Need trusted NTP Sources

Lyle Giese lyle at lcrcomputer.net
Sun Feb 9 21:19:09 UTC 2014


Look back in the archives and see the problems that erupted when one of 
the big guys rebooted and came on line with bad time(tock.usno.navy.mil 
in Nov of 2012).  It was talked about in Outages and other lists at the 
time it happened.


On 02/09/14 14:56, Saku Ytti wrote:
> On (2014-02-09 15:45 -0500), Jay Ashworth wrote:
>
>> If I'm locked to 2 coherent upstreams and one goes insane, I'm going to
>> know which one it is, because the other one will still match what I already
>> have running, no?
>>
>> Or do I understand NTP less well than I think?
> I don't think you can reasonably tell which of the two is the false ticker.
> Andriy says your PC would blindly follow one who is in more agreement with
> your local lock, and PC's have terrible oscillators (I don't know why, 5EUR
> would buy LOT better oscillator).
>




More information about the NANOG mailing list