User`s manual

Tunnel Mode: This is the new command for QinQ. The command includes None,

802.1Q Tunnel and 802.1Q Tunnel Uplink. The figure shows the relationship

between 802.1Q Tunnel and 802.1Q Tunnel Uplink.

The following are the modes you can select.

None: Remain VLAN setting, no QinQ.

802.1Q Tunnel: The QinQ command applied to the ports which connect to the

C-VLAN. The port receives tagged frame from the C-VLAN. Add a new tag (Port

VID) as S-VLAN VID. When the packets are forwarded to C-VLAN, the S-VLAN tag

is removed.

After 802.1Q Tunnel mode is assigned to a port, the egress setting of the port

should be “Untag”, it indicates the egress packet is always untagged. This is

configured in Static VLAN Configuration table. Please refer to the VLAN

Configuration chapter in below.

802.1Q Tunnel Uplink: The QinQ command applied to the ports which connect to

the S-VLAN. The port receives tagged frame from the S-VLAN. When the packets

are forwarded to S-VLAN, the S-VLAN tag is kept.

After 802.1Q Tunnel Uplink mode is assigned to a port, the egress setting of the

port should be “Tag”, it indicates the egress packet is always tagged. This is

configured in Static VLAN Configuration table. Please refer to the VLAN

Configuration chapter in below.

For example, the VID of S-VLAN/Tunnel Uplink is 10, the VID of C-VLAN/Tunnel is

5. The 802.1Q Tunnel port receives tag 5 from C-VLAN, add tag 10 to the packet.

When the packets are forwarded to S-VLAN, tag 10 is kept.

Accept Frame Type: This column defines the accepted frame type of the port.

There are 2 modes you can select, Admit All and Tag Only. Admit All mode means

that the port can accept both tagged and untagged packets. Tag Only mode

means that the port can only accept tagged packets.