Re: [Hampshire] ntpd vs. ptpd

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Author: James Courtier-Dutton
Date:  
To: lug, Hampshire LUG Discussion List
Subject: Re: [Hampshire] ntpd vs. ptpd
On 25 January 2012 15:37, Vic <lug@???> wrote:
>
>> I thought that only worked when transmitted over a serial link, i.e. ATM
>> or DVB.
>
> You thought wrong.
>
>> It is not so effective on packet based links such as Ethernet.
>
> All headend distribution systems these days are Ethernet-based. It is
> incredibly effective.
>
>> I have never heard of those timestamps being used to synchronize
>> multiple endpoints.
>
> I'm sure there are many thing in the Universe of which you have not heard.
> This does not mean they do not exist.
>
>> I have only ever seen them used to do synchronization within each
>> device in the chain.
>
> This leaves us with one of two possible situations :-
>
>  - Timestamps aren't used in this way
>  - You are not omniscient.
>
> Given that I've worked on these systems for quite a few years, I know
> which one I believe to be true.
>
> Vic.
>


I appear to be wrong here. Sorry.

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