Continuous BACnet/IP LAN monitoring

BACmon is a tool for monitoring BACnet/IP networks to be alerted to configuration and performance problems. It passively receives messages that are broadcast on the local network, decodes them, checks for certian kinds of traffic patterns and keeps counters for monitoring volume.

The daemon listens for BACnet/IP traffic, classifies it, and can send alerts for some types of behavior. The web interface displays summary charts for the information it finds, grouped by the layers of the BACnet/IP stack. The daemon is based on the BACpypes library.

Source : https://sourceforge.net/projects/bacmon/

The image above shows an increase in BACnet traffic, occuring at regular intervals.