White Papers

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 {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.
● 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.
DellEMC#restore factory-defaults 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.
When you restore factory-default settings, you can either use a flash boot procedure or a network boot procedure to boot the
switch.
When you use a flash boot procedure to boot the switch, the reset boot variables are displayed below restore bootvar in
the command output.
● If the primary boot line is A: and the A: partition contains a valid image, the primary boot line is set to A:, the secondary boot
line is set to B: (if B: also contains a valid image), and default boot line is set to a Null String.
● If the primary boot line is B: and the B: partition contains a valid image, the primary boot line is set to B:, the secondary boot
line is set to A: (if A: also contains a valid image), and default boot line is set to a Null string.
● If either partition contains an invalid or corrupted image, the partition is not set in any of the boot lines. If both partitions
contain invalid images, the primary, secondary, and default boot lines are set to a Null string.
When you use a network boot procedure to boot the switch, the reset boot variables are displayed below restore bootvar
in the command output.
● If the primary partition contains a valid image and the secondary partition does not contain a valid image, the primary boot
line is set to A: and the secondary and default boot lines are set to a Null string.
● If both partitions have valid images, the primary boot line value is set to the partition configured to boot the device in case of
a network failure. The secondary and default boot lines are set to a Null string.
Management
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