H3C Technologies H3C S5820V2 Series Switches - Manual (Page 36)

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IRF member switches are all in one equipment room, choose twisted pair/SFP+/QSFP+ DAC cables. For
more information about available SFP+/QSFP+ DAC cables and transceiver modules, see " SFP+ port "
and " QSFP+ port ."
The following subsections describe several H3C recommended IRF connection schemes, and all these
schemes use a ring topology.
Connecting the IRF member switches in one rack
Use short-haul and long-haul SFP+ DAC cables to connect the IRF member switches (four switches in this
example) in a rack as shown in
Figure 30 . The switches in the ring topology (see Figure 31 ) are in the
same order as connected in the rack.
Figure 30 Connecting the switches in one rack
Figure 31 IRF fabric topology
Connecting the IRF member switches in a ToR solution
You can install IRF member switches in different racks side by side to deploy a top of rack (ToR) solution.
Figure 32 shows an example for connecting four top of rack IRF member switches by using SFP+/QSFP+
DAC cables, and SFP+/QSFP+ transceiver modules, and optical fibers. The topology is the same
as Figure 31 .
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