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Intresting article.

We are planing to put an ntp server on a xp or 2k machine acting as a server for a cashier system. It??s 50 to 60 POS-client conected to 15 local "servers" that administrate a system with 15 regional restaurants. And they all have to have the same time (and not public connected to internet.) Any suggestions?
magnuss
http://www.meinberg.de/english/sw/ntp.htm

You can install this on a PC or server, and it will update itself from a list of NTP servers on the internet. Make sure you have UDP port 123 allowed through your firewall so this machine can update. Once it's up and running just point your systems to the IP address of the machine where you have the NTP software installed.
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Meinberg NTP
paulrw@... 16th Mar 2011
To help set-up and monitor use http://www.meinberg.de/english/sw/time-server-monitor.htm
This is quite useful and allows you to set-up NTP from a Primary Server in your network which may also synchronise control room workstations.
In a process plant comprising of separate buildings or areas a secondary localised Server can be synchronised to the primary server, you may also synchronise the local PLCs such as Telemechanics, Schneider, Modicom, ABB , Siemens directly to their own local GUI server. Particularly useful if there are needs to have accurate log records etc. and maintain time sync in a group of PLCs when there is any possibility of loss of network connectivity to the primary server, Domain Controller or workstation on a separate building or site.
Upon IP Network reconnection to the primary then full network synchronisation is re-established
Complimentary with the use of Software such as GE-Fanuc Proficy HMI etc
hello,
I need help about the ntp server not been able to synchronise with the remote server but synchronises with the local host. Below is the code:

#--# localclock section #--#

server 127.127.1.1
fudge 127.127.1.1 stratum 12
#--# end of localclock section #--#

#--# server/peer section #--#

server 192.168.3.188 iburst
fudge 192.168.3.188 stratum 9

#--# end of server/peer section #--#

#--# miscellaneous section

driftfile "C:\Program Files\NTP\etc\ntp.drift"
server 192.168.3.188 burst iburst
#slewalways yes
#slewthreshold 0.128
#trap 192.168.3.188
l#ogconfig =clockall +syncall +sysall
broadcastdelay 0.008
calldelay 4
#--# end of miscellaneous section #--#


#--# broadcast client section #--#

broadcastclient
multicastclient

#--# end of broadcast client section #--#

#--# broadcast server section #--#

broadcast 255.255.255.255 TTL 1
#--# end of broadcast server section #--#

#--# access control section #--#

restrict address 192.168.3.101 netmask 255.255.255.0 nomodify notrap
restrict address 192.168.3.100 netmask 255.255.255.0 nomodify notrap

#--# end of access control section #--#

server 0.fi.pool.ntp.org iburst
server 1.fi.pool.ntp.org iburst
server 2.fi.pool.ntp.org iburst
server 1.se.pool.ntp.org iburst
server 0.de.pool.ntp.org iburst

#--# statistic section #--#

enable stats
statistics loopstats peerstats clockstats
#--# end of statistic section #--#

Below also is the output:
State Remote Refid Stratum Type When Poll Reach Delay Offset Jitter
* LOCAL(1) LOCL 12 Local clock 39 64 377 0.000 0.000 0.004
192.168.3.188 RMOT 16 Unicast server 1014d 64 000 0.000 0.000 0.000
Thanks for the help
Please be aware that windows implements a cut down version of NTP called Simple Network Time Protocol (SNTP). Most networking kit (e.g. Cisco) require a full NTP server to syncronise time with and therefore you would need to install an NTP server application.
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