[ntp:questions] NTP on LAN

05IT042 raghuramos1987 at gmail.com
Fri Sep 19 12:37:01 UTC 2008


On Sep 18, 10:24 pm, Steve Kostecke <koste... at ntp.org> wrote:
> On 2008-09-18, 05IT042 <raghuramos1... at gmail.com> wrote:
>
> > I have 2 computers connected on the same lan. I want one of them to be
> > set up as a NTP server and the other to be setup as a NTP client. This
> > is my initial goal. I tried giving the ip address of the server in the
> > client's /etc/ntp.conf file
>
> The ntp.conf on the "client" should, at a minimum, consist of:
>
>         driftfile /path/to/ntp.drift
>         server <address/hostname of your ntp server>
>
> Replace "/path/to/ntp.drift" with a full path + filename to a
> location which is writable ny the ntp user. A typical location is
> "/var/lib/ntp/ntp.drift".
>
> > and i gave localhost(127.0.0.1) in the servers /etc/ntp.conf file.
>
> This will not do what you think it will do.
>
> If you have no real time sources (i.e. remote time servers or locally
> attached ref-clocks) available you may use the Undisciplined Local
> Clock (or LocalCLK or LOCAL) or Orphan Mode.
>
> The LocalCLK and Orphan Mode merely allow ntpd to claim to synchronized
> to _something_ and serve time to others. They do not make the time
> correct. Nor do they control any drift or make your clock tick at the
> correct rate.
>
> If at all possible you should provide a sufficient number of real time
> sources to ntpd.
>
> If your application is not critical you may wish to use the NTP Pool
> (seehttp://support.ntp.org/poolandhttp://www.pool.ntp.org/). The
> mininal configuration for a server using the pool is:
>
>         driftfile /path/to/ntp.drift
> I       server 0.pool.ntp.org iburst
>         server 1.pool.ntp.org iburst
>         server 2.pool.ntp.org iburst
>         server pool.ntp.org
>
> To use the just Undisciplined Local Clock the minimal configuration is:
>
>         driftfile /path/to/ntp.drift
>         server 127.127.1.0
>         fudge 127.127.1.0 stratum 10
>
> To use just Orphan Mode the minimal configuration is:
>
>         driftfile /path/to/ntp.drift
>         tos orphan 10
>
> You may add the 127.127.1.x lines or the orphan line to an ntp.conf
> in addition to remote time servers. Orphan Mode is preferred if your
> version of NTP supports it.
>
> > After this how do i go about checking if
> > they're even getting synchronized or anything at all?
> > Also some links for learning more would also be appreciated.
>
> The NTP home-page ishttp://www.ntp.org/
>
> The NTP Public Services Project home-page ishttp://support.ntp.org/
>
> Documentation indices are available athttp://www.ntp.org/documentation.htmlandhttp://support.ntp.org/doc
>
> Documentation for the NTP Development release series is located athttp://www.eecis.udel.edu/~mills/ntp/html/
>
> Documentation for NTP Stable releases is included in the ./html/
> directory in the Distribution and is archived athttp://doc.ntp.org/
>
> > OS: Ubuntu Hardy Heron on both server and client.
>
> What version of NTP are you using?
>
> --
> Steve Kostecke <koste... at ntp.org>
> NTP Public Services Project -http://support.ntp.org/

Okay, i wanted 2 computers on a lan. One as the ntp server and the
other as the client. I want the client to synchronize to the server.
If i understand right, i have to use orphan mode on my server and what
on my client?




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