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Planning the cabling scheme
You can use QSFP28/QSFP+ cables, or QSFP28/QSFP+ transceiver modules and fibers to connect
the S6850/S9850 switches for IRF connections.
If the switches are all in one equipment room, choose QSFP28/QSFP+ cables for IRF connections. If
the switches are far away from one another, choose QSFP28/QSFP+ transceiver modules and fibers
for IRF connections.
For more information about available cables, see "Appendix C Ports and LEDs."
The follo
wing subsections describe several IRF connection schemes by using the QSFP28 cables
and QSFP28 transceiver modules and fibers. As a best practice, use the ring topology for IRF
connections.
Connecting the IRF member switches in one rack
Figure 69 shows an example for connecting four IRF member switches in a rack. The switches in the
ring topology (see Figure 70) are in the same order a
s connected in the rack.
Figure 69 Connecting the switches in one rack
Figure 70 IRF fabric topology
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