LevelOne GTL-2691 - Manual (Page 223)

C HAPTER 6 | VLAN Configuration
Protocol VLANs
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Uplink – Configures QinQ tunneling for an uplink port to another
device within the service provider network.
W EB I NTERFACE
To add an interface to a QinQ tunnel:
1. Click VLAN, Tunnel.
2. Select Configure Interface from the Step list.
3. Set the mode for any tunnel access port to Access and the tunnel uplink
port to Uplink.
4.
Click Apply.
Figure 82: Adding an Interface to a QinQ Tunnel
P ROTOCOL VLAN S
The network devices required to support multiple protocols cannot be
easily grouped into a common VLAN. This may require non-standard
devices to pass traffic between different VLANs in order to encompass all
the devices participating in a specific protocol. This kind of configuration
deprives users of the basic benefits of VLANs, including security and easy
accessibility.
To avoid these problems, you can configure this switch with protocol-based
VLANs that divide the physical network into logical VLAN groups for each
required protocol. When a frame is received at a port, its VLAN
membership can then be determined based on the protocol type being
used by the inbound packets.