Restoring The Factory Default Settings; Important Points To Remember; Restoring Factory Default Environment Variables - Dell Z9000 Configuration Manual

Restoring the Factory Default Settings

Restoring the factory-default settings deletes the existing NVRAM settings, startup configuration, and all
configured settings such as, stacking or fanout.
To restore the factory default settings, use the restore factory-defaults stack-unit {0-5 |
all} {clear-all | nvram} command in EXEC Privilege mode.
CAUTION: There is no undo for this command.

Important Points to Remember

• When you restore all the units in a stack, these units are placed in standalone mode.
• When you restore a single unit in a stack, only that unit is placed in standalone mode. No other units
in the stack are affected.
• When you restore the units in standalone mode, the units remain in standalone mode after the
restoration.
• After the restore is complete, the units power cycle immediately.
The following example illustrates the restore factory-defaults command to restore the factory default
settings.
Dell#restore factory-defaults stack-unit 0 nvram
***********************************************************************
* Warning - Restoring factory defaults will delete the existing
* persistent settings (stacking, fanout, etc.)
* After restoration the unit(s) will be powercycled immediately.
* Proceed with caution !
***********************************************************************
Proceed with factory settings? Confirm [yes/no]:yes
-- Restore status --
Unit Nvram Config
------------------------
0 Success
Power-cycling the unit(s).
....

Restoring Factory Default Environment Variables

The Boot line determines the location of the image that is used to boot up the chassis after restoring
factory default settings. Ideally, these locations contain valid images, using which the chassis boots up.
While restoring factory-default settings, you can either use a flash boot procedure or a network boot
procedure to boot the device.
When you use the flash boot procedure to boot the device, the boot loader checks if the primary or the
secondary partition contains a valid image. If the primary partition contains a valid image, then the
primary boot line is set to A: and the secondary and default boot lines are set to a Null String. If the
secondary partition contains a valid image, then the primary boot line is set to B: and the secondary and
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