3G
435
SonicOS 5.8.1 Administrator Guide
Understanding 3G Failover
When the WAN Connection Model is set to Ethernet with 3G Failover, the WAN (Ethernet)
interface is the primary connection. If the WAN interface fails, the SonicWALL appliance fails
over to the 3G interface.
Note It is important to note that the WAN-to-3G failover process is different for the three different
3G Connection Profile dial types: Persistent, Dial on Data, and Manual Dial.
The following sections describe the three different methods of WAN-to-3G failover:
• “Persistent Connection 3G Failover” on page 436
• “Dial on Data 3G Failover” on page 437
• “Manual Dial 3G Failover” on page 438
Internet
Internet
DMZ
Ethernet WAN
(Primary)
WWAN
(Failover)
LAN
link/spd
pc card lanwanopt 1 2 3 4
5 6wlan
security
on/act
signal
link/act
activity
NSA 240