00`
2036 Feb 07 Thu 06:28:16+ JD 2464730.769630 MJD 64730.269630 ToD 23295
NTP 4294967296 Unix 2085978496 TAI-UTC 37 TAI-GPS 19 GPS-UTC 18
GPS We 2926 Cy 2 Wn 878 Wa 110 ToW 368914 DoW 4 ToD 23314
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On 2017-05-18 13:32, Paul wrote:
> On Thu, May 18, 2017 at 3:06 PM, Brian Inglis wrote:
>
> A lot of these types of boxes appear to be some type of SoC board
> with some GPS module, some Linux distro, some NTP release, probably
> GPSd, and with little in the way of docs, specs
ys with lots of settings; compare and contrast to Lady Heather:
displays only an engineer, physicist, or time-nut could appreciate.
For non-personal, production use, something with better docs, specs,
guarantees, support, maintenance, and provenance, with a wide temp
range, low delays and jitter, so
university servers as my last chance backups, if
backbone carriers or interconnects go down, as Qwest did a few
years ago, letting or getting HE into the dotCA IXP scene.
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ring, and math
used. If you don't know the impact, and the other parameters you need to
adjust to keep the control loop stable, any changes are likely to make
operation unstable.
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nd allow them to run at stratum 1, or equivalent
services and appliances in other countries.
The datacentre should have designed in and set up this kind of stuff
as a facility service.
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alking about the refid. I’m concerned
> that the leftmost field, “remote”, that holds the name or IP address
> of the server/peer, is too short for a full IPv6 address, or for a
> full DNS name.
As I posted earlier, use ntpq -w -p or similar.
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es at
default maxpoll 10/1024s, when it could take ~136min to become
unreachable.
For more details see:
https://www.eecis.udel.edu/~mills/ntp/html/prefer.html#clockhop
and linked/related pages.
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142.3.100.2 2 u7 64 377 29.483 -2.648
0.595
[Sorry if my email client, yours, or the list, wraps the output]
If you would like support for wider output without wrapping,
please submit an ntpq enhancement request for e.g. -W /n/ to
bugzilla, and opt
ntp.conf statements which remove all restrictions to the localhost
and management subnets, and ensure that nessus is not being run
from within your management or monitoring subnets, as you have to
have some way to manage, monitor, log, and generate alerts about,
NTP servers.
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On 2017-03-25 22:57, Brian Inglis wrote:
> On 2017-03-25 16:09, Dan Gearty wrote:
>> I have been using the loopback driver on Windows 10.
>> It had been running OK in older versions up to 4.2.8p9.
>> Now in 4.2.8p10 it appears that junk characters are appended to the
>
Environment
PPSAPI_DLLSREG_SZC:\Program Files
(x86)\NTP\bin\loopback-ppsapi-provider.dll
End of search: 1 match(es) found.
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.
http://doc.ntp.org/4.2.6p5/ntpdc.html documents monlist but not
its output. It's been disabled in newer releases and deconfigured
in older releases since the DDoS attacks using it against
misconfigured public servers. So I can't easily try it and it may
.2.6p5/monopt.html
http://doc.ntp.org/4.2.6p5/ntpq.html
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list see:
http://doc.ntp.org/current-stable/miscopt.html#mru
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omit the numeric prefix
e.g. {LOC.,}pool.ntp.org and you get a pool of server addresses.
For all pools numeric prefix 2.{*.,}pool.ntp.org should get you IP V6
addresses, but I don't know what happens if there are none in that
country or region: may be aliased to the next more global
://security.googleblog.com/2017/02/announcing-first-sha1-collision.html
https://www.cwi.nl/news
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e driver in the
distribution, depending on personnel availability and other project
priorities.
To see where the development and maintenance effort is going nowadays:
look at the Network Time Foundation (.org) project pages, RFCs and
Internet Drafts being submitted, and security fixes about every six
months, as that is the normal embargo period before public disclosure.
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-c mrulist 2> /dev/null | awk '$8 == "123" && $1 <= 86400'
which you can easily expand on to do stats, or pass to a plot package.
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s powered off, after
days of continuous running to stabilize.
