Changing or overriding the reboot configuration policy
To change the reboot configuration policy, do one of the following:
Use the startup-default primary config <filename> command to change the current policy so that the switch automatically reboots from the primary flash using the specified startup-config file. The filename argument specifies the startup-config file to use.
Use the startup-default secondary config <filename> command to change the current policy so that the switch automatically reboots from the secondary flash using the specified startup-config file. The filename argument specifies the startup-config file to use.
To override the default reboot configuration policy for a single reboot instance, do one of the following:
Use the boot system flash primary config <filename> command to override the current policy so that the switch automatically reboots from the primary flash using the specified startup-config file. The filename argument specifies the startup-config file to use.
Use the boot system flash secondary config <filename> command to override the current policy so that the switch automatically reboots from the secondary flash using the specified startup-config file. The filename argument specifies the startup-config file to use.
Reboot configuration policy that uses different startup-config files for different software versions
Suppose that you have the following situation:
Software release “A” is stored in primary flash and a later software release is stored in secondary flash.
Memory slot 1 stores a reliable, minimal configuration (named
minconfig
) to be used with the software version in the primary flash.Memory slot 2 stores a modified startup-config file (named
newconfig
) to be used with the software version in secondary flash. This startup-config file includes untested changes for improved network operation.
The operator wants to ensure that in case of a need to reboot by pressing the Reset button, or if a power failure occurs, the switch will automatically reboot with the minimal startup-config file in memory slot 1. Since a reboot due to pressing the Reset button or to a power cycle always uses the software version in primary flash, the operator has to configure the switch to always boot from primary flash with the startup-config file named
minconfig
(in memory slot 1). Also, whenever the switch boots from secondary flash, the operator also wants the startup-config named
newconfig
to be used. The following two commands configure the desired behavior.
switch(config)# startup-default primary config minconfig
switch(config) # startup-default secondary config newconfig