VLAN Tunnelingshow dvlan-tunnelinterface {interface |all}Display detailed information about Double VLANTunneling for the specified interface or all interfaces.
