Device Ha; Overview; What You Can Do In This Chapter; What You Need To Know - ZyXEL Communications USG40 User Manual

31.1 Overview

Device HA lets a backup ZyWALL/USG (B) automatically take over if the master ZyWALL/USG (A)
fails.
Figure 331 Device HA Backup Taking Over for the Master

31.1.1 What You Can Do in this Chapter

• Use the General screen
see the status of each interface monitored by device HA.
• Use the Active-Passive Mode screens
device HA. You can configure general active-passive mode device HA settings, view and manage
the list of monitored interfaces, and synchronize backup ZyWALL/USGs.

31.1.2 What You Need to Know

Active-Passive Mode
• Active-passive mode lets a backup ZyWALL/USG take over if the master ZyWALL/USG fails.
• The ZyWALL/USGs must be set to use the same device HA mode (active-passive).
Management Access
You can configure a separate management IP address for each interface. You can use it to access
the ZyWALL/USG for management whether the ZyWALL/USG is the master or a backup. The
management IP address should be in the same subnet as the interface IP address.
C
HAPTER
A
B
(Section 31.2 on page 504) to configure device HA global settings, and
(Section 31.3 on page
ZyWALL/USG Series User's Guide
503
3 1

Device HA

505) to use active-passive mode