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ZyXEL Communications 1000 User Manual

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ZyWALL USG 1000 User’s Guide
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 3 9  
Device HA
39.1  Overview
Device HA lets a backup ZyWALL (B) automatically take over if the master 
ZyWALL (A) fails.  
Figure 449   Device HA Backup Taking Over for the Master
39.1.1  What You Can Do in this Chapter
• Use  the  General screen (
) to configure device HA 
global settings, and see the status of each interface monitored by device HA.
• Use  the  Active-Passive Mode screens (
) 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 (
) 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