Device Ha Pro - ZyXEL Communications ZyWall ATP series User Manual

Table 294 Configuration > Device HA > Device HA Status (continued)
LABEL
Service Status
Apply
Reset

35.3 Device HA Pro

You need a license to use Device HA Pro. Device HA Pro is easier to deploy than Device HA, is more
reliable (no risk of overloading), and faster (Device HA causes a connection break of 10~30 seconds
while Device HA Pro just has 1~2 seconds). In addition to configuration file backup in Device HA, device
time, TCP sessions (IPv4/IPv6), IPSec VPN sessions, login/logout information, DHCP table, IP/MAC binding
table and license status can also be backed up using Device HA Pro.
Active and Passive Devices
Device HA Pro uses a dedicated heartbeat link between an active device ('master') and a passive
device ('backup') for status syncing and backup to the passive device. On the passive device, all ports
are disabled except for the port with the heartbeat link.
In the following example, Zyxel Device A is the active device that is connected to passive device Zyxel
Device B via a dedicated link that is used for heartbeat control, configuration synchronization and
troubleshooting. All links on Zyxel Device B are down except for the dedicated heartbeat link.
Note: The dedicated heartbeat link port must be the highest-numbered port on each
Device
Figure 447 Device HA Pro
Failover from the active Zyxel Device to the passive Zyxel Device is activated when:
• A monitored interface is down
• A monitored service (daemon) is down
• The heartbeat link exceeds the failure tolerance.
Chapter 35 Device HA
DESCRIPTION
This field displays whether a service license is enabled at myZyxel (Activated) or not
(Not Activated) or expired (Expired). It displays the remaining Grace Period if your
license has Expired. It displays Not Licensed if there isn't a license to be activated for
this service.
If you need a license or a trial license has expired, click Buy to buy a new one. If a
Standard license has expired, click Renew to extend the license.
Then, click Activate to connect with the myZyxel server to activate the new license.
Click Apply to save your changes back to the Zyxel Device.
Click Reset to return the screen to its last-saved settings.
for Device HA Pro to work.
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