| Field | Description | 
|---|---|
| Name | (Required) Type a name to identify the new Tunnel Concentrator service. | 
| Description | (Optional) Provide a description that might be helpful when troubleshooting. | 
| Single Tunnel Concentrator | (Required) Select this option to create a single Tunnel Concentrator without redundancy. | 
| Tunnel IP Address/CIDR | (Required) Type the IP Address for the tunnel (CIDR). | 
| Gateway | (Optional) Type the IP address of the gateway. | 
| Native VLAN ID | (Required) Type the Native VLAN ID. The Native VLAN is untagged. | 
| Device Tunnel Concentrator | (Required) Select a Tunnel Concentrator from the menu. | 
| Tunnel Port | (Required) Select a port from the menu. | 
| VLAN ID | (Required) Type the VLAN ID. (Optional) For an untagged VLAN, select the corresponding check box. | 
| Bridge Port | (Required) Select a bridge port for the tunnel from the menu. |