Distributed Systems for System Architects
Distributed Systems for System Architects
Avoiding the Babbling-Idiot Failure in a Time-Triggered Communication System
FTCS '98 Proceedings of the The Twenty-Eighth Annual International Symposium on Fault-Tolerant Computing
Jitter Compensation for Real-Time Control Systems
RTSS '01 Proceedings of the 22nd IEEE Real-Time Systems Symposium
Low-Latency Hard Real-Time Communication over Switched Ethernet
ECRTS '04 Proceedings of the 16th Euromicro Conference on Real-Time Systems
Event-Triggered and Time-Triggered Control Paradigms
Event-Triggered and Time-Triggered Control Paradigms
A time-triggered ethernet (TTE) switch
Proceedings of the conference on Design, automation and test in Europe: Proceedings
High Performance Switches and Routers
High Performance Switches and Routers
The All-New Switch Book: The Complete Guide to LAN Switching Technology
The All-New Switch Book: The Complete Guide to LAN Switching Technology
Interconnecting Smart Objects with IP: The Next Internet
Interconnecting Smart Objects with IP: The Next Internet
Time-Triggered Communication
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TTEthernet is a cross-industry communication standard that supports the integration of predictable time-triggered communication and event-triggered standard Ethernet traffic. This paper explores the ability of extending the firmware of Commercial-Off-The-Shelf (COTS) routers in order to support TTEthernet. Thereby, we can achieve a significant cost reduction, upgrade existing infrastructures and make field-failure rates of COTS devices available for certification. Based on a generic model of a COTS router, we introduce four methods for extending a COTS router with support for time-triggered and event-triggered message exchanges. The extended COTS router redirects time-triggered messages within pre-planed time intervals, while also processing event-triggered messages when no time-triggered message are scheduled. We achieve temporal predictability and low jitter by minimizing the effect of event-triggered messages onto the timing of time-triggered messages. Furthermore, experimental results from a prototype implementation provide insight into the performance differences between a COTS router and dedicated hardware.