H3C S9820-64H Manual page 35

For more information about available cables, see H3C S9820-64H Switch Hardware Information and
Specifications.
The following 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
Figure4-4 shows an example for connecting four IRF member switches in a rack. The switches in the
ring topology (see Figure4-5) are in the same order as connected in the rack.
Figure4-4 Connecting the switches in one rack
1
2
3
4
Figure4-5 IRF fabric topology
1
4
2
3
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