Computer Networks
Switched Real-Time Ethernet and Earliest Deadline First Scheduling - Protocols and Traffic Handling
IPDPS '02 Proceedings of the 16th International Parallel and Distributed Processing Symposium
A Switched Ethernet Protocol for Hard Real-Time Embedded System Applications
AINA '05 Proceedings of the 19th International Conference on Advanced Information Networking and Applications - Volume 2
Response time evaluation in ethernet-based automation architectures
VECoS'08 Proceedings of the Second international conference on Verification and Evaluation of Computer and Communication Systems
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The paper presents a simulation scenario for performance evaluation of switched Ethernet as communication media in controller networks. Ethernet is the most accepted Local Area Network technology, characterized with low price and deployment robustness. Using Ethernet instead of custom industrial communication protocol can ease the development of applications. The introduction of Fast Ethernet and micro-segmentation eliminates some of the biggest problems of using Ethernet in controller networks. This also enables integration of controller networks with the enterprise and global networks. The use of queue management discipline shows a lot of possibilities for achieving requirements for different type of services. The evaluation is by means of simulation analysis, using network simulator -- NS2 as a tool. The results are used for studying the interactions in multi-tier model for distributed automation and for improving its communication performance. Some particular classes are proposed for prioritisation of different CNDEP traffic used in the multi-tier model.