Abstract—A folded Clos network (FCN) is the topology often
used for data center networks. Its performance depends on the
flow diffusion algorithm executed at the input/output switches.
Several algorithms that diffuse flows more equally between
links than conventional random routing have been proposed in
the past. It is expected that those algorithms prevent the TCP
(transmission control protocol) throughput from decreasing
due to traffic congestion. However, it is unclear whether these
flow diffusion algorithms are significantly effective for avoiding
throughput degradation of a TCP flow compared with
conventional random routing. This paper investigates the
effectiveness of flow diffusion algorithms for TCP throughput
through packet-level computer simulation. The results confirm
that flow diffusion algorithms can efficiently reduce the number
of TCP flows, the throughputs of which are degraded.
Index Terms—Computer simulation, data center network,
routing, switching network.
S. Ohta is with Toyama Prefectural University, Kurokawa 5180,
Imizu-shi, Toyama, 939-0398 Japan (e-mail: ohta@pu-toyama.ac.jp).
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Cite: Satoru Ohta, "TCP Throughput Achieved by a Folded Clos Network Controlled by Different Flow Diffusion Algorithms," International Journal of Information and Electronics Engineering vol. 10, no. 1, pp. 16-21, 2020.
