I have had a cable modem break from me turning on extra logging and or
statistics that apparently worked badly.  Turn off any extras you turned
on.  Mine was also having random issues from a zwave transmitter tnat was
really close.  The zwave caused errors on 2 of the many different
frequencies on the cable that told me it was not a physical wiring issue
but something else.  I found those stats in one of the cable modems pages.
Moving the device a few feet away resolved thay.

On Sun, Jul 9, 2023, 7:50 AM Michael D. Setzer II via users <
[email protected]> wrote:

> Island got hit with a Typhoon Cat 3/Cat 4 that caused lots of
> damage to all internet providers. Power at house was out for a
> week. They are still working on lots of issues.
>
> Can figure when issue happens, and power cycle on cable modem
> fixes it. Wonder if there might be some process to find way to
> prevent it from happening or way to have script software reset
> modem. Years ago had way to reboot Surfboard modem, but now
> ISP using Arriss cable modems. Web access has no reboot option?
> Thanks.
>
>
> Usually would only need to reboot cable modem about once a
> month, but over last 6 days, have required reboots average of 7.5
> times a day? 45 total. Similar patterns for prior weeks.
>
> Have script that does 50 pings to local name server, and most of
> time is 0, with some values from 1% to 10%, but often jumps to
> high rates over 80% to 100%. At which point the internet is
> useless. All lights on modem are fine, TV, phone, and 4 Linux
> machines all will report no internet. Traceroute to 8.8.8.8 still
> works, but when no loss takes total of 1.3 seconds
>
> While getting high loss using -n the time goes to 5.6 seconds, and
> without -n takes 2 minutes 13 seconds?
> Hops change of three test changes from 10, 14, and 13.
>
> Summary of time.
> Up Time         Hours           Days
> 129:29:28               129.4911                5.40    90.76%
> Down Time       Hours           Days
> 13:15:54                13.2650         0.55    9.24%
>
> Script plays sound when ping rate over 10%, and reset brings
> everything back to normal. But for how long before it returns has
> no pattern that I can find. On some cases if not around to power
> cycle it, it will start working again, but rare. Usually, only power
> cycle fixes it.
>
> ARRIS DOCSIS 3.1 / PacketCable 1.5 Touchstone Telephony
> Modem
> HW_REV: 8
> VENDOR: ARRIS Group, Inc.
> BOOTR: 2.2.23.635901
> SW_REV: 11.02.032.09.03.NCS
> MODEL: TM3402A
>
> Haven't found a way to send software reboot to modem, so only
> physical power cycle works. Seems company was bought by
> another and info from web site has been useless.
>
> Looked at netstat and nstat info before and after outages, but don't
> see anything from the linux side that shows what issue is.
>
> Get the 50+M speedtest results when working.
> Example of a cycle.
> Time and percentage of ping loss
> 2023-07-09 06:27:00     88
> 2023-07-09 06:30:00     76
> 2023-07-09 06:33:00     84
> 2023-07-09 06:36:00     84
> 2023-07-09 06:39:00     82
> 2023-07-09 06:42:00     78
> 2023-07-09 06:44:00     78
> 2023-07-09 06:47:00     84
> 2023-07-09 06:50:00     90
> 2023-07-09 06:53:00     82
> 2023-07-09 06:56:00     82
> 2023-07-09 06:59:00     92
> 2023-07-09 07:01:00     72
> 2023-07-09 07:04:00     82
> 2023-07-09 07:07:00     82
> 2023-07-09 07:10:00     80
> Power Cycle modem makes access to 192.168.100.1 fail till about
> 3 to 4  minute reboot time.
> 2023-07-09 07:12:00     100     Cable Modem not accessible
> Reports when ping rate goes back to normal.
> 2023-07-09 07:16:00     0       UP
>
>
> +------------------------------------------------------------+
>  Michael D. Setzer II - Computer Science Instructor (Retired)
>  mailto:[email protected]
>  mailto:[email protected]
>  Guam - Where America's Day Begins
>  G4L Disk Imaging Project maintainer
>  http://sourceforge.net/projects/g4l/
> +------------------------------------------------------------+
>
>
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