[ntp:questions] NNTP server causing large jumps in time

Danny Mayer mayer at ntp.isc.org
Sat May 3 22:55:19 UTC 2008


Kevin Oberman wrote:
>> Date: Fri, 2 May 2008 07:37:32 -0500
>> From: "Ryan Malayter" <malayter at gmail.com>
>> Sender: questions-bounces+oberman=es.net at lists.ntp.org
>>
>>
>> On Thu, May 1, 2008 at 12:25 PM, Steve Kostecke <kostecke at ntp.org> wrote:
>>
>>> You should always append iburst to your server lines.
>> Aussuming that were true, why isn't iburst the default? You would then
>> of course have to add "noiburst" to turn it off...
> 
> I suspect it is because iburst is relatively new and changing defaults is
> something that is usually done with great deliberation and only after
> people are REALLY sure that it is the right answer, especially when it
> only results in an improvement in startup sync and does not fix anything
> that was failing.
> 
> I can't think of cases where 'iburst' would break things, though some
> special cases might be better off without it, but for 'normal'
> configurations using the network to chime with servers. I would not use
> it on a reference clock, but I have not given a lot of thought to what
> the effect of this might be.

Dialup like ACTS require burst rather than iburst since it will only be 
online getting information when the modem is active.

Danny



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