ZyXEL Communications ZyWall USG20-VPN User Manual page 143

characteristics. These characteristics are listed in the following table and discussed in more detail
below.
Table 60 Ethernet, PPP, Cellular, VLAN, Bridge, and Virtual Interface Characteristics
CHARACTERISTICS
Name*
Configurable Zone
IP Address Assignment
Static IP address
DHCP client
Routing metric
Interface Parameters
Bandwidth
restrictions
Packet size (MTU)
DHCP
DHCP server
DHCP relay
Connectivity Check
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 USG, 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 61 Relationships Between Different Types of Interfaces
INTERFACE
Ethernet interface
VLAN interface
bridge interface
Chapter 9 Interfaces
ETHERNET ETHERNET
wan1, wan2 lan1, lan2,
dmz
No No
Yes Yes
Yes No
Yes Yes
Yes Yes
Yes Yes
No Yes
No Yes
Yes No
REQUIRED PORT / INTERFACE
physical port
Ethernet interface
Ethernet interface*
VLAN interface*
USG20(W)-VPN Series User's Guide
143
PPP CELLULAR VLAN
pppx cellularx vlanx
Yes Yes Yes
Yes Yes Yes
Yes Yes Yes
Yes Yes Yes
Yes Yes Yes
Yes Yes Yes
No No Yes
No No Yes
Yes Yes Yes
BRIDGE VIRTUAL
brx **
Yes No
Yes Yes
Yes No
Yes Yes
Yes Yes
Yes No
Yes No
Yes No
Yes No