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The S3048-ON is used as a Top-of-Rack (ToR) switch that aggregates all of the management connections. Each switch has a connection from the out-of-band (OOB) management port to the ToR, as well as each Isilon Node and PowerEdge server. The first Isilon node management connections are shown, and each additional node is cabled similarly. This can be seen in the following figure, and all equipment in other racks is configured in a similar fashion.
Figure 9. Management configurations for rack 1