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SONICWALL SONICOS ENHANCED 2.5 ADMINISTRATOR’S GUIDE
C
HAPTER
37:
Setting Up Hardware Failover
during configuration. If preempt mode is enabled, the primary SonicWALL becomes the active
firewall and the backup firewall returns to Idle status.
• E-mail Alerts Indicating Status Change - If you have configured the primary SonicWALL to send
E-mail alerts, you receive alert e-mails when there is a change in the status of the Hardware
Failover pair. For example, when the backup SonicWALL takes over for the primary after a failure,
an e-mail alert is sent indicating that the backup has transitioned from Idle to Active. If the primary
SonicWALL subsequently resumes operation after that failure, and Preempt Mode has been
enabled, the primary SonicWALL takes over and another e-mail alert is sent to the administrator
indicating that the primary has preempted the backup.
• View Log - The SonicWALL also maintains an event log that displays the Hardware Failover
events in addition to other status messages and possible security threats. This log may be viewed
with a browser using the SonicWALL Management Interface or it may be automatically sent to the
administrator’s E-mail address. To view the SonicWALL log, click Log on the left side of the
management interface.