H3C Technologies H3C S5120 Series Switches - Manual (Page 29)

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Setting up an IRF fabric
You can use H3C Intelligent Resilient Framework (IRF) technology to connect and virtualize 5120 EI
switches into a virtual switch called an "IRF fabric" or "IRF fabric" for flattened network topology, and
high availability, scalability, and manageability.
IRF is available on S5120-28C-EI, S5120-52C-EI, S5120-28C-PWR-EI, and S5120-52C-PWR-EI.
IRF fabric setup flowchart
Figure 24 IRF fabric setup flowchart