D-Link DWS-3160-24TC DWS-3160 Series Web UI Reference Guide - Page 74
QinQ, Tagged Port T, Forbidden, Port F, Port List, L2 Features > VLAN > Show VLAN Ports
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DWS-3160 Series Gigabit Ethernet Unified Switch Web UI Reference Guide Enter a page number and click the Go button to navigate to a specific page when multiple pages exist. NOTE: The abbreviations used on this page are Tagged Port (T), Untagged Port (U) and Forbidden Port (F). Show VLAN Ports Users can display the VLAN ports of the Switch's viewed by VID. Enter a Port or a Port List in the field at the top of the window and click the Find button. To view the following window, click L2 Features > VLAN > Show VLAN Ports, as show below: Figure 7-24 Show VLAN Ports window Click the View All button to display all the existing entries. Enter a page number and click the Go button to navigate to a specific page when multiple pages exist. QinQ Double or Q-in-Q VLANs allow network providers to expand their VLAN configurations to place customer VLANs within a larger inclusive VLAN, which adds a new layer to the VLAN configuration. This basically lets large ISP's create L2 Virtual Private Networks and also create transparent LANs for their customers, which will connect two or more customer LAN points without over-complicating configurations on the client's side. Not only will overcomplication be avoided, but also now the administrator has over 4000 VLANs in which over 4000 VLANs can be placed, therefore greatly expanding the VLAN network and enabling greater support of customers utilizing multiple VLANs on the network. Double VLANs are basically VLAN tags placed within existing IEEE 802.1Q VLANs which we will call SPVIDs (Service Provider VLAN IDs). These VLANs are marked by a TPID (Tagged Protocol ID), configured in hex form to be encapsulated within the VLAN tag of the packet. This identifies the packet as double-tagged and segregates it from other VLANs on the network, therefore creating a hierarchy of VLANs within a single packet. Here is an example Double VLAN tagged packet. Destination Address Source Address SPVLAN (TPID + Service Provider VLAN Tag) 802.1Q CEVLAN Tag (TPID + Customer VLAN Tag) Ether Type Payload Consider the example below: 69