One of the assigments of Network Manager is discovered devices belong to managed networks, built topology maps of monitored networks and made visualization of discovered device states.

The product can gather information about networks from their nodes through SNMP protocol, and next it visualises the collected data through a graphic application which is a user friendly interface to the monitored network database.

An important assigment of the product is gathered current work parameters of network devices using SNMP protocal. The gathered data a user can see in the form of graphs by the Web browser. The collected data also are sent to Operation Manager.

Network Manager, on the base of its configuration files, can generate applications that are graphic interfaces that monitor work of devices on which SNMP agents work. Such interfaces usually show that parameters of devices, which are important in a given situation. Many interfaces to a particular device may exist at the same time (stored in separate files). The panels can be created and modified very easily by end-users. Main edition technique used to panels creation is, like in a different kind of graphic editors, using a mouse as main designed tool.

Network Manager is also responsible for management of user accounts. These users are quite independent of operating system users, on which operating system works. Each user has an username as its identifier, number (UID), privilege level (ULEVEL - zero means the highest level), password and description of the account (GECOS). Each user can belong to free number of user groups.

Network Manager is also responsible for management of user groups. Each group has an username. The groups allows to manage access rights to elements of David system in effective way.