[ntp:questions] why does asterisk still show after the ntp server is shutdown?

Jun Hu duanshuidao at hotmail.com
Fri Nov 16 12:15:05 UTC 2012


Hi David


You've only lost three of the last 8 samples from that server. 



---> where do you  get that ?  the "reach" value  or other ?

> From: david at ex.djwhome.demon.invalid
> To: questions at lists.ntp.org
> Date: Fri, 16 Nov 2012 11:38:26 +0000
> Subject: Re: [ntp:questions] why does asterisk still show after the ntp	server is shutdown?
> 
> Jun Hu wrote:
> 
> > 
> >      remote                      refid            st t when poll reach   delay     offset      jitter
> > ==============================================================================
> > *192.168.227.148 LOCAL(0)        12 u  197      64  370       0.205   36.638   2.993
> > 
> > 
> > 
> > 
> > My expected is that  the "*" should be disappeared  after Server A shutdown , Is it right? 
> > 
> > 
> > why does asterisk still show after the ntp server is shutdown?
> 
> You've only lost three of the last 8 samples from that server.  You will 
> have to wait until there are rather less recent samples available before 
> it gets disqualified.
> 
> Also, I have a feeling that, if it is the only one, it may stay selected 
> until the root dispersion grows too large, as it was the last valid 
> system peer and the estimated error is still acceptable (downstream 
> systems can make their own judgements, based on root dispersion, as to 
> whether or not to trust it).
> 
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