ZyXEL Communications USG-100@USG-200 - V2.20 ED 2 - Page 300

Chapter 13 Interfaces
ZyWALL USG 100/200 Series User’s Guide
300
Relationships Between Interfaces
In the ZyWALL, interfaces are usually created on top of other interfaces. Only
Ethernet interfaces are created directly on top of the physical ports or port groups.
The relationships between interfaces are explained in the following table.
* - You cannot set up a PPP interface, virtual Ethernet interface or virtual VLAN interface if the underlying
interface is a member of a bridge. You also cannot add an Ethernet interface or VLAN interface to a
bridge if the member interface has a virtual interface or PPP interface on top of it.
Finding Out More
• See Section 6.2 on page 94 details on the differences between physical ports,
interfaces, and zones in the ZyWALL.
• See Section 6.5.4 on page 104 for related information about the Interface
screens.
• See Section 13.12 on page 367 for background information on interfaces.
Table 60 Relationships Between Different Types of Interfaces
INTERFACE
REQUIRED PORT /
INTERFACE
auxiliary interface auxiliary port
port group physical port
Ethernet interface physical port
port group
VLAN interface Ethernet interface
bridge interface Ethernet interface*
WLAN interface*
VLAN interface*
PPP interface WAN1, WAN2, OPT*
virtual interface
(virtual Ethernet
interface)
(virtual VLAN interface)
(virtual bridge
interface)
Ethernet interface*
VLAN interface*
bridge interface
trunk Ethernet interface
Cellular interface
VLAN interface
bridge interface
PPP interface
auxiliary interface