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Dynamic Reconfiguration in HaRTES Switched Ethernet Networks

Ashjaei, M.A. ; Almeida, L. ; Behnam, MB ; Nolte, TN ; Du, Y.

Dynamic Reconfiguration in HaRTES Switched Ethernet Networks, Proc IEEE World Conf. on Factory Communication Systems - WFCS, Aveiro, Portugal, Vol. ., pp. . - ., May, 2016.

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The ability of reconfiguring a system during runtime is essential for dynamic real-time applications in which resource usage is traded online for quality of service. The HaRTES switch, which is a modified Ethernet switch, holds this ability for the network resource, and at the same time it provides hard real-time support for both periodic and sporadic traffic. Although the HaRTES switch technologically caters this ability, a protocol to actually perform the dynamic reconfiguration is missing in multi-hop HaRTES networks. In this paper we introduce such a protocol that is compatible with the traffic scheduling method used in the architecture. We prove the correctness of the protocol using a model checking technique. Moreover, we conduct a set of simulation experiments to show the performance of the protocol and we also show that the reconfiguration process is terminated within a bounded time.