Usually, it is the task of the system administrator in the organization to make its network stable and reliable. His effective operation requires him to know all the information on network: number of hosts, where they are situated, quality of connections between them, their operation, and many other aspects. If he does not know every small detail of the company’s network, if he does not have the whole picture in front of his eyes when problems arise, he might fight the symptoms of the problems and not the problems themselves.