Many of the interface are showing no status - but for the same node i can see some polled status for other interfaces
Why are there status of the interface not getting polled?
by default NNMi do not poll the unconnected interfaces. You can check in the interface Inventory
select the interface, then Actions-->Configuration Details-->Monitoring Settings
You can set to poll unconnected interfaces a Monitoring Configuration, under "Interface Settings" or "Node Settings"
Why you're seeing the difference is the out of the box settings. By default only thos interfaces which can be determinted to connected to other inventory interfaces will automatically be managed. You can change this behavior by creating either an interface group or node group which contains this interface or node, then add monitoring settings to thqat group... you need to select the checkbox under Extend the scope of polling beyond connected interfaces and select "Poll Unconnected Interfaces" checkbox. Save and close, Save and close. It will take a few minutes (for whatever polling interval you defined) to update but you will see the status change from a tan ball to something else that reflects the current state of the interface(es).
You need to add monitoring settings for that interface group.
Configuration->Monitoring Configuration->Monitoring settings.
Interface Tab Add a group ordering number thats lower than the default groups and the make sure you check the poll unconnected interfaces check box. Save, Save, the demand configuration poll the node for the database commits to add your new monitoring settings to the polling for that node(s).
Its a bit more involved. All the monitoring rules are processed in numerical order : Interface settings 0-9999, Node settings 0-999, and finally general settings 0-9999. The first policy that matches an object (interface, component, etc) is the one thats applied. Only one monitoring policy can be applied to any object.