[Soekris] spontaneous reboot with large packet flows on net5501+lan1741

Christopher Hilton chris at vindaloo.com
Wed Feb 18 04:08:42 CET 2015


Sorry, The Soekris Rackmount supply is 12V x 5.0A

-- Chris

On Feb 17, 2015, at 3:56 PM, Andrew Atrens wrote:

> 5A should be plenty I'd think .. but I guess it also depends on the voltage ..
> 
> A few years ago I experienced issues with an ALIX board and a high power Ubiquiti/Atheros-based mini-PCI card .. if memory serves I think it was an XR-2 .. in that case though the miniPCI card would sort of brown out and that could lock up the PCI bus leading to a kernel crash or watchdog reset.  In that situation the issue was internal to the PUPS on the ALiX board - a known limitation wrt how how much power could be supplied to the miniPCI slot.
> 
> 
> 
> On 2015-02-17 2:02 PM, Christopher Sean Hilton wrote:
>> On Tue, Feb 17, 2015 at 01:37:51PM -0500, Andrew Atrens wrote:
>>> Hi Nix,
>>> 
>>> It's almost certainly a power issue as power draw for the lan card will not
>>> be a static thing - ie will increase when transmitting packets vs idle.
>>> 
>> That's an intersting theory. I also run an external nic in the PCI
>> slot of a Net5501-60. In my case the OS is OpenBSD 5.5 and the nic
>> card is an Intel dual Gigabit PCI-X unit. I also experience reboots of
>> this configuration under high packet flows. In my case though my
>> machine is in the Net5501 rack mount case with the 5.0A power supply.
>> 
>> I will arrange to test by swapping to a newer 5501 rack mount case and
>> retesting.
>> 
>> Thanks
>> 
>> -- Chris
> 



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