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Chapter 10 Interface
ZyWALL USG 100/200 Series User’s Guide
201
Trunks and the auxiliary interface have many characteristics that are specific to each type of
interface. See Chapter 11 on page 269 and Section 10.14 on page 261 for details. The other
types of interfaces--Ethernet, VLAN, bridge, PPPoE/PPTP, and virtual--have a lot of similar
characteristics. These characteristics are listed in the following table and discussed in more
detail below.
* - 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, opt, lan1, ext-
wlan, 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 (multiple ports using
the same port role). The relationships between interfaces are explained in the following table.
Table 46 Ethernet, VLAN, Bridge, PPP, and Virtual Interfaces Characteristics
CHARACTERISTICS ETHERNET ETHERNET ETHERNET VLAN BRIDGE PPP VIRTUAL
Name* opt wan1, wan2 lan1, ext-
wlan, dmz
vlanx brx pppx **
Configurable Zone Yes No No Yes Yes No No
IP Address
Assignment
Static IP address
Yes Yes Yes Yes Yes Yes Yes
DHCP client Yes Yes No 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 Yes No Yes Yes Yes No No
DHCP relay
Yes No Yes Yes Yes No No
Connectivity Check Yes Yes No Yes Yes Yes No
Table 47 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*