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List:       nanog
Subject:    Re: NOAA Space Weather Prediction Center issued a Severe (G4) Geomagnetic Storm Watch
From:       "Jay R. Ashworth" <jra () baylink ! com>
Date:       2024-05-10 21:11:19
Message-ID: 177271648.34717.1715375479472.JavaMail.zimbra () baylink ! com
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How odd.

Both clocks are stratum 1?  Were the associated servers chiming off other servers
as well?

Cheers,
-- jra

----- Original Message -----
> From: "Mel Beckman" <mel@beckman.org>
> To: "John Curran" <jcurran@arin.net>, "NANOG" <nanog@nanog.org>
> Sent: Friday, May 10, 2024 4:29:13 PM
> Subject: Re: NOAA Space Weather Prediction Center issued a Severe (G4) Geomagnetic Storm Watch

> We just had two TM1000 TimeMachine brand GPS NTP servers lose clock sync at the
> same time, in two different cities (LA and Santa Barbara). The  outage lasted
> about five minutes, during which the NTP servers were responding, but with time
> that was 1900 seconds out of sync. The devices showed satellite lock on 8 birds
> (not all the same ones). I've never seen this behavior before with years of NTP
> clock experience.
> 
> It could be that these inexpensive NTP servers aren't very selective about bogus
> inputs, as I would have expected them to lose synch in the event of a GPS
> signal failure. Instead they produced garbage. Our PRTG NTP monitor logged the
> problem this way:
> 
>      
> Sensor SNTP (SNTP) ***
> Device      10.2.10.90-TimeMachine NTP server (10.2.10.90)
> New Status at 5/10/2024 12:49:52 PM (Pacific Standard Time):
> Down
> Last Message:
> The target server did not return a valid time. To resolve this issue, use a
> packet analyzing tool and do a trace of the NTP packets to check if all fields
> are correctly populated. (code: PE085)
> 
> ________________________________
> From: NANOG <nanog-bounces+mel=beckman.org@nanog.org> on behalf of John Curran
> <jcurran@arin.net>
> Sent: Friday, May 10, 2024 10:54 AM
> To: NANOG <nanog@nanog.org>
> Subject: NOAA Space Weather Prediction Center issued a Severe (G4) Geomagnetic
> Storm Watch
> 
> 
> <https://www.swpc.noaa.gov/news/swpc-issues-its-first-g4-watch-2005>
> SWPC Issues Its First G4 Watch Since 2005 | NOAA / NWS Space Weather Prediction
> Center<https://www.swpc.noaa.gov/news/swpc-issues-its-first-g4-watch-2005>
> swpc.noaa.gov<https://www.swpc.noaa.gov/news/swpc-issues-its-first-g4-watch-2005>
> [favicon.ico]<https://www.swpc.noaa.gov/news/swpc-issues-its-first-g4-watch-2005>
> 
> "Multiple CMEs erupted associated with flare activity from Region 3664 on 07-09
> May. These CMEs are expected to merge with potential arrival expected by early
> May 11 on the UTC day."
> 
> (Low but distinct possibility of effects to radio and transmission systems)
> 
> FYI,
> /John
> 
> John Curran
> President and CEO
> American Registry for Internet Numbers

-- 
Jay R. Ashworth                  Baylink                       jra@baylink.com
Designer                     The Things I Think                       RFC 2100
Ashworth & Associates       http://www.bcp38.info          2000 Land Rover DII
St Petersburg FL USA      BCP38: Ask For It By Name!           +1 727 647 1274
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