Determining Physical Irf Ports On The Member Switches; Planning The Cabling Scheme - HP FlexFabric 7900 Series Installation Manual

Figure 33 IRF fabric in ring topology
1
2
3
IRF-port2

Determining physical IRF ports on the member switches

Determine the physical IRF ports on the member switches according to your topology and connection
scheme.
You can use 40-GE ports on the switch for IRF connection.
The switch supports multi-card link aggregation for IRF ports. You can bind up to eight physical ports to
one IRF port.

Planning the cabling scheme

Use QSFP+ transceiver modules and fibers for long-distance connection, or use QSFP+ cables to connect
QSFP+ ports for short-distance connection.
For more information about transceiver modules available for the switch, see
compatibility
The following subsections use QSFP+ cables and QSFP+ transceiver modules and fibers as examples to
describe several IRF connection schemes. All these schemes use a ring topology. HP recommends that
you connect IRF member switches using a ring topology.
Connecting the IRF member switches in one rack
Connect the IRF member switches (4 switches in this example) in a rack as shown in
switches in the ring topology (see
IRF-port1
IRF-port2
1
IRF-port1
IRF-port2
2
matrixes."
Figure
IRF-port1
3
35) are in the same order as connected in the rack.
31
"Appendix B FRUs and
Figure 34. The