To manually add a SonicWall appliance using the SonicWall GMS UI, follow the below steps.
The SonicWall GMS will then attempt to create a management VPN tunnel, set up an HTTPS connection, or use the existing site-to-site VPN tunnel to access the appliance. GMS then reads the appliance configuration and acquires the SonicWall appliance for management. This will take a few minutes.
After the SonicWall appliance is successfully acquired, its icon turns green, its configuration settings are displayed at the unit level, and its settings are saved to the database.
Note: In a multi-tier distributed environment, both the primary and secondary SonicWall GMS Agents must be configured to use the same management method.