A network management device which registers for any state change
notifications from the devices in the network. The network management
device updates its status and values of the devices associated with each
state change notification by querying the device. In this manner the
management device can make a more timely update for a particular device
and need not keep querying devices that have not changed, thus
eliminating many unnecessary transactions. In certain embodiments polling
is still performed. As a result, the management device is both more
current in its displayed data and has fewer network transactions.