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Chapter 6 Interfaces
ZyWALL (ZLD) CLI Reference Guide
56
6.1.2 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.
* - 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.
Table 14 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*
PPPoE/PPTP interface (ZyWALL
USG 300 and above)
Ethernet interface*
VLAN interface*
bridge interface
PPPoE/PPTP interface (ZyWALL
USG 200 and below models)
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
PPPoE/PPTP interface
auxiliary interface