In OpManager, the availability monitoring of dependent devices will be paused if the core or parent device is down. Enabling uplink dependency will allow you to mute the continuous alarms or alerts generated by the child (dependent) device when the parent is down.
For example, if 100 devices are connected to a parent, OpManager will raise alerts for all 100 devices when the parent is down. Enabling uplink dependency will allow you to mute repeated alerts. OpManager will raise a single alarm informing the user that the parent is down and the child devices are marked as 'Dependent Unavailable'.
You can configure the uplink dependency for a device from
The uplink dependency details of a device can be viewed from its respective device summary page. Also, you can view the complete uplink dependency hierarchy from any one of the following options.
OpManager has a dedicated report for uplink dependency under Reports -> Inventory.
If the device addition was through Layer 2 discovery, you can view the uplink dependency hierarchy and the complete layout of the layer2 map under Maps -> Layer2 Maps.