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ZyWALL 110/310/1100 Series User’s Guide 359
CHAPTER 26
Device HA
26.1 Overview
Device HA lets a backup ZyWALL (B) automatically take over if the master ZyWALL (A) fails.
Figure 235 Device HA Backup Taking Over for the Master
26.1.1 What You Can Do in this Chapter
•Use the General screen (Section 26.2 on page 360) to configure device HA global settings, and
see the status of each interface monitored by device HA.
•Use the Active-Passive Mode screens (Section 26.3 on page 361) to use active-passive mode
device HA. You can configure general active-passive mode device HA settings, view and manage
the list of monitored interfaces, and synchronize backup ZyWALLs.
26.1.2 What You Need to Know
Active-Passive Mode
• Active-passive mode lets a backup ZyWALL take over if the master ZyWALL fails.
Management Access
You can configure a separate management IP address for each interface. You can use it to access
the ZyWALL for management whether the ZyWALL is the master or a backup. The management IP
address should be in the same subnet as the interface IP address.
Synchronization
Use synchronization to have a backup ZyWALL copy the master ZyWALL’s configuration, and
certificates.
A
B