[ntp:questions] Re: Peer configuration question?

Nicholas Garfield Nicholas.Garfield at cern.ch
Thu Jan 29 16:00:11 UTC 2004

to add another question to this:

For my stratum 2 servers I have listed several servers, of which I have
marked two of them as "prefer".
What is the effect of having two preferred servers?
There is also a peer statement to my other stratum 2 time server (not
"preferred").  Is this effected by the preferred servers?

"Nicholas Garfield" <Nicholas.Garfield at cern.ch> wrote in message
news:bvb2ff$hen$1 at sunnews.cern.ch...
> Hi All,
> I have two stratum 1 servers which are each connected to Trimble Accutime
> GPS receivers.  Then two more servers use these sources as stratum 2
> servers.
> I have been reading the NTP FAQ Section 6.2. Advanced Configuration,
> I am unsure of the configuration.
> (1) For the stratum 1 servers, should there be a peering relationship
> between them?
> ie on server 1 config is
> server prefer minpoll 4 maxpoll 4 #ACCUTIME
> peer version 4 minpoll 4 maxpoll 4 #SERVER 2
> On server 2 config is
> server prefer minpoll 4 maxpoll 4 #ACCUTIME
> peer version 4 minpoll 4 maxpoll 4 #SERVER 1
> Also, would someone be kind enough to clarfiy whether or not the "prefer"
> keyword is necessary here.  I figure (probably incorrectly) that I would
> prefer the time to come from the accutime, but how would this work with
> idea of selecting the "best" clock.
> (2) Similarly the config for the stratum 2 servers uses peering.
> I am not 100% clear what the difference between a "server" declaration and
> "peer" declaration is.  When a server and a peer is specified how does ntp
> choose which is preferred?
> Thankyou in advance to anyone who can explain clearly when/where the peer
> and prefer statements should/should not be used.
> Regards
> Nick

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