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List: fedora-list
Subject: Re: OT: Ways to figure what causing High Ping Loss that require power cycling cable modem??
From: "Michael D. Setzer II via users" <users () lists ! fedoraproject ! org>
Date: 2023-07-09 21:29:44
Message-ID: 64AB26C8.17718.9221671 () mikes ! guam ! net
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On 9 Jul 2023 at 17:00, Roger Heflin wrote:
From: Roger Heflin <rogerheflin@gmail.com>
Date sent: Sun, 9 Jul 2023 17:00:55 -0400
Subject: Re: OT: Ways to figure what causing High Ping Loss that require power
cycling cable modem??
To: "Michael D. Setzer II" <mikes@guam.net>,
Community support for Fedora users <users@lists.fedoraproject.org>
Send reply to: Community support for Fedora users <users@lists.fedoraproject.org>
>
> 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.
>
The web page that shows up with 192.168.100.1 doesn't let me
change anything other then option to reset counters. Has an
advanced option, but it has an advanced tab, but prompts for
password of day.
Have another script that gets status page from modem every 15
minutes and it reports high changes on uncorrectable errors
between checks. Strange thing is that seems to be similar patterns
both when working and not working.
605 ALL 100.00%
43 "=0 7.11%
0 "1-100 0.00%
0 '101-500 0.00%
0 "501-1000 0.00%
0 "1001-2500 0.00%
0 "2501-5000 0.00%
112 "5001-10000 18.51%
448 "10001-20000 74.05%
1 ">20000 0.17%
1 "<0 0.17%
Max 23128
(Actual max 30833, reset >30000 to -1000 to keep graph from
scalling to high)
Modem shows valid ranger from 15 to -15
-2.1 Max Power
-14.6 Min Power
8.9 Max Diff
7.3 Min Diff
8.10 Avg Diff
156:23:59 running time of checks
Modem has 32 downstream channels.
Thanks for info.
> On Sun, Jul 9, 2023, 7:50 AM Michael D. Setzer II via users
> <users@lists.fedoraproject.org> 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:mikes@guam.net
> mailto:msetzerii@gmail.com
> Guam - Where America's Day Begins
> G4L Disk Imaging Project maintainer
> http://sourceforge.net/projects/g4l/
> +------------------------------------------------------------+
>
>
>
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+------------------------------------------------------------+
Michael D. Setzer II - Computer Science Instructor (Retired)
mailto:mikes@guam.net
mailto:msetzerii@gmail.com
Guam - Where America's Day Begins
G4L Disk Imaging Project maintainer
http://sourceforge.net/projects/g4l/
+------------------------------------------------------------+
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