Chapter 10 Interfaces
ZyWALL USG Series User’s Guide
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Note: - * The format of interface names other than the Ethernet and ppp interface names is
strict. Each name consists of 2-4 letters (interface type), followed by a number (x). For
most interfaces, x is limited by the maximum number of the type of interface. For VLAN
interfaces, x is defined by the number you enter in the VLAN name field. For example,
Ethernet interface names are wan1, wan2, lan1, lan2, dmz; VLAN interfaces are vlan0,
vlan1, vlan2,...; and so on.
** - The names of virtual interfaces are derived from the interfaces on which they are
created. For example, virtual interfaces created on Ethernet interface wan1 are called
wan1:1, wan1:2, and so on. Virtual interfaces created on VLAN interface vlan2 are
called vlan2:1, vlan2:2, and so on. You cannot specify the number after the colon(:) in
the Web Configurator; it is a sequential number. You can specify the number after the
colon if you use the CLI to set up a virtual interface.
Relationships Between Interfaces
In the Zyxel Device, 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.
IP Address
Assignment
Static IP address
Yes Yes Yes Yes Yes Yes Yes
DHCP client Yes No Yes Yes Yes Yes No
Routing metric Yes Yes Yes Yes Yes Yes Yes
Interface
Parameters
Bandwidth
restrictions
Yes Yes Yes Yes Yes Yes Yes
Packet size
(MTU)
Yes Yes Yes Yes Yes Yes No
DHCP
DHCP server No
Yes No No Yes Yes No
DHCP relay No Yes No No Yes Yes No
Connectivity Check Yes No Yes Yes Yes Yes No
Table 102 Relationships Between Different Types of Interfaces
INTERFACE REQUIRED PORT / INTERFACE
Ethernet interface physical port
VLAN interface Ethernet interface
bridge interface Ethernet interface*
VLAN interface*
PPP interface Ethernet interface*
VLAN interface*
bridge interface
WAN1, WAN2, OPT*
Table 101 Ethernet, PPP, Cellular, VLAN, Bridge, and Virtual Interface Characteristics (continued)
CHARACTERISTICS ETHERNET ETHERNET PPP CELLULAR VLAN BRIDGE VIRTUAL
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