Managing VLANs
D-Link Unified Wired and Wireless Access System
Oct. 2015 Page 196
D-Link UWS User Manual
Double VLAN Tunneling
Double VLAN Tunneling allows the use of a second tag on network traffic. The additional tag helps differentiate
between customers in the Metropolitan Area Networks (MAN) while preserving individual customer’s VLAN
identification when they enter their own 802.1Q domain.
With the introduction of this second tag, you do not need to divide the 4k VLAN ID space to send traffic on an
Ethernet-based MAN.
With Double VLAN Tunneling enabled, every frame that is transmitted from an interface has a DVlan Tag
attached while every packet that is received from an interface has a tag removed (if one or more tags are
present).
Use the Double VLAN Tunneling page to configure Double VLAN frame tagging on one or more ports.
To access the Double VLAN Tunneling page, click LAN > L2 Features > VLAN > Double VLAN in the navigation
tree.
Figure 106: Double VLAN Tunneling
• If you make any changes to the page, click Submit to apply the changes to the system.
Table 92: Double VLAN Tunneling Fields
Field Description
Interface Select the physical interface for which you want to display or configure data.
Select All to set the parameters for all ports to same values.
Interface Mode This specifies the administrative mode for Double VLAN Tagging:
• Enable: Double VLAN Tagging is enabled for the specified port (or All
ports).
• Disable: Double VLAN Tagging is disabled for the specified port (or All
ports), which is the default value.
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