
Chapter 24 Device HA
ZyWALL (ZLD) CLI Reference Guide
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24.4.2 Active-Passive Mode Device HA Command Example
This example configures a ZyWALL to be a master ZyWALL for active-passive mode device
HA. There is a management IP address of 192.168.1.3 on lan1. wan1 and lan1 are monitored.
The synchronization password is set to “mySyncPassword”.
24.5 Legacy Mode (VRRP) Device HA
This section covers device HA using VRRP, VRRP groups, and synchronization.
Virtual Router Redundancy Protocol (VRRP) Overview
Every computer on a network may send packets to a default gateway, which can become a
single point of failure. Virtual Router Redundancy Protocol (VRRP), allows you to create
redundant backup gateways to ensure that the default gateway is always available. The
ZyWALL uses a custom VRRP implementation and is not compatible with standard VRRP.
device-ha ap-mode backup sync now Synchronize now.
show device-ha ap-mode interfaces Displays the device HA AP mode interface settings
and status.
show device-ha ap-mode status Displays the ZyWALL’s key device HA settings.
show device-ha ap-mode master sync Displays the master ZyWALL’s synchronization
settings.
show device-ha ap-mode backup sync Displays the backup ZyWALL’s synchronization
settings.
show device-ha ap-mode backup sync status Displays the backup ZyWALL’s current
synchronization status.
show device-ha ap-mode backup sync summary Displays the backup ZyWALL’s synchronization
settings.
show device-ha ap-mode forwarding-port
interface_name
If you apply Device HA on a bridge interface on a
backup ZyWALL, you can use this command to see
which port in the bridge interface is chosen to
receive VRRP packets used to monitor if the
master ZyWALL goes down.
interface_name: This is a bridge interface, For
example, brx.
Table 123 device-ha ap-mode Commands (continued)
COMMAND DESCRIPTION
Router(config)# device-ha ap-mode lan1 manage-ip 192.168.1.3 255.255.255.0
Router(config)# device-ha ap-mode role master
Router(config)# device-ha ap-mode master sync authentication password
mySyncPassword
Router(config)# device-ha ap-mode wan1 activate
Router(config)# device-ha ap-mode lan1 activate
Router(config)# device-ha activate
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