B-19
Catalyst 3750 Metro Switch Software Configuration Guide
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Appendix B Working with the Cisco IOS File System, Configuration Files, and Software Images
Working with Software Images
Deleting a Stored Configuration File
To delete a saved configuration from flash memory, use the delete flash:filename privileged EXEC
command. Depending on the setting of the file prompt global configuration command, you might be
prompted for confirmation before you delete a file. By default, the switch prompts for confirmation on
destructive file operations. For more information about the file prompt command, refer to the Cisco IOS
Command Reference for Release 12.1.
Caution You cannot restore a file after it has been deleted.
Working with Software Images
This section describes how to archive (download and upload) software image files, which contain the
system software and the Cisco IOS code.
Note Instead of using the copy privileged EXEC command or the archive tar privileged EXEC command, we
recommend using the archive download-sw and archive upload-sw privileged EXEC commands to
download and upload software image files.
You download a switch image file from a TFTP, FTP, or RCP server to upgrade the switch software. You
can replace the current image with the new one or keep the current image in flash memory after a
download.
You upload a switch image file to a TFTP, FTP, or RCP server for backup purposes. You can use this
uploaded image for future downloads to the same switch or another of the same type.
The protocol you use depends on which type of server you are using. The FTP and RCP transport
mechanisms provide faster performance and more reliable delivery of data than TFTP. These
improvements are possible because FTP and RCP are built on and use the TCP/IP stack, which is
connection-oriented.
This section includes this information:
• Image Location on the Switch, page B-20
• tar File Format of Images on a Server or Cisco.com, page B-20
• Copying Image Files By Using TFTP, page B-21
• Copying Image Files By Using FTP, page B-24
• Copying Image Files By Using RCP, page B-28
Note For a list of software images and the supported upgrade paths, refer to the release notes that shipped with
your switch.
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