D-Link DGS-3130 Series - Page 45

DGS-3130 Series Layer 3 Stackable Managed Switch Hardware Installation Guide
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The figure below illustrates how switches can be stacked in a Duplex Ring formation using RJ45 cables, optical fiber
cables connected to SFP+ transceivers or DAC with SFP+ connectors where the 2-port or 4-port stacking
configuration is used.
Figure 4-7 2-port Duplex Ring stacking topology (10GBase-T ports)