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SonicOS 5.8.1 Administrator Guide
Manual Dial 3G Failover
The following diagram depicts the sequence of events that occur when the WAN ethernet
connection fails and the 3G Connection Profile is configured for Manual Dial.
Caution It is not recommended to use a Manual Dial 3G Connection Profile when the WAN
Connection Model is set for Ethernet with 3G Failover. The Manual Dial 3G Connection
Profile is only intended to be used when the device's WAN Connection Model is set to 3G
Only in the Network > Interfaces page.
1. Primary Ethernet Connection Available - The Ethernet WAN is connected and used as
the primary connection. 3G is never connected while the Ethernet WAN connection is
available.
2. Primary Ethernet Connection Fails - The 3G connection is not established until the
administrator manually enables the connection.
3. 3G Connection Established – A 3G connection is established when the administrator
manually enables the connection on the SonicWALL appliance. The 3G 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 3G connection until the connection is manually disabled by the
administrator. After a manual disconnect, the available Ethernet connection will be used.
3G PC Card Support
To use the 3G interface you must have a 3G PC card and a contract with a wireless service
provider. Because both GSM and CDMA provide virtually the same performance, a 3G service
provider should be selected based primarily on the availability of supported hardware. SonicOS
Enhanced (3.6 and later versions) supports the 3G PC cards listed online at:
http://www.sonicwall.com/us/products/cardsupport.html
Administrator manually
connects WWAN using
SonicOS interface