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Questions tagged [ntp]

NTP stands for Network Time Protocol, and it is an Internet protocol used to synchronize the clocks of computers to some time reference.

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Setup NTP on Debian

I installed ntp on my debian system: apt-get install ntp ntpdate ntp-server. My questions: How often is the time synchronized - is there a schedule? Is there a log that says when the time was synchronized? Is it possible to control when the time…
Dánjal Salberg Adlersson
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Routers do not Synchronize Clock using NTP

I have three Cisco routers connected as shown in the diagram. The problem is, while R1 is synchronizing the clock using NTP, R2 and R3 are not. All the three routers have been configured for NTP using the same set of commands, ntp server…
Masroor
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Ntpd excessively inaccurate

I have ntpd set up (Meinberg ntp-4.2.6p5@london version for Windows on a Windows 7 client) with a bunch of nearby servers selected for low ping times (usually 10-20ms ping). However it seems my clock is only accurate to within 100ms or less, and it…
Alex I
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w32tm /query /configuration equivalent in 2003?

I'm trying to figure out the NTP server in use, so I issued w32tm /query /configuration But that doesn't work, Looks like /configuration is invalid in 2003, what's a possible substitute?
daisy
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NTP devices - Meinberg etc

I am learning about NTP & I was wondering why anyone would buy a Separate Device like the time servers/devices available from Meinberg etc? Can you not run some software which syncs with reputed time sources which would provide the same function?…
user93353
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Leap-second flag not forwarded to NTP clients

I'm making some tests with leapfile feature on ntpd to send fake leap-seconds and ensure our Linux platform is resilient to the "bug". The NTP lab is quite simple: a "master" server with local clock running ntpd with leapfile feature, and a "client"…
santisaez
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Increasing time difference between Windows Server 2003 and time.nist.gov even after explicitly syncing time

I have synced the time of my server to time.nist.gov. This server communicates with a client’s server which is also synced with time.nist.gov. After noting that we seemed to be out of sync with the time server even after explicit syncing, I set up…
Abbas
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Make Windows Server 2008 periodically update internet NTP

I have read a bunch of posts and other information on the internet and I have yet to come across the solution to this question. On a windows network, all the computers sync up with the domain controller (for time), and this is working. The problem…
jeffery_the_wind
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How can I sync time between two ubuntu computers, not connected to the internet

I have two computers connected to each other over an ad-hoc wifi. How can I make the first computer always sync to the time of the second computer? I tried playing with NTP, but could not figure out how to make it work in this situation.
Yogi
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NTP sync time frequently on Windows 7

I have several Win7 64bit configurations - local dev machine, remote server, VPS. I'm running time sensitive tasks on all of them, therefore I need Windows Time service to: Sync Sync well (<30ms) Sync frequently (once per minute) Currently…
Jonathan
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Synchronize time on a private network that must not connect to the Internet

For HIPAA compliance, this network can not be connected to the Internet or to any other network or computer which connects to the Internet. I've got a small private network comprised entirely of Macs running Mac OS X 10.6. The computers share files…
Justin Force
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Xen HVM guest has severe clock drift

I am seeing a very severe clock drift on my Xen HVM VPS, rented from a hosting provider, so I don't have access to the dom0 system. I continuously run ntpd, but the clock drifts by as much as 30 seconds in 5 minutes and NTP cannot keep up. Has…
ipartola
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Why does Ubuntu 9.04 reset my Windows clock?

I've got a rig with 2 hard drives. I've put Ubuntu 9.04 (Jaunty) on one of the drives and Windows Vista SP2 runs on the other drive. I went with this approach rather than dual boot since I wanted to be able to swap out the OSes as I please and just…
kpax
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Best practice for system clock sync on KVM host

I have an Ubuntu 9.10 server running as a KVM host with ntpd installed on it. The host system has the correct system time. At the moment I only have a single KVM guest, also Ubuntu 9.10 server. I do not have ntpd installed on it, and I just…
Tauren
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Ntpd monitoring

Is it possible to monitor an ntpd server running on windows using snmp ( or possibly something else ) I couldn't find any documentation on the subject. I'm interested in any information the server can provide, like current date / time, connection…
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