>   The DTU *resets* (i.e. restarts the firmware from scratch) on a
>
> few occasions such as the power surge and loss of connectivity to
>
> the server with a 1-2 minute timeout, and that can be managed by
>
> ARP, router or firewall tweaking as Bob Doolittle suggested recently.
>
>
I understand what you need to do now.


>
>   A simple restart of the session (killing the X server, ending the
>
> last critical Kiosk app) should only cause a search for an avilable
>
> session (creation of a session) on the Sun Ray servers. The firmware
>
> still uses the same IP settings, list of servers, etc. so it's not
>
> truly resetting at this point.
>

indeed.

>
>   What I did not get from this thread, why is it critical to *reset*
>
> the DTU? Should some USB-attached hardware or a display re-initialize?
>
>
>   As a side note, if the budget permits, you could try to go with
>
> a managed Rack PDU (i.e. an APC AP7920). These neat boxes allow you
>
> to log in remotely (including a scriptable CLI) and reset the power
>
> receptacles. Alternatively (and cheaper) you can get a small UPS
>
> with a serial or USB management, and try to use NUT (Network UPS
>
> tools) to trigger a shutdown of the UPS. At least the Powercom ones
>
> I had in campus long ago, powered back up as soon as they detected
>
> line voltage - and that was a matter of a few seconds.
>

Or we could provide some POE dongles for the SR2 and you can manage the POE
switch to do this trick.

patrick
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