User manual

Chapter 39 Device HA
ZyWALL USG 300 User’s Guide
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39.2 Device HA General
The Configuration > Device HA General screen lets you enable or disable
device HA, and displays which device HA mode the ZyWALL is set to use along
with a summary of the monitored interfaces.
Figure 474 Configuration > Device HA > General
The following table describes the labels in this screen.
Table 186 Configuration > Device HA > General
LABEL DESCRIPTION
Enable Device
HA
Turn the ZyWALL’s device HA feature on or off.
Note: It is not recommended to use STP (Spanning Tree Protocol)
with device HA.
Device HA
Mode
This displays whether the ZyWALL is currently set to use active-passive
mode device HA or legacy mode device HA. Active-passive mode is
recommended for general device failover deployments. Only use legacy
mode if you need a more complex relationship between the master and
backup ZyWALLs, such as active-active or using different ZyWALLs as
the master for individual interfaces.
The master and its backups must all use the same device HA mode.
Click the link to go to the screen where you can configure the ZyWALL to
use the device HA mode that it is not currently using.
Monitored
Interface
Summary
This table shows the status of the interfaces that you selected for
monitoring in the other device HA screens.
# This is the entry’s index number in the list.
Interface These are the names of the interfaces that are monitored by device HA.
Virtual Router
IP / Netmask
This is the interface’s IP address and subnet mask. Whichever ZyWALL is
the master uses this virtual router IP address and subnet mask.
Management
IP / Netmask
This field displays the interface’s management IP address and subnet
mask. You can use this IP address and subnet mask to access the
ZyWALL whether it is in master or backup mode.
Link Status This tells whether the monitored interface’s connection is down or up.