20-20
Cisco IOS Software Configuration Guide for Cisco Aironet Access Points
OL-30644-01
Chapter20 Managing Firmware and Configurations
Working with Software Images
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, page20-20
•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.
•Ensure that the access point has a route to the TFTP server. The access point and the TFTP server
must be in the same subnetwork if you do not have a router to route traffic between subnets. Check
connectivity to the TFTP server by using the ping command.
•Ensure that the image to be downloaded is in the correct directory on the TFTP server.
•For download operations, ensure that the permissions on the file are set correctly. The permission
on the file should be world-read.
•During upload operations, if you are overwriting an existing file on the server, ensure that the
permissions on the file are set correctly. Permissions on the file should be world-write.

Downloading an Image File by Using TFTP

You can download a new image file and replace the current image or keep the current image.
Caution For the download and upload algorithms to operate properly, do not rename image directories.
Beginning in privileged EXEC mode, follow Steps 1 through 3 to download a new image from a TFTP
server and overwrite the existing image.