DGS-3630 Series Layer 3 Stackable Managed Switch Web UI Reference Guide 
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Only configure the 802.1Q tunneling Ethernet type on ports that are connected to the provider bridge network, which 
receives and transmits the service VLAN tagged frames. If the tunnel Ethernet type is configured, the specified value 
will be the Tag Protocol ID (TPID) in the outer VLAN tag of the transmitted frames of the port. The specified TPID is 
also used to identify the service VLAN tag for the received frame on this port. 
To view the following window, click L2 Features > VLAN Tunnel > Dot1q Tunnel, as shown below: 
 
Figure 5-42 Dot1q Tunnel Window 
 
The fields that can be configured are described below: 
Parameter  Description 
Inner TPID 
Enter the inner TPID value here. This value is in the hexadecimal form. The range 
is from 0x1 to 0xFFFF. The inner TPID is used to decide if the ingress packet is 
C-tagged. The inner TPID can be configured per system. 
Unit 
Select the Switch unit ID that will be used here. 
From Port - To Port 
Select the port range that will be used here. 
Outer TPID 
Enter the outer TPID value here. This value is in the hexadecimal form. The range 
is from 0x1 to 0xFFFF. 
Click the Apply button to accept the changes made. 
 
After clicking the Dot1q Tunnel Port Settings tab, the following page will appear: