Scenario B: State Sync Pair In Nat/Route Mode - SonicWALL NSA Series Getting Started Manual

NSA_5000_4500_3500_GSG.book Page 18 Wednesday, January 19, 2011 6:21 PM

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.
Note:
Active/Active pair functionality is also available for
high-availability deployments. For more information on
the benefits and setup instruction for Active/Active pair,
see the "SonicOS Active/Active Feature Module" at
http://www.sonicwall.com/us/support.html
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To set up this scenario, follow the steps covered in the
Setup Configuring a State Sync Pair in NAT/
and the
Route Mode
sections. If you have completed setup
procedures in those sections, continue to the
section, on page 37
Deployment Configuration
configuration.
Page 18 Selecting a Deployment Scenario
B
HA / Failover Pair
>
Initial
Additional
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Network Security Appliance
Network Security Appliance
HA Link
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