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20-9
Cisco IOS Software Configuration Guide for Cisco Aironet Access Points
OL-29225-01
Chapter 20 Managing Firmware and Configurations
Working with Configuration Files
configuration is used. However, some commands in the existing configuration might not be replaced
or negated. In this case, the resulting configuration file is a mixture of the existing configuration file
and the copied configuration file, with the copied configuration file having precedence.
To restore a configuration file to an exact copy of a file stored on a server, copy the configuration
file directly to the startup configuration (by using the copy {ftp: | rcp: | tftp:}
nvram:startup-config privileged EXEC command), and reload the access point.
Configuration File Types and Location
Startup configuration files are used during system startup to configure the software. Running
configuration files contain the current configuration of the software. The two configuration files can be
different. For example, you might want to change the configuration for a short time period rather than
permanently. In this case, you would change the running configuration but not save the configuration by
using the copy running-config startup-config privileged EXEC command.
The running configuration is saved in DRAM; the startup configuration is stored in the NVRAM section
of Flash memory.
Creating a Configuration File by Using a Text Editor
When creating a configuration file, you must list commands logically so that the system can respond
appropriately. This is one method of creating a configuration file:
Step 1 Copy an existing configuration from an access point to a server.
For more information, see the “Downloading the Configuration File by Using TFTP” section on
page 20-10, the “Downloading a Configuration File by Using FTP” section on page 20-12, or the
“Downloading a Configuration File by Using RCP” section on page 20-16.
Step 2 Open the configuration file in a text editor such as vi or emacs on UNIX or Notepad on a PC.
Step 3 Extract the portion of the configuration file with the desired commands, and save it in a new file.
Step 4 Copy the configuration file to the appropriate server location. For example, copy the file to the TFTP
directory on the workstation (usually /tftpboot on a UNIX workstation).
Step 5 Make sure the permissions on the file are set to world-read.
Copying Configuration Files by Using TFTP
You can configure the access point by using configuration files you create, download from another
access point, or download from a TFTP server. You can copy (upload) configuration files to a TFTP
server for storage.
This section includes this information:
• Preparing to Download or Upload a Configuration File by Using TFTP, page 20-10
• Downloading the Configuration File by Using TFTP, page 20-10
• Uploading the Configuration File by Using TFTP, page 20-11