3Com 7750 Series Command Reference Manual page 878

3Com Switch 7750 Series
Command Reference Guide – PoE
Note:
The full mode is used only when you cannot use the refresh mode.
When the PSE processing software is damaged (that is, all the PoE commands
cannot be successfully executed), you can use the full mode to update and restore
the software.
When the upgrade procedure is interrupted for some unexpected reasons (such as
failure which cause restart), if the update in the full mode fails after restart, you must
update the software in the full mode after power-off and restart of the device, and
then restart the device manually. In this way, the former PoE configuration is
restored.
Example
# Update the processing software in the PSE online.
<3Com>system-view
System View: return to User View with Ctrl+Z.
[3Com] poe upgrade refresh 0400_001.S19 slot 2
This will update poe
Board 2 upgrading poe, please wait...
Load finished!
Start Upgrading...
Frame 0 IO Board 2 upgrade POE Pse succeeded
file on board 2. Continue? [Y/N] y
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Chapter 1 PoE Configuration Commands