Filter
Top Products
WWAN
374
SonicOS Enhanced 4.0 Administrator Guide
If a secondary Ethernet WAN (the OPT port) is configured, the TZ190 will first failover to
the secondary Ethernet WAN before failing over to the WWAN. In this situation, WWAN
failover will only occur when both the WAN and OPT paths are unavailable.
3. Reestablishing Primary Ethernet Connectivity After Failover – When the Ethernet
WAN connection (either the WAN port or the OPT port, if so configured) becomes available
again, all LAN-to-WAN traffic is automatically routed back to the available Ethernet WAN
connection. This includes active connections and VPN connections. The WWAN
connection is closed.
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.
Dial on Data 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 Dial on Data.
1. Primary Ethernet connection available – The Ethernet WAN interface is connected and
used as the primary connection. WWAN is never connected while the Ethernet WAN
interface is available (unless an explicit route has been configured which specifies WWAN
as the destination interface).
2. Primary Ethernet Connection Fails – The WWAN connection is not established until
qualifying outbound data attempts to pass through the SonicWALL TZ 190 appliance.
3. WWAN Connection Established – The WWAN connection is established when the device
or a network node attempts to transfer qualifying data to the Internet. The WWAN
connection stays enabled until the Maximum Connection Time (if configured) is reached.
4. Reestablishing WAN Ethernet Connectivity After Failover – When an Ethernet WAN
connection becomes available again, all LAN-to-WAN traffic is automatically routed back to
the available Ethernet WAN connection. The WWAN connection is closed.