2.2.6 Source of Time Service Configuration Setting

The configuration setting source values indicate the source from which a configuration setting's value was loaded. These fields are not used to instruct an NTP Authentication Extensions implementation how to load its configuration, but rather to identify how the value of a related field was populated. Fields that utilize these values have no effect on client behavior and are provided as a diagnostic aid.

The following table lists the configuration-setting sources that are available.

Value	Meaning
W32TIME_CONFIGURATION_SETTING_UNDEFINED 0x00000000	The configuration setting is not defined.
W32TIME_CONFIGURATION_SETTING_DEFAULT 0x00000001	The configuration setting is using the value set during initialization.
W32TIME_CONFIGURATION_SETTING_LOCAL 0x00000002	The configuration setting is using the value defined in the local configuration.
W32TIME_CONFIGURATION_SETTING_POLICY 0x00000003	The configuration setting is using the value defined in the remote configuration, such as through Group Policy.
W32TIME_CONFIGURATION_SETTING_RESERVED 0x00000004	The configuration setting is reserved for future use.

All other values are reserved for future use.

As an example, a client can invoke the W32TimeQueryConfiguration method defined in section 3.2.5.6 to retrieve the configuration of an NTP Authentication Extensions implementation. In the W32TIME_CONFIGURATION_ADVANCED structure returned to the caller, the ulLargePhaseOffset field contains the value of the LargePhaseOffset ADM element (see [MS-SNTP] section 3.1.1), and the ulLargePhaseOffsetFlag field will contain a value from the preceding table that indicated the source from which the value of the LargePhaseOffset ADM element was most recently loaded.