FortiGate Next Generation Firewall utilizes purpose-built security processors and threat intelligence security services from FortiGuard labs to deliver top-rated protection and high performance, including encrypted traffic.
This article describes how to initate unregister request from FortiGate to FortiManager.
Scope
FortiGate, FortiManager.
Solution
In the situation that it is required to unregister an FortiGate from FortiManager’s device list, other than deleting it from the FortiManager’s device list, CLI command in FortiGate below may also be used.
This may arise when the FortiManager has been replaced and 'exe fgfm reclaim-dev-tunnel' applied in FortiManager, but it still fails to trigger the FortiGate to point to the new FortiManager’s serial number.
# execute central-mgmt unregister-device <old FortiManager serial number>
