Initial High Availability Setup

Before you begin the configuration of High Availability on the Primary SonicWall security appliance, perform the following initial setup procedures.

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Register and associate the Primary and Secondary SonicWall security appliances as a High Availability pair on MySonicWall. See Licensing High Availability Features.
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On the back of the Secondary SonicWall security appliance, locate the serial number and write the number down. You need to enter this number in the High Availability > Settings page.
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Make sure that the two appliances are running the same SonicOS Enhanced versions.
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Make sure Primary SonicWall and Secondary SonicWall security appliance’s LAN, WAN, and other interfaces are properly configured for seamless failover.
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Connect the Primary SonicWall and Secondary SonicWall appliances with a CAT5 or CAT6-rated crossover cable. The Primary and Secondary SonicWall security appliances must have a dedicated connection between each other for High Availability. SonicWall recommends cross-connecting the two together using a CAT5/6 crossover Ethernet cable, but a connection using a dedicated 100Mbps hub/switch is also acceptable.

High Availability Interfaces by Platform shows which interface to use for the various SonicWall security appliance platforms.

 

High Availability Interfaces by Platform

Platform

Interface for High Availability

NSA E5500, E6500, E7500, E8500, E8510

HA port

NSA 2400, 3500, 4500, 5000

X5

NSA 2400MX

X25

NSA 250M, 250M Wireless

X4

NSA 240

X8

NSA 220, 220 Wireless

X6

SOHO

X4

TZ 210, TZ 210 Wireless-N

X6

TZ 205, 205W

X4

TZ 200, TZ 200 Wireless-N

X4

TZ 105, 105 Wireless

X4

TZ 100, 100W

Not supported
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Power on the Primary appliance, and then power on the Secondary appliance.
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Do not make any configuration to the Primary’s High Availability interface; the High Availability programming in an upcoming step takes care of this issue. See Configuring Active/Standby High Availability Settings or Configuring Active/Active DPI High Availability Settings. When done, disconnect the workstation.