[ntp:questions] Re: Architecture / best practice for small/medium company setups

Joachim Schrod jschrod at acm.org
Fri Jun 30 10:03:31 UTC 2006


Tom Smith wrote to me offline about internal server peering, and I want to post 
some here (with his permission) to get further feedback on it. What do you think 
of his idea to use server declarations to handle better the case of Internet 
connection outage?

> You may peer between local servers, but it is important that
> you have fewer peers on each server than real clock sources.
> Otherwise, the peers can start following one other rather than
> the real clocks. If I have 4 low stratum servers configured,
> I generally try to have no more than 2 peers. In fact, I usually
> use server rather than peer declarations, because "peer" establishes
> a bidirectional server relationship, which can unintentionally
> multiply the number of server/peers. For example, you might
> configure server declarations among the 4 local servers as
> follows:
> 
> A->B,C
> B->C,D
> C->D,A
> D->A,B

TIA for more insight,

	Joachim

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Joachim Schrod				Email: jschrod at acm.org
Roedermark, Germany




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