Chapter 9 Interfaces
USG20(W)-VPN Series User’s Guide
143
characteristics. These characteristics are listed in the following table and discussed in more detail
below.
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 60
Ethernet, PPP, Cellular, VLAN, Bridge, and Virtual Interface Characteristics
CHARACTERISTICS
ETHERNET
ETHERNET
PPP
CELLULAR
VLAN
BRIDGE
VIRTUAL
Name*
wan1, wan2
lan1, lan2,
dmz
ppp
x
cellularx
vlan
x
br
x
**
Configurable Zone
No
No
Yes
Yes
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
Yes
Yes
Yes
No
Table 61
Relationships Between Different Types of Interfaces
INTERFACE
REQUIRED PORT / INTERFACE
Ethernet interface
physical port
VLAN interface
Ethernet interface
bridge interface
Ethernet interface*
VLAN interface*
Summary of Contents for ZyWall USG20-VPN
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