Re: [ntp:questions] WARNING: someone's faking a leap second tonight

2012-08-01 Thread E-Mail Sent to this address will be added to the BlackLists
jclerm...@gmail.com wrote: Can someone explain why this was done? (Shrug) If they were pool clocks, anything is possible, occasionally the date appears to change on some of them. -- E-Mail Sent to this address blackl...@anitech-systems.com will be added to the BlackLists.

Re: [ntp:questions] SBC-ATT Time Servers

2012-08-01 Thread E-Mail Sent to this address will be added to the BlackLists
xsiu...@gmail.com wrote: att just doesn't have much of a clue, when it comes to Network Time. For a long time, it has appeared that they don't have clues, or don't care about lots of things. {Whats new?} for years, they had clocks running on NIS+ servers, mainly to keep time in sync on

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2012-08-01 Thread Trisha Banerjee
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Re: [ntp:questions] WARNING: someone's faking a leap second tonight

2012-08-01 Thread Marco Marongiu
On 01/08/12 04:40, jclerm...@gmail.com wrote: Yes, this affected us. Can someone explain why this was done? Was it designed to be a test of some kind? The Linux leap second kernel bug that was discovered a month ago was only patched on July 17; that patched kernel has presumably not made it

Re: [ntp:questions] NTP on local networks

2012-08-01 Thread Terje Mathisen
David Taylor wrote: I have information on my Web site on the easy-to-use Sure GPS, as well as the low-cost Garmin GPS 18x LVC. http://www.satsignal.eu/ntp/Sure-GPS.htm http://www.satsignal.eu/ntp/FreeBSD-GPS-PPS.htm Mine are using simple puck antennas, indoors, on the top floor of a

Re: [ntp:questions] NTP on local networks

2012-08-01 Thread David Taylor
On 01/08/2012 10:15, Terje Mathisen wrote: [] This summer I received two more SURE boards, it took about an hour total to solder on the two required patch wires on each of them. (I used David's pictures to remind me where to put the patch wires!) Together with a pair of old laptops (with

Re: [ntp:questions] NTP + PPS on Atom motherboards

2012-08-01 Thread David Taylor
On 01/08/2012 09:46, Hahn, Ron wrote: Colleagues, I have been working for some time now trying to get four different Asus Atom motherboards to successfully work as a NTP stratum 1 server. I am using the FreeBSD 8.3 OS with PPS compilation in the kernel, and the ntp-devel port (4.2.7p2??

Re: [ntp:questions] WARNING: someone's faking a leap second tonight

2012-08-01 Thread Marco Marongiu
On 01/08/12 10:28, Marco Marongiu wrote: I tried to collect some information around the globe, but with scarce/no feedback. I am *suspecting* that this could be a rather imaginative attempt to DOS worldwide. Anyway, a colleague of mine is now hunting down some upstreams that faked the leap

Re: [ntp:questions] NTP + PPS on Atom motherboards

2012-08-01 Thread Thomas Laus
On 2012-08-01, Hahn, Ron ron.h...@fmr.com wrote: Colleagues, I have used exactly the same recipe on a Core 2 Duo Tyan server and the times are maximally off by only +4uS/-2uS from PPS. So I am thinking there is something fundamental wrong with the Atom boards. I have repeated the

Re: [ntp:questions] WARNING: someone's faking a leap second tonight

2012-08-01 Thread Marco Marongiu
On 01/08/12 14:58, Marco Marongiu wrote: Question now is: assuming those servers were running ntpd, was such a bug reported at some point? Plus, another question. If one uses the leapfile, are spurious leap second notifications like this one discarded? From the docs at

Re: [ntp:questions] WARNING: someone's faking a leap second tonight

2012-08-01 Thread steven Sommars
I've seen no evidence of a denial of service attack, bugs are more likely. Several stratum one servers have been advertising LI=1 continuously for the past month. Others alternate between LI=0 and LI=1. Most servers claim to run ntpd. There are over 10 stratum one's that advertise LI=1 as of

Re: [ntp:questions] WARNING: someone's faking a leap second tonight

2012-08-01 Thread demonccc
Hi, I tried to find some info because there was other leap second, but I didn't find anything about this issue. Does somebody has some info what happened or know if it was a DOS atack or if it was a problem of the ntp services (I'm using the ntp Dabian pools)? Thanks in advance

