High Availability Status; High Availability Status Window - SonicWALL TELE3 SP Administrator's Manual

Note: If you change the IP address of either SonicWALL, synchronization cannot occur
between the two SonicWALLs without updating the changes manually in the High Availability
configuration.
Synchronizing Changes between the Primary and Backup SonicWALLs
Changes made to the Primary or Backup firewall are synchronized automatically between the
two firewalls. If you click Synchronize Now, the Backup SonicWall restarts and becomes
temporarily unavailable for use as a backup firewall.

High Availability Status

If failure of the primary SonicWALL occurs, the backup SonicWALL assumes the primary
SonicWALL LAN and WAN IP Addresses. There are three primary methods to check the status
of the High Availability pair: the High Availability Status window, E-mail Alerts and View
Log. These methods are described in the following sections.

High Availability Status Window

One method to determine which SonicWALL is active is to check the High Availability Status
page for the High Availability pair. To view the High Availability Status window, you can
log into the primary or backup SonicWALL LAN IP Address. Click High Availability on the left
side of the browser window and then click Configure at the top of the window. If the primary
SonicWALL is active, the first line in the status window above indicates that the primary
SonicWALL is currently Active
Page 166 SonicWALL TELE3 SP Administrator's Guide