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Scenario B: State Sync Pair in NAT/Route
Mode
For network installations with two Dell SonicWALL NSA E-Class
appliances configured as a stateful synchronized pair for
redundant high-availability networking.
In this scenario, one Dell SonicWALL NSA E8510 operates as
the primary gateway device and the other Dell SonicWALL NSA
E8510 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 connections if the primary device loses connectivity.
Note: Active/Active Deep Packet Inspection (A/A DPI)
functionality is also available for high-availability
deployments. For more information on the benefits and
setup instruction for Active/Active DPI, see the
"SonicOS Active/Active Feature Module" at:
www.sonicwall.com/us/support
To set up this scenario, follow the steps covered in:
•
Initial Setup
- page 31
•
Configuring L2 Bridge Mode
•
Additional Deployment Configuration
29
| Selecting a Deployment Scenario
- page 44
- page 46
Note: Follow the steps in the
before completing State Sync Pair setup.
B
SonicWALL NSA E-Class 2
SonicWALL
HA/Failover Pair
Network Security Appliance
SonicWALL NSA E-Class 1
10GE
Network Security Appliance
Local Network
Initial Setup
section, on page 31
10GE
E8510
HA Link
E8510
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