584 Configuring VLANs
Double VLAN Global Configuration
Use the Double VLAN Global Configuration page to specify the value of the 
EtherType field in the first EtherType/tag pair of the double-tagged frame.
To display the Double VLAN Global Configuration page, click Switching 
→
 
VLAN 
→
 Double VLAN 
→ 
Global Configuration in the navigation panel.
Figure 22-22. Double VLAN Global Configuration