[ntp:questions] Re: Setting up a synchronization network

Richard B. Gilbert rgilbert88 at comcast.net
Sat Jan 17 04:21:34 UTC 2004


The address Comcast gave me was 172.30.118.35.  When it proved 
unreachable, I looked up  the owner and found it assigned to the IANA.

Maarten Wiltink wrote:

>"Richard B. Gilbert" <rgilbert88 at comcast.net> wrote in message
>news:4JmdnS-66-AGQprdRVn-gQ at comcast.com...
>[...]
>  
>
>>I did ask my ISP (Comcast), at home, about NTP servers.  Their tech
>>support promptly gave me a bogus IP address and hung up.   The IP
>>address was not reachable and was recorded as belonging to the Internet
>>Assigned Numbers Authority (IANA).  Does any one know if Comcast has
>>such a server?
>>    
>>
>
>It appears not to. (Tried DNS lookups of ntp, clock, time, and chime
>in domain comcast.com, the first three also with zero or one appended.
>Not conclusive but it tends to find most ISP NTP servers.)
>
>Was that IP address in 10/8, 172.16/12, or 192.168/16, by any chance?
>It may have been an internal IP address. ISP _do_ tend to run NTP
>servers, because log files are worth little without accurate time, but
>good ISPs will either make those servers accessible to their clients,
>or specialised ones.
>
>
>  
>
>>It's not terribly important at home; I only have six computers running
>>and it's a hobby/self study lab.
>>    
>>
>
>While I like to think I have a good ISP, they break the rule of having
>disjunct reference pools for their three peers. I synch my gateway with
>the one of those that's aliased to ntp.$isp.$net and mostly have
>excellent convergence. (It's actually quite bad right now, but I've
>never seen that before.)
>
>Groetjes,
>Maarten Wiltink
>
>
>  
>




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