When is a Work-Conserving Switch Not ?

  title={When is a Work-Conserving Switch Not ?},
  author={Jonathan S. Turner and jon. turner},
Crossbar-based switches are commonly used to implement routers with throughputs up to about 1 Tb/s. The advent of work-conserving crossbar scheduling algorithms now makes it possible to engineer systems that perform well, even under extreme traffic conditions. Unfortunately, all the published work-conservation results for crossbar scheduling apply only to systems that switch fixed-length cells, not variable length packets. Routers that use a cellbased crossbar with a nominally work-conserving… CONTINUE READING
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