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Chapter 11 Interfaces

ZyWALL USG 50 User’s Guide

• Between the router and VLAN 3.

In the ZyWALL, each VLAN is called a VLAN interface. As a router, the ZyWALL 
routes traffic between VLAN interfaces, but it does not route traffic within a VLAN 
interface. All traffic for each VLAN interface can go through only one Ethernet 
interface, though each Ethernet interface can have one or more VLAN interfaces.

Note: Each VLAN interface is created on top of only one Ethernet interface.

Otherwise, VLAN interfaces are similar to other interfaces in many ways. They 
have an IP address, subnet mask, and gateway used to make routing decisions. 
They restrict bandwidth and packet size. They can provide DHCP services, and 
they can verify the gateway is available.

This screen lists every VLAN interface and virtual interface created on top of VLAN 
interfaces. To access this screen, click Configuration > Network > Interface > 
VLAN.

Figure 162   Configuration > Network > Interface > VLAN   

Each field is explained in the following table.  

Table 62   Configuration > Network > Interface > VLAN

Edit

Double-click an entry or select it and click Edit to open a screen where you 
can modify the entry’s settings. 

Remove

To remove an entry, select it and click Remove. The ZyWALL confirms you 
want to remove it before doing so.

Activate

To turn on an entry, select it and click Activate.

Inactivate

To turn off an entry, select it and click Inactivate.

Create 
Virtual 
Interface

To open the screen where you can create a virtual interface, select an 
interface and click Create Virtual Interface.