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Draytek Vigor 2820 random reboots

mbames
Topic Author
User

20 Jul 2017 20:34 #1 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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mbames
Topic Author
User

21 Jul 2017 17:52 #2 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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