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Cisco 3200 Series Router Hardware Reference
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Chapter 7 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.)
• IOS image
• Web management files needed by the HTTP server on the WMIC
• radio firmware 6500.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 WMIC image from a TFTP server or upload the image from the WMIC to a TFTP
server.
You download an WMIC image file from a server to upgrade the WMIC software. You can overwrite the
current image with the new one.
You upload an WMIC image file to a server for backup purposes; this uploaded image can be used for
future downloads to the same or another device of the same type.
This section includes this information:
• Preparing to Download or Upload an Image File by Using TFTP, page 7-19
• Downloading an Image File by Using TFTP, page 7-20
• Uploading an Image File by Using TFTP, page 7-22

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