[ntp:questions] Does NTPClient need to be enabled for clients

Rob nomail at example.com
Fri Feb 12 18:15:28 UTC 2010


unruh <unruh at wormhole.physics.ubc.ca> wrote:
> ["Followup-To:" header set to comp.protocols.time.ntp.]
> On 2010-02-12, Rob <nomail at example.com> wrote:
>> Jonathan de Boyne Pollard <J.deBoynePollard-newsgroups at NTLWorld.COM> wrote:
>>>
>>>>
>>>>
>>>> We use our one of our data centers internal default gateway (Router).
>>>> Everything feeds off of that.
>>>> It had best work well. It was $100K +.
>>>>
>>> So what benefit is that $100K extra stratum gaining you?  It has to be 
>>> more than just splitting the UDP/IP path to the lower stratum servers in 
>>> twain.  But it's not reliability, because if your router goes down it 
>>> still takes your NTP server with it.  So what is it?  Do you perhaps 
>>
>> The big advantage of such a setup is that all your systems will agree
>> on the same time.  Locally you have short roundtrip time variations so
>> the polls of the local NTP server have small jitter and are not affected
>> by the loading of the internet link.
>>
>> It is usually more important that all systems have the same time, than
>> that this time is very accurate.
>
> But $100K? I can buy a linux box with 5GPS receivers for $1K. or but 5
> boxes each with its own GPS for $2K-- massive reduncancy.

The 100K probably bought him more than an NTP server.  It is the default
gateway for an entire data center.  A Linux box will not replace that.




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