ZyXEL Communications 1000 User Manual

Chapter 13 Interfaces

ZyWALL USG 1000 User’s Guide

cannot change the MTU. The virtual interface uses the same MTU that the 
underlying interface uses. Unlike other interfaces, virtual interfaces do not provide 
DHCP services, and they do not verify that the gateway is available.

This screen lets you configure IP address assignment and interface parameters for 
virtual interfaces. To access this screen, click an Add icon next to an Ethernet 
interface, VLAN interface, or bridge interface in the respective interface summary 
screen.

Figure 264   Configuration > Network > Interface > Add

Each field is described in the table below. 

Table 74   Configuration > Network > Interface > Add

Interface 
Properties

Interface 

Name

This field is read-only. It displays the name of the virtual interface, 
which is automatically derived from the underlying Ethernet interface, 
VLAN interface, or bridge interface.

Description

Enter a description of this interface. It is not used elsewhere. You can 
use alphanumeric and 

()+/:=?!*#@$_%-

 characters, and it can be 

up to 60 characters long.

IP Address 
Assignment

IP Address

Enter the IP address for this interface.

Subnet Mask

Enter the subnet mask of this interface in dot decimal notation. The 
subnet mask indicates what part of the IP address is the same for all 
computers in the network.

Gateway

Enter the IP address of the gateway. The ZyWALL sends packets to 
the gateway when it does not know how to route the packet to its 
destination. The gateway should be on the same network as the 
interface.