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Prepare an IRF member ID assignment scheme. An IRF fabric uses member IDs to uniquely identify and
manage its members, and you must assign each IRF member switch a unique member ID.
Planning IRF topology and connections
You can create an IRF fabric in daisy chain topology, or more reliably, ring topology. In ring topology,
the failure of one IRF link does not cause the IRF fabric to split as in daisy chain topology. Rather, the IRF
fabric changes to a daisy chain topology without interrupting network services.
You connect the IRF member switches through IRF ports, the logical interfaces for the connections
between IRF member switches. Each IRF member switch has two IRF ports: IRF-port 1 and IRF-port 2. To
use an IRF port, you must bind at least one physical port to it.
When connecting two neighboring IRF member switches, you must connect the physical ports of IRF-port
1 on one switch to the physical ports of IRF-port 2 on the other switch.
The HP 5700-48G-4XG-2QSFP+, HP 5700-48G-4XG-2QSFP+ TAA, HP 5700-40XG-2QSFP+, and HP
5700-40XG-2QSFP+ TAA switches can provide 10-GE and 40-GE IRF connections through SFP+ ports
and QSFP+ ports, respectively.
The HP 5700-32XGT-8XG-2QSFP+ and HP 5700-32XGT-8XG-2QSFP+ TAA switches can provide 10-GE
and 40-GE IRF connections through 1/10-GE Ethernet ports, SFP+ ports, or QSFP+ ports.
You can bind several ports of the same type to an IRF port for increased bandwidth and availability.
Figure 31
and
Figure 32
show the topologies of an IRF fabric made up of three HP FlexFabric 5700
switches. The IRF port connections in the two figures are for illustration only, and more connection
methods are available.
Figure 31 IRF fabric in daisy chain topology
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