Planning irf topology and connections – H3C Technologies H3C S5820V2 Series Switches User Manual
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NOTE:
IRF member switches will automatically elect a master. You can affect the election result by assigning a
high member priority to the intended master switch. For more information about master election, see
H3C
S5830V2 & S5820V2 Switch Series IRF Configuration Guide.
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 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.
The S5820V2-52QF, S5820V2-52QF-U, and S5820V2-54QS-GE switches can provide 10-GE and
40-GE IRF connections through SFP+ ports and QSFP+ ports, respectively. You can bind several SFP+ or
QSFP+ ports to an IRF port for increased bandwidth and availability.
The S5820V2-52Q switch can provide 10-GE and 40-GE IRF connections through 1/10-GE Ethernet
ports or QSFP+ ports. You can bind several 1/10-GE Ethernet ports or QSFP+ ports to an IRF port for
increased bandwidth and availability.
The S5830V2-24S and S5820V2-48S switches can provide 10-GE IRF connections through SFP+ ports.
You can bind several SFP+ ports to an IRF port for increased bandwidth and availability.
and
show the topologies of an IRF fabric made up of three S5820V2-52QF switches
that use SFP+ ports for IRF connections.
The IRF port connections in the two figures are for illustration only, and more connection methods are
available.
Figure 28 IRF fabric in daisy chain topology