ZyXEL Communications 3.1 User Manual
Chapter 6 Interfaces
ZyWALL (ZLD) CLI Reference Guide
54
• The auxiliary interface, along with an external modem, provides an interface the ZyWALL can
use to dial out. This interface can be used as a backup WAN interface, for example. The auxiliary
interface controls the DIAL BACKUP port (labeled AUX on some models).
interface controls the DIAL BACKUP port (labeled AUX on some models).
• 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. These characteristics are listed in the following tables and discussed in more
detail farther on.
type of interface. These characteristics are listed in the following tables and discussed in more
detail farther on.
* - The format of 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, Ethernet interface names are ge1, ge2,
ge3, ...; VLAN interfaces are vlan0, vlan1, vlan2, ...; and so on.
ge3, ...; 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 Parameters
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 Parameters
Table 11
Characteristics of Ethernet, VLAN, Bridge, PPPoE/PPTP, and Virtual Interface (ZyWALL
USG 300 and Above)
CHARACTERISTICS
ETHERNET
VLAN
BRIDGE
PPPOE/PPTP
VIRTUAL
Name*
gex
vlanx
brx
pppx
**
IP Address Assignment
static IP address
Yes
Yes
Yes
Yes
Yes
DHCP client
Yes
Yes
Yes
Yes
No
routing metric
Yes
Yes
Yes
Yes
Yes
Interface Parameters
bandwidth restrictions
Yes
Yes
Yes
Yes
Yes
packet size (MTU)
Yes
Yes
Yes
Yes
No
data size (MSS)
Yes
Yes
Yes
Yes
No
traffic prioritization
Yes
Yes
Yes
Yes
No
DHCP
DHCP server
Yes
Yes
Yes
No
No
DHCP relay
Yes
Yes
Yes
No
No
Ping Check
Yes
Yes
Yes
Yes
No
Table 12
Ethernet, VLAN, Bridge, PPP, and Virtual Interface Characteristics (ZyWALL USG 200 and
Below Models)
CHARACTERISTICS
ETHERNET
ETHERNET
ETHERNET
VLAN
BRIDGE
PPP
VIRTUAL
Name*
opt
wan1, wan2
lan1, ext-
wlan, dmz
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