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XG 135 random reboots



I have a XG 135 running SFOS 17.5.8 MR-8 and it has very recently started to randomly auto reboot during the day. It has happened twice now on two separate occasions.

All I can see in the logs is that the device has started, and no reason given for the sudden reboot, and all statistics eg under Firewall Rules have reset to zero?

Anyone else experiencing this?


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  • This issue could be caused by an Bug, which should be resolved by changing the Hardware. 

    Maybe check: 

    console> system auto-reboot-on-stall show
    Auto reboot system on CPU stall is disabled

    This would lead to at least the hardware will reboot in case of freezing.  


  • Lucar,

    what do you mean "by a bug"?

    SW bug? So everyone that has this model, it is affected?

    Are you sure about that?

  • I am not involved in the Bug follow up process, but i knew some customers with such an issue. They replaced their hardware and the issue was gone. 

    So i am not quite sure, what was going on there but i assume, its somehow a kernel panic. 

    But compared to the numbers of installations, i monitor (partners and customers), this is a small numbers of issues. 


  • That's Sophos supports job! =)


    It's brand new hardware implemented 3 months ago. Everything from the web console under diagnostics looks good. I swapped out the box Saturday, so we will see if the replacement 430 works better.

  • Hello Louis,

    what HW revision is your XG135? If it's rev.2 (see to the label on the bottom of the appliance) it is most likely a defective Intel Atom CPU. It is a known problem of the Atom CPU series. If your HW appliance is supported by Sophos ( you have support contract or valid license ), ask only Sophos to replace the HW appliance. 



  • So support logged in to my XG and the response I got was:

    "I have checked logs using access id but there is no specific information available to get reason of reboot.

    Also after Oct 9, device is up and running fine"

    So my XG 135 has done this now at least once a week for the previous two weeks... This is now week 3 and I am waiting to see if it happens again

  • I just had the issue happen again with the replacement 430. Same symptoms. Traffic stopped, the hard drive activity light on the front panel was solid, and the front panel lcd would not respond. The port activity lights were blinking as if traffic was passing. I had to hard power the unit to get our network back up. This is becoming very annoying. We will see what support says this time.

  • I've had similar problems with a software Appliance last month.

    After reinstallation with iso image, everything is working fine now, no freezes or restarts!


    Sophos XG User

  • I am sorry but this is not a option for me  and my XG 135 and neither do I think it is for JBO and his XG 430