NDLI: Improving the performance of real-time communication services on high-speed LANs under topology changes

Content Provider	IEEE Xplore Digital Library
Author	Fernandez, J. Garcia, J.M. Duato, J.
Copyright Year	2002
Description	Author affiliation: Dpto. Ingenieria y Tecnologia de Computadores, Murcia Univ., Spain (Fernandez, J.; Garcia, J.M.)
Abstract	In this paper, we propose and evaluate a new protocol that provides topology change- and fault-tolerant real-time communication services on NOW and clusters. This protocol overcomes the main drawback of our previously proposed protocol, called Dynamically Re-established Real-Time Channels (DRRTC), which is physically limited by the number of virtual channels per port. The new protocol allows different real-time channels to share the same virtual channel. In this way, the new protocol allows us to establish a greater number of real-time channels than the previous one. Moreover, its only limitation is the bandwidth devoted to real-time traffic. However, this introduces two new problems that are successfully managed by the new protocol: the existence of cyclic dependencies among different real-time channels and the increased complexity of deadline requirements. We present and analyze the performance evaluation results when a single switch or a single link is deactivated/activated for different topologies and workloads. The new protocol overwhelms the DRRTC protocol while guaranteeing deadline requirements and channel recovery.
Sponsorship	IEEE Comput. Soc. Tech. Committee on Comput. Commun
Starting Page	385
Ending Page	394
File Size	371757
Page Count	10
File Format	PDF
ISBN	0769515916
ISSN	07421303
DOI	10.1109/LCN.2002.1181810
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-11-06
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Local area networks Protocols Network topology Switches Bandwidth Communication switching Fault tolerance Workstations Routing Performance analysis
Content Type	Text
Resource Type	Article

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