boot
command
In redundant management systems, the boot
or boot active
command causes a
switchover to the standby management module as long as the standby
module is in standby mode. This message displays:
This management module will now reboot and will become the standby module! You will need to use the other management module's console interface. Do you want to continue [y/n]?
If you select y, switchover is initiated by the standby management module, which becomes the active management module after boot completes.
If the standby module is not in standby mode (for example, it is in failed mode or offline mode), switchover to the standby module does not occur. The system is rebooted and this message displays:
The other management module is not in standby mode and this command will not cause a switchover, but will reboot the system, do you want to continue [y/n]?
If the other management module is not present in the switch, the system simply reboots.
The boot
command has these
options.
Command |
Action |
---|---|
boot cr |
Reboots the active management module from the flash
image that is specified for the default boot. This can be changed
with the
boot set-default flash command. You can
select which image to boot from during the boot process itself. (See The management module rebooting, showing boot profiles to select.) The switch will switchover to the standby
management module.NOTE:
This is changed from always booting from primary flash. You are prompted with a message, which indicates the flash being booted from. |
boot active |
Boots the active management module. The switch starts to boot from the default flash image. You can select which image to boot from during the boot process itself. (See The management module rebooting, showing boot profiles to select.) The switch will switchover to the standby management module. If a second management module is not present in the switch, the system is rebooted. |
boot standby |
Boots the standby management module. The switch does not switchover.If the standby module is not present, this message displays: "The other management module is not present." |
|
Boots both the active and standby management modules. You can specify the flash image to boot from. |
|
Sets the default flash for the next boot to primary or secondary. You see this message:"This command changes the location of the default boot. This command will change the default flash image to boot from flash chosen>. Hereafter, ‘reload' and ‘boot' commands will boot from flash chosen>. Do you want to continue [y/n]?" |
You can select a boot profile during the reboot process, as shown in The management module rebooting, showing boot profiles to select. If you make no selection, the boot defaults to the image displayed as the default choice (shown in parentheses.)
An example of the boot
command
with the default flash set to secondary is shown in Showing boot command with default flash set to secondary.
For a given reboot, the switch automatically
reboots from the startup-config
file assigned
to the flash (primary or secondary) being used for the current reboot.
The startup-default
command can be used to set
a boot configuration policy. This means that both the flash image
and one of the three configuration files can be specified as the default
boot policy.