Excessive vibrations could cause the limit to be exceeded at
any time, as crystals are piezo transducers.
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) from my local dealer who also ships world wide from LV, NV:
http://www.gpscity.com/garmin-gps-18x-high-sensitivity-lvc.html
http://www.gpscity.ca/garmin-gps-18x-high-sensitivity-lvc.html
I run both of the above and average offset is low us with offset
spiking up to about +/-50us, probably temperature swings.
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ils about configuring and running NTP servers
on various platforms and interfaces, and about building the
software.
For the definitive reference docs for each release see
http://doc.ntp.org/
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op of your config, to ensure anything not allowed is denied.
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Network Time Foundation article on leap second handling using smearing:
http://nwtime.org/leap-second-leap-smearing/
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storage especially over long periods
of non-use.
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ing an accurate hardware
counter like x64 constant/invariant TSC.
There's nothing like that available for Adafruit/GlobalTop MKT-3339.
The discussion below may be helpful to the OP:
http://lists.ntp.org/pipermail/questions/2013-September/036165.html
as may:
http:/
tter by three or four orders of
magnitude.
My logarithmic human rating scale for servers by offset MSD goes
(units ms as from ntpq; ntpd resets by stepping time if offset > 128ms):
128 100101.1 .01.001ms
unsynced available poor fair good g
;> 19 SHA1 7012d6aab691f53a415330d6b8ed648c8c0e867f # SHA1 key
>> MD5 is working only problem is with SHA1.
> This is on windows 7.
Try Meinberg 4.2.8p5 (optionally have it install files only):
https://www.meinbergglobal.com/download/ntp/windows/ntp-4.2.8p5-win32-setup.exe
especially if y
f us use it between our GPS enabled home systems on the LAN,
and others use it between their campus and lab systems with ref clocks.
It's cheaper and easier than TWSTFT when you're not a national lab
providing UTC with access to sat channels. ;^>
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sec=20170101,
expire=20170628
associd=0 status=00f2 15 events, clk_bad_format,
device="NMEA GPS Clock",
timecode="$GPRMC,210521.000,A,5108.3564,N,11411.5671,W,0.62,342.03,230117,,,D*71",
poll=64009, noreply=0, badformat=30, baddata=
ces can really tell us which of the possible alternatives
for these options are correct:
https://github.com/ntp-project/ntp
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scale!
It's your own local undiscplined reference time, with random variations
in time periods due to your servers' low quality hardware clocks.
Orphan mode should really only be set up for use as a backup when no
reference or network sources
On 2017-01-19 21:47, Charles wrote:
> On 20/01/17 05:33, questions-requ...@lists.ntp.org wrote:
>> Date: Thu, 19 Jan 2017 16:12:28 -0700 From: Brian Inglis
>> To: questions@lists.ntp.org Subject:
>> Re: [ntp:questions] NTP reply packets unreliable or rare Message-ID:
>&g
in your network.
You need conf statement
restrict192.168.0.0 mask 255.255.0.0
perhaps with some qualifications later, to allow inbound NTP from your
local net and on your NTP host firewalls and network routers filter
rules to allow port 123 in/out.
Most filters allow most traffic ou
an.pool.ntp.org has IPv6 address 2620:10a:800f::12
2.debian.pool.ntp.org has IPv6 address 2607:4100:2:ff::2
What you need is support for -4 and -6 on source conf statements.
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ing for sources, using
host DNSNAME
to see if they are accessible on an IP V6 address, and
ntpdate -6qup1 IP6ADDR
to check if they respond to you: add -d for server details.
If none work, your firewall, stack, or network hardware
may need bypasses or not support IP V6.
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The Resilient Navigation and Timing Foundation is NTF’s Newest Member!
http://nwtime.org/rnt-foundation-joins-ntf/
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19 is reserved for *NNTP* Usenet Network News Transfer Protocol,
and typically uses TCP, instead of UDP used by NTP!
