Planning IRF topology and connections
You can create an IRF fabric in daisy chain topology or more reliable ring topology. In ring topology,
the failure of one IRF link does not cause the IRF fabric to split as in daisy chain topology. Instead,
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 a minimum of 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.
As a best practice to avoid loop topology, first complete IRF configuration and then connect the IRF
The HPE 5510 HI switches can provide 10-GE IRF connections through SFP+ ports and 40-GE IRF
connections through QSFP+ ports, and you can bind several SFP+/QSFP+ ports to an IRF port for
increased bandwidth and availability.
4SFP+ HI switches. The IRF port connections in the two figures are for illustration only, and more
connection methods are available.
Figure 39 IRF fabric in daisy chain topology
Figure 40 IRF fabric in ring topology
show the topologies of an IRF fabric made up of three HPE 5510 24G