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B-21
Catalyst 3550 Multilayer Switch Software Configuration Guide
78-11194-03
Appendix B Working with the IOS File System, Configuration Files, and Software Images
Working with Software Images
Copying Image Files By Using TFTP
You can download a switch image from a TFTP server or upload the image from the switch to a TFTP
server.
You download a switch image file from a server to upgrade the switch software. You can overwrite the
current image with the new one or keep the current image after a download.
You upload a switch image file to a server for backup purposes; this uploaded image can be used for
future downloads to the same or another switch of the same type.
This section includes this information:
• Preparing to Download or Upload an Image File By Using TFTP, page B-22
• Downloading an Image File By Using TFTP, page B-22
• Uploading an Image File By Using TFTP, page B-24
Table B-3 info and info.ver File Description
Field Description
version_suffix Specifies the IOS image version string suffix
version_directory Specifies the directory where the IOS image and the HTML subdirectory are installed
image_name Specifies the name of the IOS image within the tar file
ios_image_file_size Specifies the IOS image size in the tar file, which is an approximate measure of how much
Flash space is required to hold just the IOS image
total_image_file_size Specifies the size of all the images (the IOS image and the HTML files) in the tar file, which
is an approximate measure of how much Flash space is required to hold them
image_feature Describes the core functionality of the image
image_family Describes the family of products on which the software can be installed
image_min_dram Specifies the minimum amount of DRAM needed to run this image