Maintaining WLC Configurations
As you use the web-based controller GUI to make configuration changes, you need to click the Apply button to make the changes active. This is similar to configuring a router or switch, where changes take effect immediately and are updated in the running configuration, but are not saved to the startup configuration. As long as the controller stays up, your changes will stay active. If the controller reboots or loses power, your changes will be lost.
A controller also has nonvolatile storage for its configuration, much like flash memory. You can save the configuration by clicking the Save Configuration link at the upper right of any controller web page, as shown in Figure 21-9.
Figure 21-9 Saving the Controller ...
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