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ZyWALL USG 300 User’s Guide
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CHAPTER 39
Device HA
39.1 Overview
Device HA lets a backup ZyWALL (B) automatically take over if the master
ZyWALL (A) fails.
Figure 473 Device HA Backup Taking Over for the Master
39.1.1 What You Can Do in this Chapter
•Use the General screen (Section 39.2 on page 695) to configure device HA
global settings, and see the status of each interface monitored by device HA.
•Use the Active-Passive Mode screens (Section 39.3 on page 696) 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.
•Use the Legacy Mode screens (Section 39.5 on page 703) to use legacy mode
device HA. You can configure general legacy mode HA settings including link
monitoring, configure the VRRP group settings and synchronize backup
ZyWALLs.
39.1.2 What You Need to Know
Active-Passive Mode and Legacy Mode
• Active-passive mode lets a backup ZyWALL take over if the master ZyWALL
fails.
A
B