The BACnet Masquerade Router (BMR) application is a BACnet router between one or more BACnet/IPv4 networks and Virtual Local Area Networks (VLAN) of virtual BACnet devices (VDB). The virtual devices masquerade as a "digital twin" of real devices, masking some objects and properties and making others available.
The principle use of this application is to help collect together into one unified BACnet network a collection of other BACnet intranetworks that have overlappng BACnet device identifiers and network numbers and therefore cannot be directly connected.
In some cases these other networks, referred to in this project as "sites", have developed independantly of each other with no cooperative administration, or they are "clones" of each other where their was no guidence on making non-overlapping device identifiers and network numbers.
The applications in this project are based on BACpypes, a Python library for the BACnet protocol, and BACpypes-MQTT, an experimental protocol extension for using MQTT publish/subscribe to emulate a LAN.
For more information see the wiki.
Back in the earliest days of the BACnet Interest Group - North America, which is now called BACnet International, there was a project called the Open BACnet Interoperable Wide Area Network (OBIWAN) with Dave Thompson, then with the The Penn State Facilities Engineering Institute. The basic idea was simple, allow the BACnet networks in Higher Ed institutions like Cornell University, Penn State, Ohio State, and Princeton, to join together into one network that can share real-time data, applications, and insights.
This project is one small component of that overall vision.