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Chapter 11 Interfaces
ZyWALL USG 50 User’s Guide
217
virtual--have a lot of similar characteristics. These characteristics are listed in the
following table and discussed in more detail below.
- * 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 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 51 Ethernet, PPP, Cellular, VLAN, Bridge, and Virtual Interface Characteristics
CHARACTERISTICS ETHERNET ETHERNET PPP
CELLU
LAR
VLAN BRIDGE VIRTUAL
Name* wan1,
wan2
lan1, lan2,
dmz
pppx cellularx vlanx brx **
Configurable Zone No No No No Yes Yes No
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 No Yes Yes No
Table 52 Relationships Between Different Types of Interfaces
INTERFACE
REQUIRED PORT /
INTERFACE
port group physical port
Ethernet interface physical port
port group
VLAN interface Ethernet interface
bridge interface Ethernet interface*
VLAN interface*