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Cisco IOS Software Configuration Guide for Cisco Aironet Access Points
OL-29225-01
Chapter20 Managing Firmware and Configurations
Working with Software Images
tar File Format of Images on a Server or Cisco.com
Software images located on a server or downloaded from Cisco.com are provided in a tar file format,
which contains these files:
•info file
The info file is always at the beginning of the tar file and contains information about the files within
it.
•Cisco IOS image
•Web management files needed by the HTTP server on the access point
•radio firmware 5000.img file
•info.ver file
The info.ver file is always at the end of the tar file and contains the same information as the info file.
Because it is the last file in the tar file, its existence means that all files in the image have been
downloaded.
Note The tar file sometimes ends with an extension other than .tar.
Copying Image Files by Using TFTP
You can download an access point image from a TFTP server or upload the image from the access point
to a TFTP server.
You download an access point image file from a server to upgrade the access point software. You can
overwrite the current image with the new one.
You upload an access point image file to a server for backup purposes; this uploaded image can be used
for future downloads to the same or another access point of the same type.
This section includes this information:
•Preparing to Download or Upload an Image File by Using TFTP, page20-19
•Downloading an Image File by Using TFTP, page20-20
•Uploading an Image File by Using TFTP, page20-22

Preparing to Download or Upload an Image File by Using TFTP

Before you begin downloading or uploading an image file by using TFTP, perform these tasks:
•Ensure that the workstation acting as the TFTP server is properly configured. On a Sun workstation,
make sure that the /etc/inetd.conf file contains this line:
tftp dgram udp wait root /usr/etc/in.tftpd in.tftpd -p -s /tftpboot
Make sure that the /etc/services file contains this line:
tftp 69/udp