30Step Description2. Install IRF member switches. See "Installing the switch in a 19-inch rack" or "Mounting the switchon a workbench."3. Connect grounding cables andpower cords.See "Grounding the switch," "Installing and removing a powermodule," and "Connecting the power cord."4. Power on the switches. N/A5. Configure basic IRF settings.See the IRF configuration guide or virtual technologiesconfiguration guide for the switch series, depending on the softwareversion.6. Connect the IRF physical ports.Connect IRF physical ports on switches. For long-distanceconnection, use SFP/SFP+ transceiver modules and optical fibers.For short-distance connection, use twisted-pair cables orSFP/SFP+ cables.All switches except the master switch automatically reboot, and theIRF fabric is established.Planning IRF fabric setupThis section describes issues that an IRF fabric setup plan must cover.Planning IRF fabric size and the installation siteChoose switch models and identify the number of required IRF member switches, depending on theuser density and upstream bandwidth requirements. The switching capacity of an IRF fabric equalsthe total switching capacities 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 ToR access solution fora data center.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 CLI of the master switch. IRF member switches 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 the IRF configuration guide or virtual technologiesconfiguration guide for the switch series, depending on the software version.Prepare an IRF member ID assignment scheme. An IRF fabric uses member IDs to uniquely identifyand manage its members, and you must assign each IRF member switch a unique member ID.Planning IRF topology and connectionsYou 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 connectionsbetween IRF member switches. Each IRF member switch has two IRF ports: IRF-port 1 and IRF-port2. To use an IRF port, you must bind at least one physical port to it.