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Draytek Vigor 2820 random reboots

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20 Jul 2017 20:34 #89279 by mbames
Draytek Vigor 2820 random reboots was created by mbames
Got a 2820 installed at my parents for a year or two, and I've noticed that it randomly reboots. Currently powered via APC UPS, this evening I even swapped the PSU for a spare Draytek one I had at my house, and about an hour later it performed a random reboot :-(

Google suggested running the command sys ver dbg, as that is meant to report the last operation before it crashed. Current firmware version: 3.3.7.9_211801, which I believe is the latest long line firmware.

Code:
somerset> sys ver dbg sys ver dbg Router Model: Vigor2820n Version: 3.3.7.9_211801 English Profile version: 3.0.0 Status: 1 (0x495623c4) Router IP: 192.168.102.254 Netmask: 255.255.255.0 Firmware Build Date/Time: Dec 6 2016 18:55:02 Router Name: somerset Revision: 61059 drayos2009_v2820_3379 ADSL Firmware Version: 211801_A Annex A ---------firmware exception debug info----------------------------- EPC=80009f1c, Cause=81433ccc, Status=1000fe03, BadAddr=00000000, RetAddr=80273118 exception id=19(Reserved) exception occured in IdleTask Timeout, task_id=141, SP=0x808be680(10844 bytes free, 1444 used bytes) system tick =708109 CURRENT_VERSION : 3.3.7.9_R get from address : 80004000 Dump CPU registers: ----------------------------------------- $ 0: 00000000 81430294 808be71f ffffffff $ 4: 808be714 00000000 00000003 00000000 $ 8: 00000004 00000001 808be4b4 80a3fed6 $12: 808bdad0 ffffffff 80a3fed2 14e6af71 $16: 00000001 ffffffff 00000000 8142b4fc $20: 81432c78 814348fc 0000000d 808be714 $24: 61303030 27d1c8a2 00000000 00000000 $28: 00000000 808be680 808be724 80273118 List a possible caller functions: ---------------------------------- func( 0)=80273118 func( 1)=80009f1c List backtrace functions: ---------------------------------- func( 0)=80009f1c func( 1)=814348fc


Line status (nothing impressive here!)
Code:
somerset> adsl status adsl status --------------------------- ATU-R Info (hw: annex A, f/w: annex A) ----------- Running Mode : G.DMT State : SHOWTIME DS Actual Rate : 1504000 bps US Actual Rate : 448000 bps DS Attainable Rate : 1888000 bps US Attainable Rate : 692000 bps DS Path Mode : Interleave US Path Mode : Interleave DS Interleave Depth : 4 US Interleave Depth : 2 NE Current Attenuation : 64 dB Cur SNR Margin : 11 dB DS actual PSD : 17. 6 dB US actual PSD : 11. 9 dB ADSL Firmware Version : 211801_A -------------------------------- ATU-C Info --------------------------------- Far Current Attenuation : 31 dB Far SNR Margin : 11 dB CO ITU Version[0] : 0000414c CO ITU Version[1] : 00004342 DSLAM CHIPSET VENDOR : < ALA >


Normally it just has a laptop or two via wifi connected and 1 PC (via devolo ethernet over mains kit). Any ideas what I can try next?

Thanks,
Matt

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21 Jul 2017 17:52 #89283 by mbames
Replied by mbames on topic Re: Draytek Vigor 2820 random reboots
Just a thought, WAN2 was configured, but with nothing plugged in - enabled it a while ago to aid the switch between ISPs and used a spare Vigor 120 modem in it.

I've now disabled WAN2.

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