B-8
Catalyst 3750 Metro Switch Software Configuration Guide
78-15870-01
Appendix B Working with the Cisco IOS File System, Configuration Files, and Software Images
Working with Configuration Files
Working with Configuration Files
This section describes how to create, load, and maintain configuration files.
Configuration files contain commands entered to customize the function of the Cisco IOS software. A
way to create a basic configuration file is to use the setup program or to enter the setup privileged EXEC
command. For more information, see Chapter 3, “Assigning the Switch IP Address and Default
Gateway.”
You can copy (download) configuration files from a TFTP, FTP, or RCP server to the running
configuration or startup configuration of the switch. You might want to perform this for one of these
reasons:
• To restore a backed-up configuration file.
• To use the configuration file for another switch. For example, you might add another switch to your
network and want it to have a configuration similar to the original switch. By copying the file to the
new switch, you can change the relevant parts rather than recreating the whole file.
• To load the same configuration commands on all the switches in your network so that all the
switches have similar configurations.
You can copy (upload) configuration files from the switch to a file server by using TFTP, FTP, or RCP.
You might perform this task to back up a current configuration file to a server before changing its
contents so that you can later restore the original configuration file from the server.
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:
• Guidelines for Creating and Using Configuration Files, page B-8
• Configuration File Types and Location, page B-9
• Creating a Configuration File By Using a Text Editor, page B-9
• Copying Configuration Files By Using TFTP, page B-10
• Copying Configuration Files By Using FTP, page B-12
• Copying Configuration Files By Using RCP, page B-15
• Clearing Configuration Information, page B-18
Guidelines for Creating and Using Configuration Files
Creating configuration files can aid in your switch configuration. Configuration files can contain some
or all of the commands needed to configure one or more switches. For example, you might want to
download the same configuration file to several switches that have the same hardware configuration.
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