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Page 18 Selecting a Deployment Scenario
Scenario B: State Sync Pair in NAT/Route Mode
For network installations with two SonicWALL NSA Series
appliances of the same model configured as a stateful
synchronized pair for redundant high-availability networking.
In this scenario, one SonicWALL NSA Series operates as the
primary gateway device and the other SonicWALL NSA Series
is in passive mode. All network connection information is
synchronized between the two devices so that the backup
appliance can seamlessly switch to active mode without
dropping any connections if the primary device loses
connectivity.
To set up this scenario, follow the steps covered in the Initial
Setup
and the Configuring a State Sync Pair in NAT/Route
Mode
sections. If you have completed setup procedures in
those sections, continue to the Additional Deployment
Configuration section, on page 37 to complete configuration.
SonicWALL NSA 1
SonicWALL NSA 2
B
Network Security Appliance
NSA
Local Network
SonicWALL
HA / Failover Pair
Internet
HA Link