Planning irf topology and connections – H3C Technologies H3C S5800 Series Switches User Manual
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Identifying the master switch and planning IRF member IDs
Determine which switch you want to use as the master for managing all member switches in the IRF fabric.
An IRF fabric has only one master switch. You configure and manage all member switches in the IRF
fabric at the command line interface of the master switch.
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
S5820X & S5800 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. An
IRF port is activated when you bind a physical port to it.
When connecting IRF member switches, you must connect the physical ports of IRF-port1 on one switch
to the physical ports of IRF-port2 on its neighbor switch.
The S5800 switches can provide 10-GE IRF connections through SFP+ ports or 1/10Gbase-T Ethernet
ports, and you can bind several SFP+ ports or 1/10Gbase-T Ethernet ports to an IRF port for increased
bandwidth and availability.
NOTE:
•
and
show the topologies for an IRF fabric made up of three S5800-32C switches
that use the LSW1SP4P0 interface card for IRF connections.
•
The IRF port connections in the two figures are for illustration only, and more connection methods are
available.
•
For information about the physical ports available for IRF connections on different S5800 switches,
see
.
Figure 91 IRF fabric in daisy chain topology
1
2
3
IRF-port1
IRF-port2
IRF-port1
IRF-port2
1
2
3