Re: [ntp:questions] Windows NTP setup problem.

2008-02-21 Thread David Woolley
Tualha Khan wrote: Now, the problem part. Under my test conditions, i have both servers configured as follows: I feel you are well out of your depth with this complexity of timing topology. #crypto pw abc123 #keysdir D:\Program Files (x86)\NTP\etc\keys server

Re: [ntp:questions] no ntp synchronisation: 2s to 6s time shift !

2008-02-21 Thread Thierry MARTIN
Hello Serge, You're right! I missed the -b option in ntpdate. That's very doable, but requires some amounts of efforts. ;-) I understand that. The system is a transportable system. It is used to mesure some transmission time over a network (packets contain utc timestamp themselves). It can

Re: [ntp:questions] no ntp synchronisation: 2s to 6s time shift !

2008-02-21 Thread Richard B. Gilbert
Thierry MARTIN wrote: Hello Serge, You're right! I missed the -b option in ntpdate. That's very doable, but requires some amounts of efforts. ;-) I understand that. The system is a transportable system. It is used to mesure some transmission time over a network (packets contain utc

Re: [ntp:questions] no ntp synchronisation: 2s to 6s time shift !

2008-02-21 Thread Thierry MARTIN
Hi Martin, It seems that once again, you're about to save me ;-) ! So, ok my system has a Meinberg gps170pci board. As far as I can remember, when GPS signal is not there, NTP does not use GPS refclock as a timesource. So i guess, you suggest that I use the DCF77 emulation or some other

Re: [ntp:questions] ntp polling interval-- difference between NTP3 and 4?

2008-02-21 Thread Danny Mayer
Unruh wrote: There seems to be a conflict between ntp 3 and ntp 4 in the handling of the polling interval if the server does not respond. In the rfc for ntp 3 it says that the polling interval decreases if the server does not respond, while ntp 4 rfc states A client SHOULD increase the

Re: [ntp:questions] Leap second functional question

2008-02-21 Thread Danny Mayer
David Woolley wrote: 4p4's ntpd/ntp_loopfilter.c: /* * Set the leap bits in the status word, but * only on the last day of June or December. */ tstamp =

Re: [ntp:questions] Leap second functional question

2008-02-21 Thread David Woolley
Danny Mayer wrote: } That comment is wrong. IIRC it can nominally be set at the last day of The comment matches the code, which should be the most recent released version. Someone has already said that it is a known bug, and I think they said it is fixed in the

Re: [ntp:questions] Leap second functional question

2008-02-21 Thread David L. Mills
Danny, That snapshot is older than I thought. That particular botch of code along with other botches was vulnerable to whimsical errors, like server leap bits popping up and down or leapsecond file update. The current code here can leap at the end of any month, which seems to be the

[ntp:questions] Issues with w32tm on AD network

2008-02-21 Thread Andrew Hodgson
Hi, I have had issues keeping accurate time on W32tm using an Active Directory based network with just Windows servers. I have a Linux workstation, and NTP on that workstation keeps loosing the time, and going to Stratum 16. Similarly, there are Cisco routers on the network, which also

Re: [ntp:questions] Leap second functional question

2008-02-21 Thread Unruh
[EMAIL PROTECTED] (Danny Mayer) writes: Unruh wrote: David J Taylor [EMAIL PROTECTED] writes: Unruh wrote: Note that leap seconds have been happening so rarely that almost noone has seen one happen, or watched the system as the clock goes through that. I guess you weren't around in

Re: [ntp:questions] Leap second functional question

2008-02-21 Thread Unruh
Greg Hennessy [EMAIL PROTECTED] writes: On 2008-02-20, Unruh [EMAIL PROTECTED] wrote: No orbital dynamics obeys Newton's ( or Einstein's) law of gravitation only in TAI not in UTC ot UT1. High precision orbital dynamics, such as the JPL's DE405, are done in Barycentric Dynamic Time, which

Re: [ntp:questions] Leap second functional question

2008-02-21 Thread Unruh
David Woolley [EMAIL PROTECTED] writes: You are asking for the impossible! Leap seconds keep time in synch with That was the intention. I was pointing out that you can only use true time to represent historic civil times, you cannot calculate the true time of a future civil time beyond

Re: [ntp:questions] Issues with w32tm on AD network

2008-02-21 Thread Danny Mayer
Andrew Hodgson wrote: Hi, I have had issues keeping accurate time on W32tm using an Active Directory based network with just Windows servers. I have a Linux workstation, and NTP on that workstation keeps loosing the time, and going to Stratum 16. Similarly, there are Cisco routers

Re: [ntp:questions] Issues with w32tm on AD network

2008-02-21 Thread David J Taylor
Danny Mayer wrote: [] Yes. w32time needs to be disabled, you cannot run both. The Meinberg installer does this for you and if you choose to uninstall NTP I believe it will reenable it. [] Danny FYI, that's at: http://www.meinberg.de/english/sw/ntp.htm Cheers, David