[ntpwg] Documents, slides, etc. from WG meeting

[Heiko Gerstung]

Stewart Bryant schrieb:
> Heiko
>> The one thing that really enables PTP to reach an impressive accuracy 
>> level over an Ethernet/UDP connection is the fact that it uses 
>> hardware time stamping and therefore requires specialized hardware (if 
>> you want to benefit from that superior level of accurcacy).
>>   
> There is nothing to stop NTP doing h/w timestamping per se. The critical 
> difference is that PTP (1588)  does on path correction through the use 
> of the TC mechanism. If TC were added to NTP the two protocols would 
> provide the same level of accuracy.

I agree. The TC concept introduces quite a number of security problems, which 
have been addressed in V2 but obviously lead to an increased complexity. Adding 
a few things like hw-timestamping and on path correction to NTP would result in 
a synchronization protocol which offers a very good performance over both a WAN 
link and a controlled LAN environment (plus compatibility to millions of 
existing clients). Well, I have to go and talk to my engineers now :-)

Best Regards,
  Heiko



> Stewart
> 


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