Boot Next - Mellanox Technologies Mellanox SX1018 Command Reference Manual

boot next

boot next fallback-reboot enable
no boot next fallback-reboot enable
Sets the default setting for next boot. Normally, if the system fails to apply the config-
uration on startup (after attempting upgrades or downgrades, as appropriate), it will
reboot to the other partition as a fallback.
The no form of the command tells the system not to do that, only for the next boot.
Syntax Description N/A
Default N/A
Configuration Mode Config
History 3.2.0506
Role admin
Example
switch (config) # boot fallback-reboot enable
switch (config) #
Related Commands show images
Note
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Normally, if the system fails to apply the configuration on startup (after attempting
upgrades or downgrades, as appropriate) it reboots to the other partition as a fallback.
The no form of this command tells the system not to do that only for the next boot. In other
words, this setting is not persistent, and goes back to enabled automatically after each boot.
When downgrading to an older software version which has never been run yet on a system,
the "fallback reboot" always happens, unless the command "no boot next fallback-reboot
enable" is used. However, this also happens when the older software version has been run
before, but the configuration file has been switched since upgrading. In general, a down-
grade only works (without having the fallback reboot forcibly disabled) if the process can
find a snapshot of the configuration file (by the same name as the currently active one)
which was taken before upgrading from the older software version. If that is not found, a
fallback reboot is performed in preference to falling back to the initial database because the
latter generally involves a loss of network connectivity, and avoiding that is of paramount
importance.
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