Dell N3200-ON Networking N-Series Switches CLI Reference Guide version 6.8.0 - Page 907

The outer VLAN tag in tagged packets received on the interface is compared against the configured list of TPIDs. Frames that do not match any of the configured TPIDs are forwarded normally, i.e. without QinQ processing. Frames transmitted on the interface are always transmitted with the primary TPID inserted in the outer VLAN tag. Use the no form of the command to remove the TPID from an interface. Defining a new primary TPID command overwrites the existing primary TPID for an interface. The no form of the command with the optional primary TPID specified sets the primary TPID value to 802.1Q (0x8100). If the TPID value was not configured as a primary TPID and the no form the command includes the optional primary-tpid argument, the command will fail. If the TPID value was configured as the primary TPID, and the no form of the command does not include the optional primary-tpid argument, the command will fail. If a TPID value is configured as the primary TPID, and it is added again without the primary-tpid optional argument, the TPID will be treated as the primary TPID (the primary TPID includes the behavior of secondary TPIDs). It is not possible to configure an inner VLAN TPID value. The inner VLAN TPID value is always 802.1Q (0x8100). Example This example defines the VMAN (0x88A8) TPID for use on a service provider port and configures a service provider port (Te1/0/1) in general mode. The general mode port is configured to only allow tagged packets on ingress using VLAN ID 10. Then, in the last command, the port is configured to accept the VMAN TPID in the outer VLAN on ingress and further configured to tag packets with the VMAN TPID in the outer VLAN tag on egress. console(config)#switchport dot1q ethertype vman console(config)#vlan 10 console(config-vlan10)#exit console(config)#interface te1/0/1 console(config-if-Te1/0/1)#switchport mode general console(config-if-Te1/0/1)#switchport general allowed vlan add 10 tagged console(config-if-Te1/0/1)#switchport dot1q ethertype vman primary-tpid Layer 2 Switching Commands 907