WebNM is a monitoring system that continuously watches the overall health of the network. It uses a variety of protocols and applications to provide valuable information. The main status screen provides, at a glance, the network status at any given moment. WebNM also provides a ‘drill down’ capability that allows a user to view historical information such as utilization and errors via performance graphs. There is also a much expanded “maintenance interface” that is used by NSD. It provides a much greater level of details and access.