Abstract
Switch fabrics for 100 Gigabit Ethernet systems
pose high demands in terms of delay and scalability. In this paper
we analyze the performance of a Clos-based switch fabric under
uniform and bursty traffic, and compare its performance to a
crossbar-based switch design for benchmarking. In particular, we
focus on a Clos-design using a Space-Memory-Memory (SMM)
configuration, which has recently gained increased interest due to
its reduced hardware complexity. The traffic between the input
and the central modules is distributed in either a static, random
or Desynchronized Static Round Robin (DSRR) fashion.
Simulation results show that for uniform Bernoulli traffic,
the DSRR scheme outperforms the others. Under bursty traffic,
the DSRR scheme and the random scheme achieve similar
performance. The static scheme performs the worst for both
cases. Comparing the SMM design to an Output Queued crossbar
switch only reveals a minor performance penalty, which can
be compensated by the high scalability, robustness and low
complexity of the Clos-based design for high speed switching
systems.
| Original language | English |
|---|---|
| Title of host publication | ONDM 2011 : 15th International Conference on Optical Network Design and Modeling |
| Publisher | IEEE |
| Publication date | 2011 |
| ISBN (Print) | 978-3-901882-42-5 |
| Publication status | Published - 2011 |
| Event | International Conference on Optical Network Design and Modeling - Bologna, Italy Duration: 1 Jan 2011 → … Conference number: 15 |
Conference
| Conference | International Conference on Optical Network Design and Modeling |
|---|---|
| Number | 15 |
| City | Bologna, Italy |
| Period | 01/01/2011 → … |