Re: [ntp:questions] NTP on local networks

2012-08-01 Thread unruh
On 2012-08-01, Chris Albertson albertson.ch...@gmail.com wrote: On Tue, Jul 31, 2012 at 7:46 PM, Kennedy, Paul p.kenn...@fugro.com.auwrote: Exactly so. you can purchase a GPS receiver for well under $100 connect it to a serial port + pps on any of the pc's and have microsecond accuracy in a

Re: [ntp:questions] NTP on local networks

2012-08-01 Thread unruh
On 2012-08-01, Terje Mathisen terje.mathisen at tmsw.no wrote: David Taylor wrote: I have information on my Web site on the easy-to-use Sure GPS, as well as the low-cost Garmin GPS 18x LVC. http://www.satsignal.eu/ntp/Sure-GPS.htm http://www.satsignal.eu/ntp/FreeBSD-GPS-PPS.htm Mine

Re: [ntp:questions] NTP + PPS on Atom motherboards

2012-08-01 Thread Hahn, Ron
Tom, I am thinking, is the D510MO a single core or double core CPU? The Atom CPU I have been using are all double core. R -Original Message- From: questions-bounces+ron.hahn=fmr@lists.ntp.org [mailto:questions-bounces+ron.hahn=fmr@lists.ntp.org] On Behalf Of Thomas Laus

Re: [ntp:questions] NTP + PPS on Atom motherboards

2012-08-01 Thread Chris Albertson
All Serial ports are spec'd for RS232 voltage levels but many of then will still work on TTL levels.My guess (I'm guessing because you don't say) is that you are feeding the serial port a TTL level signal.The Core 2 Duo might be fine with this but perhaps the Atom board need real rs232 and

Re: [ntp:questions] WARNING: someone's faking a leap second tonight

2012-08-01 Thread Rob
steven Sommars stevesommars...@gmail.com wrote: I've seen no evidence of a denial of service attack, bugs are more likely. Several stratum one servers have been advertising LI=1 continuously for the past month. Others alternate between LI=0 and LI=1. Most servers claim to run ntpd. There

Re: [ntp:questions] NTP + PPS on Atom motherboards

2012-08-01 Thread Chris Albertson
On Wed, Aug 1, 2012 at 8:13 AM, Hahn, Ron ron.h...@fmr.com wrote: Tom, I am thinking, is the D510MO a single core or double core CPU? The Atom CPU I have been using are all double core. I use the same board. It is a dual core CPU. I got it because (1) has real serial ports and (2) it

Re: [ntp:questions] WARNING: someone's faking a leap second tonight

2012-08-01 Thread steven Sommars
The main standard says a leap second is allowed in any month. That's what the reference ntpd does. See ITU-R, TF460, STANDARD-FREQUENCY AND TIME-SIGNAL EMISSIONS. This link may work: http://www.itu.int/dms_pubrec/itu-r/rec/tf/R-REC-TF.460-6-200202-I!!PDF-E.pdf On the other hand Bulletin C

Re: [ntp:questions] NTP + PPS on Atom motherboards

2012-08-01 Thread Hahn, Ron
Chris, Thank you for these helpful advises. I am recalling many years ago there were such things as line transceivers that converted the signals from TTL-RS232 and backwards. Do these still exist in the world and have you perhaps these part numbers? I am thinking this is the only thing left

Re: [ntp:questions] WARNING: someone's faking a leap second tonight

2012-08-01 Thread demonccc
All, I found that: http://www.greyware.com/kb/kb2012.717.asp One of my internal NTP servers has the leap flag set to 01. The fake leap second issue was produced in the servers where this NTP server is the time source preferred, so I guess that it was my problem. In order to check the leap

Re: [ntp:questions] WARNING: someone's faking a leap second tonight

2012-08-01 Thread praritbhargava
There are over 10 stratum one's that advertise LI=1 as of Wed Aug 1 14:18:51 UTC 2012. Unless this changes another false leap second could occur on August 31, 2012 Steven, can you point me to one of those servers? The ones that I've checked all seem to have LI=0. Thanks! P.

