Hardware Failover Page 139
Example: Assume that the Heartbeat Interval and the Failover Trigger Level are 5 seconds and 2
missed heartbeats respectively. Based on these values, the backup SonicWALL takes over from the
primary unit after 10 seconds in the event of a primary unit failure.
7.
Enter the Active SonicWALL Detection Time in seconds using a value between 0 and 300. The
default value of 0 is correct in most cases.When any SonicWALL (primary or backup) becomes active
after bootup, it looks for an active SonicWALL configured for Hardware Failover on the network. If
another SonicWALL is active, the SonicWALL that is booting up transitions to the Idle mode. In some
cases, there may be a delay in locating another SonicWALL due to network delays or problems with
hubs or switches.You can configure either the primary or backup SonicWALL to allow an increment
of time (in seconds) to look for another SonicWALL configured for Hardware Failover on the network.
You may enter a value between 0 and 300 seconds, but the default value of 0 seconds is sufficient in
most cases.
Tip!
The Synchronize Now button is used for diagnostics and troubleshooting purposes and is not required
for initial configuration.
SonicWALL Address Settings
Primary SonicWALL
•
Serial Number - The Primary SonicWALL serial number cannot be changed unless it is changed in
System >Administration.
•
X0 (LAN) IP Address - This is a unique IP address for accessing the primary SonicWALL from the
LAN whether it is Active or Idle.
Alert!
This IP address is different from the IP address used to contact the SonicWALL in the Network settings.
•
X1 (WAN) IP Address - This is a unique WAN IP address used to remotely manage the
primary SonicWALL whether it is Active or Idle.
8.
Configure the backup SonicWALL settings as follows:
•
Serial Number - Enter the serial number of the backup SonicWALL.
•
X0 (LAN) IP Address - The unique LAN IP address used to access and manage the backup Son-
icWALL whether it is Active or Idle.
Alert!
This IP address is different from the IP address used to contact the SonicWALL in the Network settings.
•
X1 (WAN) IP Address (Optional) - This is a unique WAN IP address used to remotely
manage the primary SonicWALL whether it is Active or Idle.
9.
Click Update. Once the SonicWALL has been updated, a message confirming the update is displayed
at the bottom of the browser window.
Alert!
It is important during initial configuration that the backup SonicWALL has not been previously
configured for use. If the backup SonicWALL has previous network settings, it is recommended to reset
the SonicWALL to the factory default settings. Additionally, the password must be changed back to the
same password as the Primary SonicWALL password.
10. Power on the backup SonicWALL used for Hardware Failover. After completing the diagnostic cycle,
the primary SonicWALL auto-detects the presence of the backup SonicWALL and synchronizes the
settings.
Summary of Contents for SonicOS Enhanced 2.2
Page 19: ...Page 6 SonicWALL SonicOS Standard Administrator s Guide...
Page 45: ...Page 32 SonicWALL SonicOS Standard Administrator s Guide...
Page 65: ...Page 52 SonicWALL SonicOS Standard Administrator s Guide...
Page 141: ...Page 128 SonicWALL SonicOS Standard Administrator s Guide...
Page 185: ...Page 172 SonicWALL SonicOS Standard Administrator s Guide...
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Page 189: ...Page 176 SonicWALL SonicOS Enhanced Administrator s Guide...
