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Ethernet Goes Real-Time: a Survey on Research and Technological Developments
Ref: HURRAY-TR-0001       Publication Date: 1, Jan, 2000

Ethernet Goes Real-Time: a Survey on Research and Technological Developments

Ref: HURRAY-TR-0001       Publication Date: 1, Jan, 2000

Abstract:
Ethernet is the most popular LAN technology. Its low price and robustness, resulting from its wide acceptance and deployment, has created an eagerness to expand its responsibilities to the factory-floor, where real-time requirements are to be fulfilled. However, it is difficult to build a real-time control network using Ethernet, because its MAC protocol, the 1-persistent CSMA/CD protocol with the BEB collision resolution algorithm, has unpredictable delay characteristics. Many anticipate that the recent technological advances in Ethernet such as the emerging Fast/Gigabit Ethernet, micro-segmentation and full-duplex operation using switches will also enable it to support time-critical applications. This technical report provides a comprehensive look at the unpredictability inherent to Ethernet and at recent technological advances towards real-time operation.

Authors:
Mário Alves
,
Eduardo Tovar
,
Francisco Vasques




Record Date: 1, Jan, 2000