Device Ha; Overview; What You Can Do In The Device Ha Screens; What You Need To Know About Device Ha - ZyXEL Communications 200 Series User Manual

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34.1 Overview

Device HA lets a backup ZyWALL (B) automatically take over if a master ZyWALL (A) fails.

Figure 430 Device HA Backup Taking Over for the Master

34.1.1 What You Can Do in the Device HA Screens

• Use the General screen
settings, and see the status of each interface monitored by device HA.
• Use the Active-Passive Mode screens
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
You can configure general legacy mode HA settings including link monitoring, configure
the VRRP group settings and synchronize backup ZyWALLs.

34.1.2 What You Need to Know About Device HA

Active-Passive Mode and Legacy Mode
• Active-passive mode lets a backup ZyWALL take over if the master ZyWALL fails.
• Legacy mode allows for more complex relationships between the master and backup
ZyWALLs, such as active-active or using different ZyWALLs as the master ZyWALL for
individual interfaces. Legacy mode configuration involves a greater degree of complexity.
Active-passive mode is recommended for general failover deployments.
• The ZyWALLs must all support and be set to use the same device HA mode (either active-
passive or legacy).
ZyWALL USG 100/200 Series User's Guide
A
B
(Section 34.2 on page 576) to configure device HA global
(Section 34.3.1 on page
(Section 34.5 on page
34

Device HA

579) to use active-passive
583) to use legacy mode device HA.
575