User`s guide

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secondary box must also connect port 3 with ISP 1. If you install cabling incorrectly, HA failover does not work properly. For an example of correct
cabling, see the following diagram:
In this article:
Enable High Availability
Configure Monitoring
Verify the HA Status
Manually Execute an HA Failover
Enable High Availability
Before you set up two Barracuda Firewalls in an HA cluster, ensure that both units fulfill the following prerequisites:
Both Barracuda Firewalls must be the same model type and revision. They must also run the same firmware version.
The management IP addresses of both units must be in the same network and subnet.
System clocks and timezones must be accurately set on both units. If they are not, HA pairing can fail.
To enable the HA cluster:
Log into the secondary unit.
Go to the page.ADVANCED > High Availability
In the section, click .Setup Enable High Availability
In the window, enter the management IP address, serial number, and administrator password for the primaryEnable High Availability
unit.
Click . The HA pairing process can take several minutes. During this process, do not reload the configuration page or configure Enable
any other settings.
After the HA pairing is successful, the option appears in place of the option. The IPDisable High Availability Enable High Availability
addresses and serial numbers of both HA units are also displayed.
Additionally, this warning message is displayed on every configuration page of the secondary unit:
While the secondary unit is part of the HA cluster, you can only configure the following settings: