288 | Z-Series Debugging and Diagnosticsw w w . d e l l . c o m | s u p p o r t . d e l l . c o m Running Offline Diagnostics1. Place the unit in the offline state using the offline stack-unit command from EXEC Privilege mode, asshown in Taking a Z-Series Stack Unit Offline. You cannot enter the command on a stacking unit.Figure 12-1. Taking a Z-Series Stack Unit OfflineFTOS#offline stack-unit 0Warning - offline of stack unit will bring down all the protocols andthe 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]:yesFTOS#00:01:34: %STKUNIT0-M:CP %CHMGR-2-STACKUNIT_DOWN: Stack unit 0 down - stack unit offline00:01:34: %STKUNIT0-M:CP %IFMGR-1-DEL_PORT: Removed port: Fo 0/0,4,8,12,16,20,24,28,32,36,40,44,48,52,56,60,64,68,72,76,80,84,88,92,96,100,104,108,112,116,120,124,2. Use the show system brief command from EXEC Privilege mode to confirm offline status, as shownin the following example. Results are captured in one file whether for one unit or multiple units.Note: The system reboots when the off-line diagnostics complete. This is an automatic process in defaultmode. A warning message appears when the offline stack-unit command is implementedWarning - offline of stack unit will bring down all the protocols and the unit will beoperationally down, except for running Diagnostics.Proceed with Offline-Diags [confirm yes/no]:yYou must reload the system after the offline command is issued for normal system operation.
