Poll policy scope

The poll policy scope defines the devices or device interfaces to be polled.

A poll policy scope can be described as a series of filters. If, at any stage, a filter is not defined, then all devices pass through. The output of this set of filters can be either a set of devices, or, if the interface filter is defined, a set of devices interfaces. This is illustrated in the following figure.

 1  NCIM

Start with all devices defined for a single domain in the NCIM topology database.

 2  Network Views

If there are any network views associated with the poll policy, then the policy scope is restricted to the devices contained by those views. If no network views are associated to the poll policy, then all devices pass through this stage. This second situation is equivalent to selecting the All Devices option in the Network Views tab of the Poll Policy Editor and the Poll Policy Wizard.

 3  Device Filter

If there is a device filter defined for the poll policy, then the policy scope is further restricted to the set of devices matching the filter. If no device filter is defined then all devices that passed the Network Views filter pass through this stage. At this point, there is a set of devices available that are in scope for this poll policy. For each poll definition assigned to the policy there can be a different set of network entities in scope based on further filtering.

 4  Device Class

For each poll definition assigned to the policy, the device class restricts the devices in scope based on the class selection. If no device classes are selected then no filtering occurs.

 5  Interface Filter

If an interface filter is defined, and assuming that this interface filter is valid for the poll in question, then this interface filter is applied to all interfaces contained by the devices that have passed the filters above. The output is a set of in-scope interfaces. If no interface filter is defined then the output is the set of devices that passed the Device Class filter.