On 2008-11-06, Yoann Fages <[EMAIL PROTECTED]> wrote: > I am trying to set up a ntp server on an embedded linux platform. My > platform will be connected to a switch (not connected to internet) and all > clients will synchronize their clock with my platform local clock.
The "synchronization" quality is directly related to the stability of the clock on your "platform". > I have downloaded and install ntpd, set up a conf file (ntp.conf) on my > platform: Assuming that you are using a stable release of NTP from www.ntp.org ... > conf file: > > server 127.127.1.0 Ntpd will take a bit under 4 minutes to "synchronize" to the local clock if you use that server line. You may reduce this time to a bit under 60 seconds by appending 'minpoll 4' to that server line. > fudge 127.127.1.0 stratum 3 refid AmT3 You should set the statum to something higher (i.e. 10, or more) just in case this private network is connected to a public network. > logfile /var/log/ntp.log > restrict default notrap nopeer nomodify > restrict 192.168.0.0 mask 255.255.0.0 Those restrict lines are not affecting the issue you have raised. But why do you feel that they are neccessary? > On my platform I launch ntpd -c ntp.conf. > > On a linux PC connected to the switch, I launch: ntpdate -b -v server_ip_@ > > Most of the time, I get this error message: "ntpdate : no server suitable > for synchronization found", but sometimes the synchronization is OK. You have to wait for ntpd on your "platform" to "synchronize" to the localclock. > What can I do to always have a synchronization? Speed up "synchronization" as shown above. Or use an NTP-dev snapshot; it accepts the Undisciplined Local Clock after the first poll. Or modify the source to suit your needs. Or consider other solutions such as timed, or rdate (on the clients) + inetd (on the "platform"). -- Steve Kostecke <[EMAIL PROTECTED]> NTP Public Services Project - http://support.ntp.org/ _______________________________________________ questions mailing list [email protected] https://lists.ntp.org/mailman/listinfo/questions
