Comprehensive and Detailed Explanation From BIG-IP Administration Control Plane Administration documents:
In a BIG-IP Device Service Cluster (DSC), manual configuration synchronization is performed using the ConfigSync framework. The supported and documented command to manually push the local configuration to a specific device group is:
tmsh run cm config-sync to-group <device_group>
This command:
Initiates a one-time manual ConfigSync
Pushes the local device's configuration to all members of the specified device group Is commonly used when auto-sync is disabled or when the administrator wants explicit control over synchronization timing Why the other options are incorrect:
A is not a valid TMSH command for ConfigSync.
B enables auto-sync but does not perform an immediate synchronization.
D is not a valid or supported TMSH command for device group configuration synchronization.
Therefore, the correct command to manually synchronize configuration to a device group is C.