Setup Guide

The following example illustrates the restore factory-defaults command to restore the factory default settings.
DellEMC#restore factory-defaults stack-unit 1 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
------------------------
1 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 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
default boot lines are set to a Null String. If both the partitions contain invalid images, then primary, secondary, and default boot line values
are set to a Null string.
When you use the Network boot procedure to boot the device, the boot loader checks if the primary partition contains a valid image. If a
valid image exists on the primary partition and the secondary partition does not contain 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 also contains a valid image, then the primary
boot line value is set to the partition that is configured to be used to boot the device in a network failure scenario. The secondary and
default boot line values are set to a Null string.
Important Points to Remember
• The Chassis remains in boot prompt if none of the partitions contain valid images.
• To enable TFTP boot after restoring factory default settings, you must stop the boot process in BLI.
Viewing the Reason for Last System Reboot
You can view the reason for the last system reboot. To view the reason for the last system reboot, follow this procedure:
• Use the following command to view the reason for the last system reboot:
EXEC or EXEC Privilege mode
show reset-reason [stack-unit {unit-number | all}]
Enter the stack-unit keyword and the stack unit number to view the reason for the last system reboot for that stack unit.
Enter the stack-unit keyword and the keyword all to view the reason for the last system reboot of all stack units in the stack.
DellEMC#show reset-reason
Cause : Reset by User through CLI command
Reset Time: 11/05/2017-08:36
DellEMC# show reset-reason stack-unit 1
Cause : Reset by User through CLI command
Reset Time: 11/05/2017-08:36
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Management