Create a Backup Copy of the Running Configuration
From within a device session, you can save a text file that contains a copy of the device's running configuration. This feature is available on ASA, IOS, IOS-XE, IOS-XR, NX-OS, and WLC platforms.
On the toolbar of the device session window, click the icon. The device executes the command show running-config. Navigate to the folder where you want to save the backup file and click Save.