Re: [ntp:questions] WARNING: someone's faking a leap second tonight

2012-08-01 Thread jclerman0
On Wednesday, August 1, 2012 7:33:25 AM UTC-7, steven Sommars wrote: I've seen no evidence of a denial of service attack, bugs are more likely.. Several stratum one servers have been advertising LI=1 continuously for the past month. Others alternate between LI=0 and LI=1. Most

Re: [ntp:questions] WARNING: someone's faking a leap second tonight

2012-08-01 Thread Martin Burnicki
Hi all, Marco Marongiu wrote: Hi all This is just to warn you that there are now some NTP servers around the globe spreading a leap second announcement for tomorrow 00:00:00 UTC (so, basically, in a few hours now). If you didn't take action before the leapocalypse last month, you better

Re: [ntp:questions] NTP + PPS on Atom motherboards

2012-08-01 Thread David Woolley
Hahn, Ron wrote: Thank you for these helpful advises. I am recalling many years ago there were such things as line transceivers that converted the signals from TTL-RS232 and backwards. Do these still exist in the world and have you perhaps these part numbers? I am thinking this is the only

Re: [ntp:questions] Facing some issue in the ntp version Ver. 4.2.6p1

2012-08-01 Thread Martin Burnicki
Sorry for jumping in so late. In my opinion the basic concept of the local clock driver was good, easy to configure, sufficient for small, simple networks, and it just worked as expected in older versions of ntpd. As David Woolley has pointed out in one of his comments, the local clock can

Re: [ntp:questions] NTP + PPS on Atom motherboards

2012-08-01 Thread unruh
If you can, get a high speed scope (10MHz) and put it on the end of the line and see what voltages are coming out of the line to the serial port. You might find it is only a volt or less which is not enough to drive the latches. On 2012-08-01, Hahn, Ron ron.h...@fmr.com wrote: Chris, Thank

Re: [ntp:questions] NTP + PPS on Atom motherboards

2012-08-01 Thread unruh
On 2012-08-01, Chris Albertson albertson.ch...@gmail.com wrote: All Serial ports are spec'd for RS232 voltage levels but many of then will still work on TTL levels.My guess (I'm guessing because you don't say) is that you are feeding the serial port a TTL level signal.The Core 2 Duo

Re: [ntp:questions] WARNING: someone's faking a leap second tonight

2012-08-01 Thread E-Mail Sent to this address will be added to the BlackLists
Martin Burnicki wrote: It turned out this happened with some older versions of ntpd when the customers had installed e.g. 3 or 4 servers for redundancy, and each NTP server had the other ones configured as upstream server (personally I know this is not a good configuration, but they did

Re: [ntp:questions] NTP + PPS on Atom motherboards

2012-08-01 Thread Thomas Laus
On 2012-08-01, Hahn, Ron ron.h...@fmr.com wrote: Chris, Thank you for these helpful advises. I am recalling many years ago there were such things as line transceivers that converted the signals from TTL-RS232 and backwards. Do these still exist in the world and have you perhaps these part

Re: [ntp:questions] Facing some issue in the ntp version Ver. 4.2.6p1

2012-08-01 Thread E-Mail Sent to this address will be added to the BlackLists
Martin Burnicki wrote: If in current versions of ntpd the local clock stays selected as system peer after the daemon has started even though good upstream time sources are available, or if it eats up the -g flag after startup so ntpd terminates itself when remote servers become available

Re: [ntp:questions] NTP + PPS on Atom motherboards

2012-08-01 Thread Thomas Laus
On 2012-08-01, Hahn, Ron ron.h...@fmr.com wrote: the PPS pulse width. Maybe with the Fat PPS board? This is reminding me of the old days. Printers and Terminals! :) Ron: All of my TAPR boards also drive the RS-232 PPS pin with a 'low-z' output. They use 4 sections in parallel from a 74AC04N

Re: [ntp:questions] WARNING: someone's faking a leap second tonight

2012-08-01 Thread Chris Adams
Once upon a time, Marco Marongiu brontoli...@gmail.com said: This is just to warn you that there are now some NTP servers around the globe spreading a leap second announcement for tomorrow 00:00:00 UTC (so, basically, in a few hours now). I'm still seeing leap=01 from 204.235.61.9