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Chapter 11 Interfaces
ZyWALL USG 50 User’s Guide
218
* - 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 88 details on the differences between physical ports,
interfaces, and zones in the ZyWALL.
• See Section 6.5.4 on page 96 for related information about the Interface
screens.
• See Section 11.8 on page 266 for background information on interfaces.
• See Section 7.1 on page 109 for an example of configuring Ethernet interfaces,
port role, and zones.
• See Section 7.2 on page 113 for an example of configuring a cellular (3G)
interface.
• See Chapter 12 on page 271 to configure load balancing using trunks.
11.2 Port Role
To access this screen, click Configuration > Network > Interface > Port Role.
Use the Port Role screen to set the ZyWALL’s flexible ports as part of the lan1,
lan2 or dmz interfaces. This creates a hardware connection between the physical
ports at the layer-2 (data link, MAC address) level. This provides wire-speed
throughput but no security.
Note the following if you are configuring from a computer connected to a lan1,
lan2 or dmz port and change the port's role:
PPP interface WAN1, WAN2
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
Table 52 Relationships Between Different Types of Interfaces (continued)
INTERFACE
REQUIRED PORT /
INTERFACE