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Verifying That Q-in-Q Tunneling Is Working

Purpose

After creating a Q-in-Q VLAN, verify that it is set up properly.

Action

Use the show configuration vlans command to determine if you successfully created the primary and secondary VLAN configurations:
user@switch> show configuration vlans
```
svlan {
   vlan-id 300;
   dot1q-tunneling {
      customer-vlans [ 101–200 ];
   }
}
```

Use the show vlans command to view VLAN information and link status:

user@switch> show vlans s-vlan-name extensive

VLAN: svlan, Created at: Thu Oct 23 16:53:20 2008
802.1Q Tag: 300, Internal index: 2, Admin State: Enabled, Origin: Static
Dot1q Tunneling Status: Enabled
Customer VLAN ranges:
                     101–200
Protocol: Port Mode
Number of interfaces: Tagged 1 (Active = 0), Untagged  1 (Active = 0)
      xe-0/0/1, tagged, trunk
      xe-0/0/2, untagged, access

Meaning

The output confirms that Q-in-Q tunnling is enabled and that the VLAN is tagged, and lists the customer VLANs that are associated with the tagged VLAN.