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twisted pair cables or SFP+/QSFP+ transceiver modules with optical fibers. If the IRF member switches
are all in one equipment room, choose SFP+/QSFP+ cables. For more information about SFP+/QSFP+
cables and SFP+/QSFP+ transceiver modules, see "Appendix C Ports and LEDs."
T
he following subsections describe several H3C recommended IRF connection schemes, and all these
schemes use a ring topology.
IMPORTANT:
In these schemes, all physical IRF ports are located on the same side. If physical IRF ports are on different
sides, you must measure the distance between them to select an appropriate cable.
Connecting the IRF member switches in one rack
Use SFP+ cables to connect the IRF member switches (9 switches in this example) in a rack as shown
in Figure 59. T
he switches in the ring topology (see Figure 60) are in the same order as connected in the
rack.
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