Relationships Between Interfaces - ZyXEL Communications ZYWALL USG CLI Reference Manual

Chapter 5 Interfaces
** - Cellular interfaces can be added to the WAN zone or no zone.

5.1.2 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.
Table 13 Relationships Between Different Types of Interfaces
INTERFACE
auxiliary interface
port group
Ethernet interface
VLAN interface
bridge interface
PPPoE/PPTP interface
(ZyWALL USG 300 and above)
PPPoE/PPTP interface
(ZyWALL USG 100 and 200
models)
virtual interface
(virtual Ethernet interface)
(virtual VLAN interface)
(virtual bridge interface)
trunk
* - You cannot set up a PPPoE/PPTP 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 PPPoE/PPTP interface on top of it.
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REQUIRED PORT /
INTERFACE
auxiliary port
physical port
physical port
port group
Ethernet interface
Ethernet interface*
WLAN interface*
VLAN interface*
Ethernet interface*
VLAN interface*
bridge interface
WAN1, WAN2, OPT*
Ethernet interface*
VLAN interface*
bridge interface
Ethernet interface
Cellular interface
VLAN interface
bridge interface
PPPoE/PPTP interface
auxiliary interface
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