Configuring the TPID for VLAN-tagged packets
TPID identifies whether or not a frame contains VLAN tags. By default, the value of 0x8100 identifies an IEEE 802.1Q-tagged frame. You can set another TPID value to identify VLAN-tagged packets.
To work with VLAN termination on a subinterface, set the TPID value in the outermost VLAN tag of packets on the main interface of the subinterface.
The interface processes packets as untagged packets if their outermost VLAN tag is not 0x8100 or the configured value.
When sending a packet, the interface sets the TPID value in the outermost VLAN tag to the configured value. If the packet includes two or more layers of VLAN tags, the interface sets the TPID values to 0x8100 in all VLAN tags except the outermost VLAN tag.
To set the TPID value for VLAN-tagged packets:
Step | Command | Remarks |
---|---|---|
1. Enter system view. | system-view | N/A |
2. Enter interface view. |
| Configurations made in the following views take effect on all the subinterfaces:
|
3. Set the TPID value in the outermost VLAN tag of packets received and sent by the interface. | dot1q ethernet-type hex-value | The default setting is 0x8100. |