Chapter 10 Interface

Trunks and the auxiliary interface have many characteristics that are specific to each type of interface. See Chapter 11 on page 269 and Section 10.14 on page 261 for details. The other types of interfaces--Ethernet, VLAN, bridge, PPPoE/PPTP, and virtual--have a lot of similar characteristics. These characteristics are listed in the following table and discussed in more detail below.

Table 46 Ethernet, VLAN, Bridge, PPP, and Virtual Interfaces Characteristics

CHARACTERISTICS

ETHERNET

ETHERNET

ETHERNET

VLAN

BRIDGE

PPP

VIRTUAL

Name*

opt

wan1, wan2

lan1, ext-

vlanx

brx

pppx

**

 

 

 

wlan, dmz

 

 

 

 

 

 

 

 

 

 

 

 

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

Yes

Yes

Yes

Yes

Yes

Yes

Yes

restrictions

 

 

 

 

 

 

 

Packet size

Yes

Yes

Yes

Yes

Yes

Yes

No

(MTU)

 

 

 

 

 

 

 

DHCP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DHCP server

Yes

No

Yes

Yes

Yes

No

No

DHCP relay

Yes

No

Yes

Yes

Yes

No

No

Connectivity Check

Yes

Yes

No

Yes

Yes

Yes

No

 

 

 

 

 

 

 

 

*- 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, opt, lan1, ext- wlan, 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 (multiple ports using the same port role). The relationships between interfaces are explained in the following table.

Table 47 Relationships Between Different Types of Interfaces

INTERFACE

REQUIRED PORT / INTERFACE

auxiliary interface

auxiliary port

 

 

port group

physical port

 

 

Ethernet interface

physical port

 

port group

 

 

VLAN interface

Ethernet interface

 

 

bridge interface

Ethernet interface*

 

WLAN interface*

 

VLAN interface*

 

 

 

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ZyWALL USG 100/200 Series User’s Guide