You can configure sticky connections, failback, and notification of multi-WAN events. Not all configuration options are available for all multi-WAN configuration options. If a setting does not apply to the multi-WAN configuration option you selected, those fields are not active.
To configure multi-WAN settings:
A sticky connection is a connection that continues to use the same WAN interface for a defined period of time. You can set sticky connection parameters if you use the Routing Table, Round-robin, or Interface Overflow options for multi-WAN. Stickiness makes sure that, if a packet goes out through an external interface, any future packets between the source and destination IP address pair use the same external interface for a specified period of time. By default, sticky connections use the same interface for 3 minutes.
If a policy definition contains a sticky connection setting, the policy setting is used instead of the global setting.
To change the global sticky connection duration for a protocol or set of protocols:
If you set a sticky connection duration in a policy, you can override the global sticky connection duration. For more information, see Set the Sticky Connection Duration for a Policy.
You can set the action you want your XTM device to take when a failover event has occurred and the primary external interface becomes active again. When this occurs, all new connections immediately fail back to the primary external interface. You select the method you want to use for connections in process at the time of failback.
In the Failback for Active Connections drop-down list:
This failback setting also applies to any policy-based routing configuration you set to use failover external interfaces.
Log messages are always created for multi-WAN failover events.
To configure notification settings for multi-WAN failover and failback events:
For more information about notification settings, see Set Logging and Notification Preferences.