This thesis presents the reasons why the evaluation of communication networks on the basis of measuring the parameters of network devices is fundamental for ensuring a stable and reliable communication network. The reliability of a network is one of its most important qualities, for which we have to ensure a certain performance level, depending on customer requirements.
Good practice of monitoring a communication network dictates the need for a measuring system, which is fit for executing measurements on several different platforms and types of devices. For the purpose of gathering real-time parameter values in sample communication networks, we used a software tool called WhatsUp Gold. This program, with the assistance of the SNMP protocol, which executes queries regarding objects in the management information database of network devices, stores data values, which are then aggregated into reports. Measured parameters were chosen based on goals we want to achieve with these measurements. For measurements acquired in a one month time interval, weekly and daily trends are presented, from which we evaluate the level of performance.