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On 2017-01-02 05:40, Miroslav Lichvar wrote:
> On Sat, Dec 31, 2016 at 01:09:46AM -0700, Brian Inglis wrote:
>> On 2016-12-30 16:32, Ask Bjørn Hansen wrote:
>>>>> restrict 127.0.0.1
>>>>> restrict -6 ::1
>>>>>
>>>>> pool 0
On 2017-01-02 08:17, Charles Elliott wrote:
> On Sunday, January 1, 2017 1:19 PM, Brian Inglis wrote:
>> And only use minpoll and/or maxpoll on local ref clocks.
>
> Have you ever watched NTPD output when the polling interval reaches
> 10 (= 1024 seconds) or higher? NTPD
On 2016-12-31 01:09, Brian Inglis wrote:
> On 2016-12-30 16:32, Ask Bjørn Hansen wrote:
>> On Tuesday, September 6, 2016 at 1:41:10 AM UTC-7, Miroslav Lichvar wrote:
>>> On 2016-09-05, a...@ntppool.org wrote:
>>>> My draft has the following as the recommendation f
t - YMMV) see http://doc.ntp.org/current-stable/select.html .
>> Also, how about adding the iburst option? Considering that a
>> significant part of NTP traffic is from ntpdate (which sends four
>> packets in 2s interval) and that most Linux distributions seem to
>> use iburst
On 2016-12-02 06:55, Brian Inglis wrote:
> On 2016-12-01 23:48, Harlan Stenn wrote:
>> Paul writes:
>>> [conflicting types for 'EVP_MD_CTX']
>>> I've been able to build every version for some time but I can't
>>> build 4.2.8.p9/ARM/Ubuntu 1
ra (<< 1.8)
Depends: adduser, lsb-base (>= 3.2-13), netbase, libc6 (>= 2.17), libcap2 (>=
1:2.10), libedit2 (>= 2.11-20080614), libopts25 (>= 1:5.18.12), libssl1.1 (>=
1.1.0)
Pre-Depends: dpkg (>= 1.15.7.2)
Recommends: perl:any
http://www.infoworld.com/article/3144546/security/time-is-running-out-for-ntp.html
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phones this AM also and have
>> been scrambling to figure it out as they said nothing on our
>> NONPROFIT page NOR DID WE RECEIVE E-mails ABOUT IT. LUCKILY, we
>> did the Facebook for nonprofits registration for NTF weeks ago to
>> make this possible!
>
the timing error should become obvious.
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/dev/gps0 interrupts to kernel pps and use
that, as it says the system must support kernel pps.
Use ntpshmmon to check SHM contents.
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On 2016-11-23 03:28, Martin Burnicki wrote:
Brian Inglis wrote:
On 2016-11-22 09:06, Martin Burnicki wrote:
An updated GUI installer for ntp-4.2.8p9 for Windows is now
available at
https://www.meinbergglobal.com/english/sw/ntp.htm#ntp_stable
Does this release also include loopback-ppsapi
mailing list.
Most releases are for security nowadays, no major bugs, and there
is an RSS feed for releases, but there should be something on the
announce list and here.
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, and links: see earlier in list or group.
Harlan et. al. are concentrating on vulnerabilities, bugs, releases,
and support infrastructure, not chat.
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) must be
specified in the PPSAPI_DLLS *SYSTEM* environment variable,
on recent Windows releases.
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) must be
specified in the PPSAPI_DLLS *SYSTEM* environment variable,
on recent Windows releases.
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ks - disable it
with update-rc.d or systemd.
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nd that leap-seconds.list is a symlink to the actual
leap file leap-seconds.3676752000 currently, which can usually be downloaded
from:
https://hpiers.obspm.fr/iers/bul/bulc/ntp/
for authentication and security, or:
ftp://hpiers.obspm.fr/iers/bul/bulc/ntp/
as backup, which provides a remot
ce has been up 15-20 minutes.
Post the results if you need more help.
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gs of PC OSes.
I should move the governor and frequency setting into a separate startup
script: perhaps when I have to move everything to systemd, after some
more experience working with it.
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.
.
.
```
# get last processor
get_las
to the
owning group of this device if no GPS device was specified on the
command line does not exist." [sic]
Do you see anything relevant from dmesg that could be causing
gpsd to do it's own setup?
