Managing system files 747
Nortel WLAN—Security Switch 2300 Series Configuration Guide

Using an image file’s MD5 checksum to verify its integrity

If you download an image file from the Nortel support site and install it in a switch’s boot partition, you can verify that
the file has not been corrupted while being copied.
md5 [boot0: | boot1:]filename
To verify an image file’s integrity:
1Download the image file from the Nortel support site onto a TFTP server, and use the CLI copy tftp
command on the WSS to copy the image onto the switch’s nonvolatile storage.
2On the Nortel support site, click on the MD5 link next to the link for the image file, to display the MD5
checksum for the file. Here is an example:
b9cf7f527f74608e50c70e8fb896392a NT504103.001
3On the WSS, use the dir command to display the contents of nonvolatile storage.
4Enter a command such as the following to calculate the checksum for the file:
pubs# md5 boot0:NT504103.00 1
MD5 (boot0:NT504103.001) = b9cf7f527f74608e50c70e8fb896392a
5Compare the checksum on the support site with the checksum calculated by the WSS. If they match, then
the file has not been corrupted.
6If you have not already done so, use the set boot partition command to configure the WSS to boot from
the partition containing the new image.
7Use the reset system [force] command to restart the switch using the new image.
Note. You must include the boot partition name in the filename. For example,
you must specify boot0:NT504103.001. If you specify only NT504103.001, the CLI
displays a message stating that the file does not exist.