D-Link DGS-3426P Product Manual - Page 220
VLAN Translation Settings, VLAN Translation Settings window
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xStack® DGS-3400 Series Layer 2 Gigabit Ethernet Managed Switch Parameter Description QinQ State Use the pull down menu to Enable or Disable the Q-in-Q State. When Q-in-Q is Enabled, all network port roles will have NNI ports and their outer TPID set to 0x88a8. All existing static VLANs will run as SP-VLANs. All dynamically learned L2 addresses and all dynamically registered VLAN entries will be cleared, GVRP will be disabled. According 802.1ad, the address 01-80-c2-00-00-08 will be used for STP in the provider's network. So the user shall disable STP first, and then use the new address for STP state machine. The default setting is Disabled. Unit Select the unit you wish to configure. From / To Role A consecutive group of ports that are part of the VLAN configuration starting with the selected port. The user can choose between UNI or NNI role. UNI - To select a user-to-network interface which specifies that communication between the specified user and a specified network will occur. NNI - To select a network-to-network interface specifies that communication between two specified networks will occur. Missdrop Enable or Disable C-VLAN based on SP-VLAN assignment miss drop. When enabled the tagged packet will be dropped if the VLAN translation look up misses. When disabled the packet will not be dropped if the VLAN translation loop up misses and the packet will be added to an outer VLAN based on MAC/SUBNET/PROTOCOL/PORT based VLAN configuration. This will make the packet a double tagged packet. NOTE: The result will be Transparent Mode behavior. TPID(0x1-0xffff) The Outer TPID is used for learning and switching packets. The Outer TPID constructs and inserts the outer tag into the packet based on the VLAN ID. User Inner Priority Use the drop-down menu to enable or disable the function. When enabled, the priority of C-tag copies to S-tag. Click Apply to implement the changes. VLAN Translation Settings The VLAN translation settings translates the VLAN ID carried in the data packets it receives from private networks into those used in the Service Providers network. To view this window, click L2 Features > QinQ > VLAN Translation Settings, as shown below. Figure 3 - 75 VLAN Translation Settings window 211