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SonicOS Enhanced 4.0 Administrator Guide
Caution It is not recommended to configure a policy-based route that uses the WWAN connection
when the WAN Connection Model is set for Ethernet with WWAN Failover. If a policy-
based route is configured to use the WWAN connection, the connection will remain up until
the Maximum Connection Time (if configured) is reached.
Manual Dial WWAN Failover
The following diagram depicts the sequence of events that occur when the WAN ethernet
connection fails and the WWAN Connection Profile is configured for Manual Dial.
Caution It is not recommended to use a Manual Dial WWAN Connection Profile when the WAN
Connection Model is set for Ethernet with WWAN Failover. The Manual Dial WWAN
Connection Profile is only intended to be used when the device's WAN Connection Model is
set to WWAN Only in the Network > Interfaces page.
1. Primary Ethernet Connection Available - The Ethernet WAN is connected and used as
the primary connection. WWAN is never connected while the Ethernet WAN connection is
available.
2. Primary Ethernet Connection Fails - The WWAN connection is not established until the
administrator manually enables the connection.
3. WWAN Connection Established – A WWAN connection is established when the
administrator manually enables the connection on the SonicWALL TZ 190. The WWAN
connection stays enabled until the administrator manually disables the connection.
4. Reestablishing WAN Ethernet Connectivity After Failover – Regardless of whether the
an Ethernet connection becomes available again, all LAN-to-WAN traffic will still use the
manually enabled WWAN connection until the connection is manually disabled by the
administrator. After a manual disconnect, the available Ethernet connection will be used.