The router supports VLAN double tagging ("stacked VLAN") or Q-in-Q VLAN according to IEEE 802.1ad on WAN connections. With Q-in-Q VLAN, service providers support layer-2 Ethernet connections between customer sites and so that the customer's own VLAN can be transmitted unmodified. The inner VLAN (C-VLAN) is used by the customer, the outer VLAN (S-VLAN) by the service provider.
LANconfig:
- S-VLAN ID
- Here you configure the S-VLAN for VLAN double tagging (Q-in-Q VLAN connections according to IEEE 802.1ad). The VLAN is also referred to as the outer VLAN. The S-VLAN protocol ID that is used can be configured under .
LANconfig:
- S-VLAN protocol ID
- Defines the VLAN tagging ID for Q-in-Q VLAN tagging. The Ethernet2 type of the VLAN tag is a "tag value" configured as a 16-bit hexadecimal value. The default according to IEEE 802.1ad is "88a8", and another common value for VLAN tagging would be "8100", for example.
