ZyXEL Communications ZyWALL 310 - 48.1.1 Before You Begin; 48.1.2 Device HA and Device HA Pro

Chapter 48 Device HA
ZyWALL Series CLI Reference Guide
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48.1.1 Before You Begin
• Configure a static IP address for each interface that you will have device HA monitor.
Note: Subscribe to services on the backup Zyxel Device before synchronizing it with the
master Zyxel Device.
• Synchronization includes updates for services to which the master and backup Zyxel Devices are both
subscribed. For example, a backup subscribed to IDP/AppPatrol, but not anti-virus, gets IDP/
AppPatrol updates from the master, but not anti-virus updates. It is highly recommended to subscribe
the master and backup Zyxel Devices to the same services.
48.1.2 Device HA and Device HA Pro
Refer to the Introduction chapter of the ZyWALL USG Series User’s Guide for a list of device models that
support Device HA Pro.
The following table shows some differences between Device HA and Device HA Pro.
Table 238 Device HA Vs Device HA Pro
FEATURE DEVICE HA DEVICE HA PRO
Role Role of Master and Backup is
configurable. Master takes over
from Backup if the Master goes
down and then becomes the
Master again if it comes back
online again (failback).
Role of active and passive is not configurable. The active
model is the one whose heartbeat interface comes online
first. passive becomes active if active goes down and stays
active even if the previous active comes online again.
Firmware
Upgrade
Master remains Master by default
when new firmware is uploaded.
New firmware is first uploaded to the passive device and
then uploaded to the active device. By default, the passive
device reboots after firmware upload making it become
the active device. Clear the Reboot prompt in the Web
Configurator after uploading firmware to the passive
device if you want the passive device to remain passive
when new firmware is uploaded.
What is
synchronized
Configuration file Configuration file, device time, IPv4/v6 TCP sessions, IPSec
VPN tunnels, user login/logout information, AV/IDP
signatures, DHCP table, IP/MAC binding table.
Maximum
Failover Count
0 5 (default) to 50. Can be reset by command.
Best case
Failover delay
10~30 seconds to rebuild
connections.
0~1 seconds.
Monitored
Interfaces
Ethernet Ethernet, VLAN, Bridge, LAG
Dedicated
monitor port
No Heartbeat interface.
Note: Remove Ethernet, VLAN, Bridge, LAG
configurations from this port first.