Chapter 48 Device HA
ZyWALL Series CLI Reference Guide
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48.2 General Device HA Commands
This table lists the general commands for device HA.
48.3 Active-Passive Mode Device HA
Virtual Router
The master and backup Zyxel Device form a single ‘virtual router’.
Cluster ID
You can have multiple Zyxel Device virtual routers on your network. Use a different cluster ID to identify
each virtual router.
Monitored Interfaces in Active-Passive Mode Device HA
You can select which interfaces device HA monitors. If a monitored interface on the Zyxel Device loses
its connection, device HA has the backup Zyxel Device take over.
Enable monitoring for the same interfaces on the master and backup Zyxel Devices. Each monitored
interface must have a static IP address and be connected to the same subnet as the corresponding
interface on the backup or master Zyxel Device.
Virtual Router and Management IP Addresses
• If a backup takes over for the master, it uses the master’s IP addresses. These IP addresses are know as
the virtual router IP addresses.
• Each interface can also have a management IP address. You can connect to this IP address to
manage the Zyxel Device regardless of whether it is the master or the backup.
Table 239 device-ha General Commands
COMMAND DESCRIPTION
show device-ha status
Displays whether or not device HA is activated, the configured device HA
mode, and the status of the monitored interfaces.
[no] device-ha activate
Turns device HA on or off.
device-ha mode active-passive
Sets the Zyxel Device to use active-passive device HA.
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