The point was that any Smartset whose membership is
dynamic is useless on a r/o map, since it takes a r/w
map to see things move into and out of it. Smartsets
whose membership does not change are ok, as their
status is updated for both r/o and r/w.

I always define two Smartsets:
ProblemNodes: (IP Status is Critical  or IP Status is Marginal) and isNode
is True
ProblemInterfaces: (IP Status is Critical and isInterface is True)
These are very useful, but not on a r/o map.

Cordially,

Leslie A. Clark
IBM Global Services - Systems Mgmt & Networking