Copying Image Files By Using Tftp; Preparing To Download Or Upload An Image File By Using Tftp - Cisco 2950 - Catalyst Switch Configuration Manual

Appendix B Working with the Cisco IOS File System, Configuration Files, and Software Images
Table B-3 info and info.ver File Description (continued)
Field
ios_image_file_size
total_image_file_size
image_feature
image_family
image_min_dram

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:
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Preparing to Download or Upload an Image File By Using TFTP

Before you begin downloading or uploading an image file by using TFTP, do these tasks:
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78-11380-10
Description
Specifies the software image size in the tar file, which is an approximate measure of how much
flash space is required to hold just the software image
Specifies the size of all the images (the software image and the HTML files) in the tar file,
which is an approximate measure of how much flash space is required to hold them
Describes the core functionality of the image
Describes the family of products on which the software can be installed
Specifies the minimum amount of DRAM needed to run this image
Preparing to Download or Upload an Image File By Using TFTP, page B-21
Downloading an Image File By Using TFTP, page B-22
Uploading an Image File By Using TFTP, page B-23
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
Note You must restart the inetd daemon after modifying the /etc/inetd.conf and /etc/services files.
To restart the daemon, either stop the inetd process and restart it, or enter a fastboot
command (on the SunOS 4.x) or a reboot command (on Solaris 2.x or SunOS 5.x). For more
information on the TFTP daemon, refer to the documentation for your workstation.
Ensure that the switch has a route to the TFTP server. The switch 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 (usually
/tftpboot on a UNIX workstation).
Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
Working with Software Images
B-21