Chapter 42 Device HA
ZyWALL USG Series User’s Guide
783
Monitored Interfaces in Device HA
You can select which interfaces Device HA monitors. If a monitored interface on the Zyxel Device loses
its connection, Device HA has the backup Zyxel Device take over.
Enable monitoring for the same interfaces on the master and backup Zyxel Devices. 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 Zyxel Device.
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 known
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 Zyxel Device regardless of whether it is the master or the backup.
For example, Zyxel Device
B
takes over
A
’s 192.168.1.1 LAN interface IP address. This is a virtual router IP
address. Zyxel Device
A
keeps it’s LAN management IP address of 192.168.1.5 and Zyxel Device
B
has its
own LAN management IP address of 192.168.1.6. These do not change when Zyxel Device
B
becomes
the master.
Figure 540
Management IP Addresses
42.3.1 Configuring Device HA
The
Device HA
screen lets you configure general Device HA settings, view and manage the list of
monitored interfaces, and synchronize backup Zyxel Devices. To access this screen, click
Configuration
> Device HA > Device HA
.
192.168.1.1
192.168.1.1
192.168.1.5
192.168.1.6
Summary of Contents for USG110
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