Wan Failover And Load Balancing Settings - SonicWALL SonicOS Enhanced 2.2 Administrator's Manual

The SonicWALL can monitor WAN traffic using Physical Monitoring which detects if the link is unplugged
or disconnected, or Physical and Logical Monitoring, which monitors traffic at a higher level, such as
upstream connectivity interruptions.
Alert!
Before you begin, be sure you have configured a user-defined interface to mirror the WAN port settings.

WAN Failover and Load Balancing Settings

To configure the SonicWALL for load balancing, follow the steps below:
1. Select Enable Load Balancing.
2. From the Secondary WAN Interface menu, select your secondary WAN interface.
3. Enter a number between 5 and 300, in the Check Interface Every _ Seconds field. The default value
is 5 seconds.
4. In the Deactivate Interface after _ missed intervals, enter a number between 1 and 10. The default
value is 3. If the default value is used, then the interface is considered inactive after 3 successive
attempts at 5 seconds each.
5. Enter a number between 1 and 10 in the Reactivate Interface after _ successful intervals. If the
default value is used, then the interface is considered active after 3 successive attempts at 5 seconds
each.
Configuring WAN Probe Monitoring
The SonicWALL can monitor WAN traffic using Physical Monitoring which detects if the link is unplugged
or disconnected, or Physical and Logical Monitoring, which monitors traffic at a higher level, such as
upstream connectivity interruptions. Selecting Enable Probe Monitoring, then clicking Configure
displays the Configure WAN Probe Monitoring window for configuring the SonicWALL to monitor WAN
connectivity.
Alert!
Before you begin, be sure you have configured a user-defined interface to mirror the WAN port settings.
Page 60 SonicWALL SonicOS Standard Administrator's Guide