A Reconfigurable Ethernet Switch for Self-Optimizing Communication Systems

Griese B, Porrmann M. A Reconfigurable Ethernet Switch for Self-Optimizing Communication Systems. In: Proceedings of the IFIP Conference on Biologically Inspired Cooperative Computing (BICC 2006). Springer US; 2006: 115-125.Self-optimization is a promising approach to cope with the increasing complexity of today’s automation networks. The high complexity is mainly caused by a rising amount of network nodes and increasing real-time requirements. Dynamic hardware reconfiguration is a key technology for self-optimizing systems, enabling, e.g., Real-Time Communication Systems (RCOS) that adapt to varying requirements at runtime. Concerning dynamic reconfiguration of an RCOS, an important requirement is to maintain connections and to support time-constrained communication during reconfiguration. We have developed a dynamically reconfigurable Ethernet switch, which is the main building block of a prototypic implementation of an RCOS network node. Three methods for reconfiguring the Ethernet switch without packet loss are presented. A prototypical implementation of one method is described and analyzed in respect to performance and resource efficiency