54 
Step Description 
1.  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 scheme 
2.  Install IRF member 
switches 
See “Installing the switch.” 
3.  Connect the grounding 
cable and power cords 
See “Grounding the switch” and “Connecting the power cord.” 
4.  Power on the switches 
N/A 
5.  Install interface cards 
This step is required only for the 5120 EI switches.  
See “Installing/removing an interface car
d (only for the 5120 EI switches).” 
6.  Configure basic IRF 
settings 
See “Configuring basic IRF settings.” 
7.  Connect the physical IRF 
ports 
See “Connecting the physical IRF ports.” 
All switches except the master
 switch automatically reboot, and the IRF fabric 
is established. 
 
Planning IRF fabric setup 
Planning IRF fabric size and the installation site 
Choose switch models and identify the number of required IRF member switches, depending on the user 
density and upstream bandwidth requirements. The switching capacity of an IRF fabric equals the total 
switching capacities of all member switches.  
 
  NOTE: 
As your business grows, you can plu
 a switch into an IRF fabric to increase the switchin
 capacity withou
any topology change or replacement. 
 
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 the
IRF configuration guide for your switch.  
 
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.