The output of a switch,or, effective bandwidths for networks |
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Authors: | Wischik Damon J |
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Institution: | (1) Statistical Laboratory, University of Cambridge, Mill Lane, Cambridge, CB2 1SB, UK |
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Abstract: | Consider a switch which queues traffic from many independent input flows. We show that in the large deviations limiting regime
in which the number of inputs increases and the service rate and buffer size are increased in proportion, the statistical
characteristics of a flow are essentially unchanged by passage through the switch. This significantly simplifies the analysis
of networks of switches. It means that each traffic flow in a network can be assigned an effective bandwidth, independent
of the other flows, and the behaviour of any switch in the network depends only on the effective bandwidths of the flows using
it.
This revised version was published online in June 2006 with corrections to the Cover Date. |
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Keywords: | effective bandwidths feedforward networks large deviations decoupling bandwidths output of a switch many sources |
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