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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.

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Wolfgang Köhler studied Computer Science at the Vienna University of Technology. Commencing writing Unix applications, he took responsibilities in the IT industry as IT project manager and IT manager. Today he is working in the IT Outsourcing business.

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