Saving the Configuration After Installing or Exchanging a Module
The following cases automatically result in a change to the running-configuration on your switch:
■
If you replace a module with another module of a different type and then reboot the switch
■
If you install a module in a slot that has not previously been used (including when you install
a module and apply power to the switch for the first time)
If you want to save such changes to permanent memory (startup-configuration), use switch console
CLI interface and enter the
write memory
command. This causes the switch to use the current
hardware configuration after subsequent reboots. (The switch always reboots from the startup-
configuration.)
If you do not save hardware changes to the startup-configuration, you will be prompted with the
following message (to save the configuration) the next time you use the reboot or reload commands,
or if you move from the CLI to the Menu interface:
Do you want to save the current configuration [y/n] ?
Note that if you exchange module types in a slot and reboot the switch, but do not save the
configuration, you can restore the switch to its prior configuration state by re-installing the original
module type in the slot and rebooting the switch again. This is because the switch operates by using
the running-config, but reboots from the startup-config.
Replacing a module with another module of the same type in the same slot does not affect the switch
configuration and it is not necessary to save the configuration.
For more information on switch memory, including the startup-config and running-config memories,
refer to the
Management and Configuration Guide
on the
Documentation CD-ROM
included with
your switch.
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