ZyXEL Communications 91-009-073003B manual 217

Chapter 11 Interfaces

virtual--have a lot of similar characteristics. These characteristics are listed in the following table and discussed in more detail below.

Table 51 Ethernet, PPP, Cellular, VLAN, Bridge, and Virtual Interface Characteristics

CHARACTERISTICS	ETHERNET	ETHERNET	PPP	CELLU	VLAN	BRIDGE	VIRTUAL
				LAR
Name*	wan1,	lan1, lan2,	pppx	cellularx	vlanx	brx	**
	wan2	dmz
Configurable Zone	No	No	No	No	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	Yes	Yes	Yes	Yes	Yes	Yes	Yes
restrictions
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	No	Yes	Yes	No

-* 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 52 Relationships Between Different Types of Interfaces

INTERFACE	REQUIRED PORT /
	INTERFACE
port group	physical port
Ethernet interface	physical port
	port group
VLAN interface	Ethernet interface
bridge interface	Ethernet interface*
	VLAN interface*

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ZyWALL USG 50 User’s Guide