See also:
/usr/share/doc/gpsd/TROUBLESHOOTING.gz
and
http://www.catb.org/g
interest.
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On 2016-11-03 19:27, Paul wrote:
On Thu, Nov 3, 2016 at 2:27 PM, Brian Inglis wrote:
What do your refclock ntp.conf lines look like?
I'm not sure why you're asking but:
For the reference and edification of the OP.
# PPS (ATOM)
server 127.127.22.0 minpoll 3
fudge 127.127.22.0
On 2016-11-03 08:45, ogre up wrote:
On Thu, Nov 3, 2016 at 3:03 PM, Brian Inglis wrote:
On 2016-11-02 17:51, Paul wrote:
On Sun, Oct 30, 2016 at 1:29 PM, ogre up wrote:
Hello everyone, I've setup a NMEA+PPS ntp server, but both ref clock have
strange offset value reported by ntpq -p.
e setup in uBlox mode at higher speed, especially if
you load ALP data from Ublox, before switching to 9600 bps and NMEA output.
Once the setup is done properly, it would be worth comparing the performance
using the NMEA driver with kernel PPS against the separate PPS/ATOM driver.
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ith kernel PPS to achieve accuracy and
reliability: PPS was added to the driver to improve handling using the
same port, because results using the separate PPS driver were worse.
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On 2016-10-31 20:46, ogre up wrote:
Brian, thanks for your quick response.
On Tue, Nov 1, 2016 at 4:03 AM, Brian Inglis mailto:brian.ing...@systematicsw.ab.ca>> wrote:
Presuming a Garmin 18LVC wired to power and a serial port as you have PPS,
you get better results using the bu
es via interactive
Garmin Windows programs, info on this is sparse, although widely supported
and documented for all other commercial, and even many cheap Asian modules.
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and can have a GPS
board added for more accuracy.
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on of the service: adjusting these should
constitute part of a research project into controls.
If you change one or more of these, something breaks, and you ask about it,
you will most likely be told: don't do that!
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maximum error
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last server sync was?
Remove all inaccessible internet servers as they will make it impossible
for the systems to sync; define each system to the other; then see docs
about setting up Orphan Mode:
http://doc.ntp.org/cgi-bin/htsearch?method=and&sort=score&restrict=4.2.6p5&words=orpha
/WebHome(Current Versions of
NTP sidebar)
http://support.ntp.org/bin/view/Main/SoftwareDownloads (and download links)
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http
On 2016-04-05 14:26, Frank Wayne wrote:
On 2016-04-03 19:32, Frank Wayne wrote:
From: questions on behalf of Brian Inglis
Sent: Tuesday, April 05, 2016 01:48
To: questions@lists.ntp.org
Subject: Re: [ntp:questions] Clarification ofprotostats decoding
0 1548.008 GPS_NMEA(4) 802b 8b clock_event clk_no_reply
57470 1555.832 216.228.192.69 903a 8a sys_peer
57470 1555.832 0.0.0.0 c61c 0c clock_step +3.424864 s
57470 1562.008 0.0.0.0 c614 04 freq_mode
57470 1562.008 0.0.0.0 c618 08 no_sys_peer
57470 1567.207 GPS_NMEA(4) 904a 8a sys_peer
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On 2016-03-27 15:49, Geoff Down wrote:
On Mon, Jan 18, 2016, at 04:47 PM, Brian Inglis wrote:
On 2016-01-18 03:07, Geoff Down wrote:
On Mon, Jan 18, 2016, at 01:54 AM, Brian Inglis wrote:
On Fri, Jan 15, 2016 at 7:54 AM, Geoff Down
wrote:
(using the default config from Macports, so no
e Lord'
https://laughingsquid.com/an-interview-with-dr-judah-levine-americas-real-life-time-lord/
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http
If you have Windows/Linux on Intel/AMD mobos, try OpenHardwareMonitor on
Windows with .NET 2+ and Linux with Mono and Winforms:
http://openhardwaremonitor.org/documentation/ and
https://github.com/openhardwaremonitor/openhardwaremonitor.git
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mind.
To amplify: would you suggest that the spec in that case should be FreeBSD on a
Soekris or similar with an HP primary or secondary reference clock or similar?
