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)