H3C Technologies H3C S7500E Series Switches - Manual (Page 31)

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The following might occur at the switch startup:
1. The switch starts up with the main system software image.
2. The main system software image is faulty and the switch starts up with the backup system software
image.
3. Both the main and backup system software images are faulty and the switch picks a random
system software image and starts up with it.
4. If the switch still cannot start up with the random system software image, it decides that there is no
valid system software image and stops picking any system software image.
Handling upgrade failures
If an upgrade failure occurs, the switch operates using the original version.
To handle upgrade failure:
1. Examine the connections of the physical ports. Reconnect ports that are not properly connected
and download the system software images again.
2. Examine the HyperTerminal output for errors and typos. Correct errors and typos and download
the system software image again. The errors can be:
{
You have selected a baud rate of another value rather than 9600 bps to download the .app file
from the boot menu, but did not set to the corresponding baud rate on HyperTerminal.
{
You typed an incorrect IP address of the TFTP server or switch, filename, or TFTP work directory.
{
You typed an incorrect IP address of the FTP server or switch, filename, FTP username,
password, or FTP work directory.
3. Verify that FTP or TFTP server software is running and has correct settings.
4. Verify that the flash has enough memory to store the downloaded files.
5. Verify that system software and Boot ROM are compatible. For the compatibility between the
system software and the Boot ROM, see the hardware and software compatibility matrix in
Release Notes.
6. Verify that the Boot ROM image is applicable to the target cards.
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