31
room, use QSFP28/QSFP+/QSFP+ to SFP+/SFP+ network cables for IRF connections. For more
information about available transceiver modules and cables, see "
Appendix C Ports and LEDs
."
The following subsections describe several IRF connection schemes. As a best practice, use the ring
topology for IRF connections.
Connecting the IRF member switches in one rack
Figure 37
shows an example for connecting four IRF member switches in a rack by using QSFP28
network cables and QSFP28 transceiver modules and optical fibers. The switches in the ring
topology (see
Figure 38
) are in the same order as connected in the rack.
Figure 37 Connecting the switches in one rack
Figure 38 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 39
shows an example for connecting four top of rack IRF member switches by using QSFP28
network cables and QSFP28 transceiver modules and optical fibers. The topology is the same
as
Figure 38
.
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