Dell PowerEdge FN I/O Module Configuration Guide 9.10(0.0)

To run offline diagnostics, use the following commands.

1. Place the unit in the offline state. EXEC Privilege mode offline stack-unit You cannot enter this command on a MASTER or Standby stack unit.
   • NOTE: The system reboots when the offline diagnostics complete. This is an automatic process. The following warning message appears when you implement the offline stack-unit command:

     Warning - offline of unit will bring down all the protocols and
                                                     the unit will be operationally down, except for running Diagnostics.
                                                     Please make sure that stacking/fanout not configured for Diagnostics execution.
                                                     Also reboot/online command is necessary for normal operation after the offline command is issued.
                                                     Proceed with Offline [confirm yes/no]:
                                                  

   Dell#offline stack-unit 0
                                       Warning - offline of unit will bring down all the protocols and
                                       the unit will be operationally down, except for running Diagnostics.
                                       Please make sure that stacking/fanout not configured for Diagnostics execution.
                                       Also reboot/online command is necessary for normal operation after the offline command is issued.
                                       Proceed with Offline [confirm yes/no]:yes
                                       Dell#
                                       
                                    

2. Confirm the offline status. EXEC Privilege mode show system brief

   Dell#show system brief 
                                       
                                       Stack MAC : 00:1e:c9:de:03:7b
                                       
                                       --  Stack Info  --
                                       Unit  UnitType     Status         ReqTyp          CurTyp          Version     Ports
                                       ------------------------------------------------------------------------------------
                                       0   Management   offline        PE-FN-410S-IOA  PE-FN-410S-IOA  1-0(0-1862)  12     
                                       1   Member       not present                    
                                       2   Member       not present                    
                                       3   Member       not present                    
                                       4   Member       not present                    
                                       5   Member       not present                    
                                       
                                       Dell#