KNX/EIB is a popular standard in building automation. EIBsec is an
extension to this standard and supports secure communication. Its
concepts are required to implement KNX/EIB in security critical
applications like access control and security alarm systems. The
performance of KNX/EIB and its extension EIBsec will be analysed by
building a simulation. Frameworks for such a simulation will be compared
to each other. Furthermore, the simulation framework OMNeT++, which
allows the building of a KNX/EIB based network, will be presented in
detail. The modelling of the object structure takes special care of the
extensibility of the KNX/EIB network. In particular, the implementation
analyses the change in network behaviour when an existing KNX/EIB
installation is extended with EIBsec.