24Step Description1. Plan IRF fabric setup.Plan the installation site and IRF fabric setup parameters:• Planning IRF fabric size and the installation site• Identifying the master switch and planning IRF member IDs• Planning IRF topology and connections• Identifying physical IRF ports on the member switches• Planning the cabling scheme2. Install IRF memberswitches. See "Rack-mounting the switch" or "Workbench-mounting the switch."3. Connect groundcables and powercords.See "Grounding the switch with a grounding strip" and "Connecting the powercord."4. Power on theswitches. N/A5. Configure basic IRFsettings. See H3C S5120-SI Switch Series IRF Configuration Guide.6. Connect the physicalIRF ports.Use SFP transceiver modules and fibers as well as twisted pair Ethernetcables for long-distance connection. Use SFP network cables forshort-distance connection.All switches except the master switch automatically reboot, and the IRF fabricis established.Planning IRF fabric setupThis section describes issues that an IRF fabric setup plan must cover.Planning IRF fabric size and the installation siteDetermine the number of required IRF member switches, depending on the user density andupstream bandwidth requirements. The switching capacity of an IRF fabric equals the total switchingcapacities of all member switches.Plan the installation site depending on your network solution as follows:• Place all IRF member switches in one rack for centralized high-density access.• Distribute the IRF member switches in different racks to implement the top-of-rack (ToR) accesssolution for a data center.As your business grows, you can add member switches into the IRF fabric to increase the switchingcapacity without any topology change or replacement.Identifying the master switch and planning IRF member IDsDetermine which switch you want to use as the master for managing all member switches in the IRFfabric. An IRF fabric has only one master switch. You configure and manage all member switches inthe 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 byassigning a high member priority to the intended master switch. For more information about masterelection, see H3C S5120-SI Switch Series IRF Configuration Guide.