D-Link DGS-3700-12, Руководство пользователя

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DGS-3700-12/DGS-3700-12G Series Layer 2 Gigabit Ethernet User Manual
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Figure 4- 23 Browse VLAN window
Show VLAN Ports
This window displays the relationship between Switch’s ports and VLANs. Select a port from the drop-down menu and
click the
Find button. The given port’s VLAN information will be shown.
To view this window, click L2 Features > VLAN > Show VLAN Ports , as shown below:
Figure 4- 24 Show VLAN Ports window
Q-in-Q
The Q-in-Q section includes Q-in-Q Settings and VLAN Translation Settings.
Q-in-Q Settings
This function allows the user to enable or disable the Q-in-Q function. Q-in-Q is designed for service providers to carry
traffic from multiple users across a network. Q-in-Q is used to maintain customer specific VLAN and Layer 2 protocol
configurations even when the same VLAN ID is being used by different customers. This is achieved by inserting
SPVLAN tags into the customer’s frames when they enter the service provider’s network, and then removing the tags
when the frames leave the network.
Customers of a service provider may have different or specific requirements regarding their internal VLAN IDs and the
number of VLANs that can be supported. Therefore customers in the same service provider network may have VLAN
ranges that overlap, which might cause traffic to become mixed up. So assigning a unique range of VLAN IDs to each
customer might cause restrictions on some of their configurations requiring intense processing of VLAN mapping