Auxiliary Interface - ZyXEL Communications ZyWall USG 300 User Manual

• Trunks manage load balancing between interfaces.
Port groups, trunks, and the auxiliary interface have a lot of characteristics that
are specific to each type of interface. See
on page 363, and
interfaces--Ethernet, PPP, cellular, VLAN, bridge, and virtual--have a lot of similar
characteristics. These characteristics are listed in the following table and discussed
in more detail below.
Table 56 Ethernet, PPP, Cellular, VLAN, Bridge, and Virtual Interface
Characteristics
CHARACTERISTICS
Name*
IP Address Assignment
Static IP address
DHCP client
Routing metric
Interface Parameters
Bandwidth restrictions Yes
Packet size (MTU)
DHCP
DHCP server
DHCP relay
Connectivity Check
* - 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, limited by the maximum number of each
type of interface). For example, 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 ge1 are called ge1:1, ge1:2, 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 57 Relationships Between Different Types of Interfaces
INTERFACE

auxiliary interface

port group
Ethernet interface
ZyWALL USG 300 User's Guide
Section 13.10 on page 354
ETHERNET PPP
gex pppx
Yes Yes
Yes Yes
Yes Yes
Yes
Yes Yes
Yes No
Yes No
Yes Yes
REQUIRED PORT /
INTERFACE
auxiliary port
physical port
physical port
port group
Chapter 13 Interfaces
Section 13.2 on page
for details. The other types of
CELLULAR VLAN
cellularx vlanx
Yes Yes
Yes Yes
Yes Yes
Yes Yes
Yes Yes
No Yes
No Yes
Yes Yes
293, Chapter 14
BRIDGE VIRTUAL
brx **
Yes Yes
Yes No
Yes Yes
Yes Yes
Yes No
Yes No
Yes No
Yes No
291