Managing Images and Files 365Why Is File Management Needed?This section provides some reasons why you might choose to manage variousfiles.Image FilesThe switch can store two firmware images, but only one is active. The otherimage file is a backup image. By default, the switch has only one image. Youmight copy an image or download an image to the switch for the followingreasons:• To create a backup image• To upgrade the firmware as new images become availableConfiguration FilesConfiguration files contain the CLI commands that change the switch fromits default configuration. The switch can maintain three separateconfiguration files: startup-config, running-config, and backup-config. Theswitch loads the startup-config file when the switch boots. Any configurationSSL certificate files Download Contains information to encrypt,authenticate, and validate HTTPS sessions.The switch supports the following files forSSL:• SSL Trusted Root Certificate File (PEMEncoded)• SSL Server Certificate File (PEMEncoded)• SSL Diffie-Hellman Weak EncryptionParameter File (PEM Encoded)• SSL Diffie-Hellman Strong EncryptionParameter File (PEM Encoded)IAS Users Download List of Internal Authentication Server (IAS)users for IEEE 802.1X authentication. Formore information, see What is the InternalAuthentication Server?Table 13-1. Files to ManageFile Action Description