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Versa Networks

Configure Q-in-Q Inner VLAN Tagging in Concerto

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IEEE 802.1Q tunneling, commonly called Q-in-Q, extends VLANs between different enterprises in a service provider network. You configure Q-in-Q by defining an inner VLAN ID in addition to the regular VLAN ID for a WAN or LAN interface. The two VLAN tags are used to identify a logical interface. Versa Q-in-Q allows you to use the full VLAN space (4096 x 4096) as a single addressing and segmentation space, and it allows you to classify and forward packets using any Q-in-Q VLAN values.

The example below illustrates Q-in-Q. Here, a service provider has two customers, Acme and ABC, and each of the customers has two locations, Acme-1 and Acme-2, and ABC-1 and ABC-2. Both customers use VLAN IDs 10 and 20 for the traffic between their sites. To separate the traffic of the two customers, the service provider inserts a second, inner VLAN ID that is unique to each customer. For customer Acme, the service provider creates VLAN 100, which includes Acme's VLAN IDs 10 and 20. Likewise, the service provider creates VLAN 200 for customer ABC that includes ABC's VLAN IDs 10 and 20. The inner VLAN tags (100 and 200) are added when the traffic enters the service provider's network and is removed when the traffic exits the service provider's network. In this way, the service provider can separate and transport the traffic for each customer even though they use the same VLAN IDs (VLAN 10 and VLAN 20).

 

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To configure Q-in-Q inner VLAN tagging:

  1. In the Tenant view for the SD-WAN tenant, click the Configuration lifecycle in the left menu bar.
  2. Select the master profile that contains the interface on which to configure Q-in-Q tagging.
  3. Select the General tab in the Create Interface screen, and enter information for the following fields.

    create-interface-QinQ-border.png
     
    Field Description
    Name Enter a name for the interface.
    Type Click the slider to Physical.
    Enabled Click the slider to Enabled.
    Category

    Select the interface category. Q-in-Q VLAN tagging is supported on the following types of interfaces:

    • LAN—AE, AE subinterface, IRB, wired
    • Redundant WAN—IRB, wired
    • WAN—IRB, wired
    Subcategory Select Wired.
    Location Select the location of the interface.
    VLAN ID

    Enter the VLAN ID of the interface.

    Range: 0 through 4094

    Default: None

    Inner VLAN ID

    Enter the inner VLAN ID of the interface. Note that the Inner VLAN ID field is not visible until you enter a VLAN ID.

    Range: 0 through 4094

    Default: None

  4. Configure the remaining interface details as desired.
  5. Select the Permissions tab, and then click Save.

Supported Software Information

Releases 11.3.1 and later support all content described in this article.

Additional Information

Configure Appliances and Hubs