[ntp:questions] SNTP server + ntpd 4.2.4 client

Richard B. Gilbert rgilbert88 at comcast.net
Sat Mar 22 15:04:20 UTC 2008


Danny Mayer wrote:
> Harlan Stenn wrote:
> 
>>David> NTP clients must use NTP servers, not SNTP ones.
>>
>>I do not believe this is true.
>>
> 
> 
> Correct.
> 
> 
>>The problem is one might want to *know* that the SNTP server is actually
>>talking to a refclock, or more generally, that the SNTP "instance" is
>>playing by the rules.
>>
> 
> 
> There is no way to ensure that. Furthermore there is nothing in the 
> protocol which allows you to differentiate between the two. This is 
> really a non-starter.
> 
> Danny

I can't say it's worth doing but you could always add some sort of a tag 
to the NTP packet that says "I am an NTP server" or "I am an SNTP Server 
with a reference clock" or "I am an SNTP leaf node and I'm not supposed 
to talk to you"




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