After the polling is complete, the monitoring system analyzes data received from the devices in order to determine the link presence between them.
Each device provides information about the neighbor device MAC address. The monitoring system checks the presence of a device with the obtained MAC address among the added devices and, if such a device is found, makes a conclusion that the link was established between these two devices. Thus, the devices lists of neighbors, connected by a link, will contain entries with each other's MAC addresses.
