Basic QinQ is also called common QinQ and is implemented based on interfaces. When an interface enabled with basic QinQ receives a packet, the device tags the packets with the default VLAN ID of the interface.
- If the received packet carries one VLAN tag, the packet then has double tags.
- If the received packet does not carry any VLAN tag, the packet then carries the default VLAN tag of an interface.
# Create VLAN 10 in the outer tag.
<HUAWEI> system-view [HUAWEI] vlan 10 [HUAWEI-vlan10] quit
# Configure downlink interface GE1/0/1.
[HUAWEI] interface gigabitethernet1/0/1 [HUAWEI-GigabitEthernet1/0/1] port link-type dot1q-tunnel //Set the link type to Dot1q-tunnel. [HUAWEI-GigabitEthernet1/0/1] port default vlan 10 //GE1/0/1 tags all received data packets with VLAN 10.
# Configure uplink interface GE1/0/2 to transparently transmit packets with VLAN 10 in the outer tag.
[HUAWEI] interface gigabitethernet1/0/2 [HUAWEI-GigabitEthernet1/0/2] port link-type trunk [HUAWEI-GigabitEthernet1/0/2] port trunk allow-pass vlan 10
More Information: S Series Switches Common Operation Guide
