Relationships Between Interfaces - ZyXEL Communications ZyWALL USG 50 User Manual

virtual--have a lot of similar characteristics. These characteristics are listed in the
following table and discussed in more detail below.
Table 52 Ethernet, PPP, Cellular, VLAN, Bridge, and Virtual Interface Characteristics
CHARACTERISTICS ETHERNET ETHERNET PPP
Name* wan1,
wan2
Configurable Zone No
IP Address
Assignment
Static IP address Yes
DHCP client Yes
Routing metric Yes
Interface Parameters
Bandwidth Yes
restrictions
Packet size (MTU) Yes
DHCP
DHCP server No
DHCP relay No
Connectivity Check Yes
- * 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 53 Relationships Between Different Types of Interfaces
INTERFACE
port group
Ethernet interface
VLAN interface
bridge interface
ZyWALL USG 50 User's Guide
CELLU
LAR
lan1, lan2, pppx cellularx vlanx
dmz
No No No
Yes Yes Yes
No Yes Yes
Yes Yes Yes
Yes Yes Yes
Yes Yes Yes
Yes No No
Yes No No
No Yes No
REQUIRED PORT /
INTERFACE
physical port
physical port
port group
Ethernet interface
Ethernet interface*
VLAN interface*
Chapter 11 Interfaces
VLAN BRIDGE VIRTUAL
brx **
Yes Yes No
Yes Yes Yes
Yes Yes No
Yes Yes Yes
Yes Yes Yes
Yes Yes No
Yes Yes No
Yes Yes No
Yes Yes No
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