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ques
aneous peerstats for
remote sources.
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On 2016-02-16 19:28, Paul wrote:
On Tue, Feb 16, 2016 at 7:40 PM, Brian Inglis mailto:brian.ing...@systematicsw.ab.ca>> wrote:
This module specs don't mention frequency output other than 1PPS which is
specced within 60ns, so much better than almost all. If it also supports
ght have better reps.
This module specs don't mention frequency output other than 1PPS which is
specced within 60ns, so much better than almost all. If it also supports TRAIM
and sawtooth correction, the driver can improve on that.
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from
your receiver to gpsd for the transmission medium, and are always sending the
same messages after every PPS, preferably only the timing basics.
Having a bunch of GPS almanac or other irregularly available data dumped every
so often will adversely impact timekeeping!
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able from man 5 ntp.conf, info ntp.conf 'ntp.conf Notes', and
/usr/share/doc/ntp-doc/html/comdex.html or some similar path on your distro.
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ce power management policy.
I have so far resisted becoming a time nut with Rb and Cs clocks requiring use
of a soldering iron.
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onstant_tsc...nonstop_tsc)
regardless of the CPU power management state. Some BIOSes/OSes/clock
drivers can sync the TSC values across cores on the same socket at
startup, and may set up machine status registers (TSC AUX MSRs)
with identifiers or offsets per CPU, readable u
On 2016-01-18 03:07, Geoff Down wrote:
On Mon, Jan 18, 2016, at 01:54 AM, Brian Inglis wrote:
On Fri, Jan 15, 2016 at 7:54 AM, Geoff Down
wrote:
(using the default config from Macports, so no minpoll set).
On 2016-01-16 17:39, Geoff Down wrote:
Thanks both, its a PowerMac PPC (so not
from ntpq), even if you disable all power saving.
Run ntpq -p -c rv and see how stable those servers and numbers are over time.
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or can you disable any power management features?
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On 2016-01-13 20:10, Brian Inglis wrote:
On 2016-01-13 14:30, brian utterback wrote:
I am sure this has been asked before but I can't find the answer. On a
multihomed system, is there anyway to specify which interfaces you want
multicastclient to listen on? If so, how. If not, why not? I
nfopt.html#multicastclient
Address options:
https://en.wikipedia.org/wiki/Multicast_address
https://tools.ietf.org/html/rfc2365
http://tools.ietf.org/html/rfc5771
http://www.iana.org/assignments/multicast-addresses/multicast-addresses.xhtml
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rectly using
symlinks /dev/gps# /dev/gpspps#, driver 22 PPS using /dev/pps#,
and ntpd driver 46 GPSD-NG if you can run a recent ntpd and gpsd.
The PPS device provides accurate seconds ticks, the message per second
(preferred)device provides only
want consistent, correct system time but do not need lab
quality timing.
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t too hard to use say 0x200 as process GPGBS
message mode flag, and copy/paste/modify relevant sections from existing
message processing, with any unique additions that GPGBS message data
requires.
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jitter on Windows,
and I replace remote sources with offsets much over 10ms!
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you can get it set up to behave like an Oncore-like device, you may be able
to use the Oncore driver.
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2 appears to have lost its
ref clock or server, so is now showing as stratum 16, when > poll,
poll bumped from usual 64 to 128, reach is zero, stats are frozen,
not yet reduced to zero.
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Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada
On 2015-12-12 08:29, brian utterback wrote:
Perhap
ore than
one going down at the same time, increasing the number n (above) of
simultaneous falsetickers your configuration must be able to handle.
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Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada
On 2015-12-09 22:20, Tiwari, Dilip (Nokia - IN/Bangalore) wrote:
Hi shyam,
First of all
o use -s and -M # to slew
and/or step.
The old program was Nick McLaren's stand alone sntp, the new one uses NTP code.
Compare old http://doc.ntp.org/4.2.6p5/sntp.html and new
https://www.eecis.udel.edu/~mills/ntp/html/sntp.html docs.
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http://www.itu.int/net/pressoffice/press_releases/2015/53.aspx
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://support.ntp.org to
http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities
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