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Catalyst 6500 Series Switch Software Configuration Guide—Release 8.7
OL-8978-04
Chapter 27 Working with System Software Images
Verifying the Software Images
Step 6 After the download, the console port returns to 9600, which is the default baud rate. If the download took
place at other than 9600 baud, you must change the remote computer’s baud rate back to 9600 baud.
Step 7 Establish network connectivity to the switch to copy an image file from a TFTP server to one of the flash
devices.
Verifying the Software Images
Note This feature is not supported on Supervisor Engine 1.
Because a software image goes through a sequence of transfers before it is copied into the memory of
the switch, the integrity of the image is at risk each time that it is downloaded from Cisco.com. The
image size and checksum are automatically checked when the image is copied, but these types of checks
do not ensure that the downloaded image has not been corrupted. To ensure the integrity of any images
that you download, use the set image-verification command. You can set image verification to work
when booting, after the image has been copied, or before a system reset.
To enable the image verification, perform this task in privileged mode:
This example shows how to enable the image verification upon a switch reset:
Console> (enable) set image-verification reset enable
Console> (enable)
This example shows how to verify the image verification settings:
Console> (enable) show image-verification
Image Verification Status:
Boot: Disable
Copy: Disable
Reset: Enable
Console> (enable)
Task Command
Step 1
Enable the image verification. set image-verification [boot | copy | reset] enable
Step 2
Verify the image verification setting. show image-verification
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