3G/4G Failover: Manual Dial Configuration depicts the sequence of events that occur when the WAN Ethernet connection fails and the 3G/4G Connection Profile is configured for Manual Dial.
3G/4G Failover: Manual Dial Configuration
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1
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Primary Ethernet Connection Available - The Ethernet WAN is connected and used as the primary connection. 3G/4G is never connected while the Ethernet WAN connection is available.
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2
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Primary Ethernet Connection Fails - The U0/U1/M0 interface connection is not established until the administrator manually enables the connection.
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3
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3G/4G Connection Established – A U0/U1/M0 interface connection is established when the administrator manually enables the connection on the SonicWall appliance. The U0/U1/M0 interface stays connected until the administrator manually disables the connection.
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4
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Reestablishing WAN Ethernet Connectivity After Failover – Regardless of whether an Ethernet connection becomes available again, all LAN-to-WAN traffic will still use the manually enabled 3G/4G connection until the connection is manually disabled by the administrator. After a manual disconnect, the available Ethernet connection will be used.
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