ZyWALL User's Guide

Chapter 34 Device HA

ZyWALL USG 100/200 Series User’s Guide

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Enable monitoring for the same interfaces on the master and backup ZyWALLs. Each

monitored interface must have a static IP address and be connected to the same subnet as the

corresponding interface on the backup or master ZyWALL.

Virtual Router and Management IP Addresses

• If a backup takes over for the master, it uses the master’s IP addresses. These IP addresses

are know as the virtual router IP addresses.

• Each interface can also have a management IP address. You can connect to this IP address

to manage the ZyWALL regardless of whether it is the master or the backup.

For example, ZyWALL B takes over A’s 192.168.1.1 LAN interface IP address. This is a

virtual router IP address. ZyWALL A keeps it’s LAN management IP address of 192.168.1.5

and ZyWALL B has its own LAN management IP address of 192.168.1.6. These do not

change when ZyWALL B becomes the master.

Figure 434 Management IP Addresses

34.3.1 Configuring Active-Passive Mode Device HA

The Device HA Active-Passive Mode screen lets you configure general active-passive mode

device HA settings, view and manage the list of monitored interfaces, and synchronize backup

ZyWALLs. To access this screen, click Device HA > Active-Passive Mode.

192.168.1.1

192.168.1.5

192.168.1.6