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Configure Q-in-Q Tunneling on a Switch Port

Follow these steps to configure Q-in-Q tunneling to segregate or bundle customer traffic into fewer VLANs or different VLANs.

You can configure switch ports with Q-in-Q tunneling that uses all-in-one bundling. Q-in-Q tunneling enables Layer 2 protocol tunneling (L2PT) on interfaces that are not encapsulation tunnels, and utilizes MAC address rewrite operation.

Using Q-in-Q tunneling, providers can segregate or bundle customer traffic into fewer VLANs or different VLANs by adding another layer of 802.1Q tags. Q-in-Q tunneling is useful when customers have overlapping VLAN IDs, because the customer’s 802.1Q VLAN tags are prepended by the service VLAN (S-VLAN) tag.

You can configure Q-in-Q tunneling under Port Configuration at the switch level, site level, or organization level. The configuration includes selecting Q-in-Q as Configuration Profile, choosing a Port Network (S-VLAN), and specifying other port configuration parameters.

To configure Q-in-Q tunneling in a switch port:

  1. Click Switches and select.
  2. From the Site drop-down list, select a site.
    The list of switches in the selected site appears.
  3. Click the switch on which you want to configure Q-in-Q tunneling.
    The switch details page appears.
  4. On the Port tile in the Device section, click Add Port Configuration.
    The New Port Configuration window appears.
  5. From the Configuration Profile drop-down list, select Q-in-Q.
  6. Specify the ports on which you want to enable Q-in-Q tunneling, along with other details. The following are the key configuration fields:

    • Port IDs—Specify the port IDs on which you want to configure Q-in-Q tunneling.

    • Interface—Select L2 interface as the interface type.

    • Port Network (S-VLAN)—Specify a service VLAN (S-VLAN) if the port is using Q-in-Q tunneling. S-VLAN is an external, additional VLAN tag used to extend Layer 2 Ethernet connections between customer sites. This is especially useful when customers have overlapping VLAN IDs.

    For descriptions of all the fields available on the New Port Configuration window, refer to Table 6.

  7. Select the check mark on the upper right of the New Port Configuration window to add the port configuration.
  8. Click Save.

You can configure Q-in-Q tunneling via the organization level templates (Organization > Switch Templates) and site level templates (Organization > Site Configuration) as well. The settings are available on the Port Config tab accessed by clicking the Add Rule option in the Select Switches Configuration section of the templates.