PRTG Manual: Inheritance of Settings
The hierarchically structured device tree organizes the devices in your network. This hierarchy is the basis for the inheritance of settings. Objects in the device tree can inherit their settings from a higher level. For example, you can change the scanning interval of all sensors by editing the interval setting of the topmost root group (if no other setting is defined below).
You can override this inheritance at any level of the hierarchy by setting a different value for a specific probe, group, device, or sensor. All objects below inherit these new settings. Object settings from higher levels do not inherit the new settings.
Settings that are inherited among all objects include:
- Scanning interval
- Notification triggers
- Authentication settings for several systems
- Compatibility settings (for certain types of sensors)
- Channel and unit configuration
- User access rights
- Paused status: If an object is paused by the user or by a schedule, all sensors on it are paused as well
There is one exception for devices and sensors: the IP address or DNS name of a device and compatibility settings are always inherited by sensors and cannot be changed at sensor level.
The screenshot below shows the Windows systems credentials settings inherited from the parent.
Click next to inherit from [parent object] to override the parent's settings and enter new settings for this object and all objects underneath in the hierarchy.
Click Save for your settings to take effect. If you click after you enter your settings, the object inherits the parent settings again and your settings do not take effect.
For all settings (except passwords), PRTG already includes a set of default values so you can start to work with the software immediately. For example, the following settings are inherited by all sensors from the root group:
- Default scanning interval of one minute
- SNMP v1 with community string set to public (default values for most devices)
- Dependency type Use parent
Before sensor setup, we recommend that you review the root group settings and set the default values to suit your setup. This should include the credentials for the types of systems in your network that you want to monitor (Windows, Linux, virtual servers, etc.).
For more information, see section Root Group Settings.
Inheritance of Notification Triggers
If you add notification triggers at probe, group, or device level, these are also inherited to all sensors underneath, unless you manually break the inheritance.
For more information, see section Sensor Notification Triggers Settings.