ntp config tech note

Tony Li tony.li at tony.li
Sun May 23 23:04:35 UTC 2004



It needs to be set of trusted time sources that is as reliable as you 
feel is necessary.

If you're feeling extremely paranoid, then you can use the -g flag to 
peer with a number
of your private stratum 1 sources and then let the sanity checking do 
its job to
avoid any bogochimers.

Tony


On May 23, 2004, at 1:37 PM, Stephen J. Wilcox wrote:

>
> I would be very worried about forcing an unchecked clock sync against 
> a single
> time source in this way.. if your source is broken you can break a 
> lot..
>
> i think the limit is 1000s so you shouldnt be slipping by that much 
> unless
> something is broken?
>
> Steve
>
> On Thu, 20 May 2004, Jared Mauch wrote:
>
>> 	I've found it useful on older machines (PCs with cheap clocks and
>> oscilators) to cron ntpdate once an hour to prevent the clock from
>> getting too far off by itself.  I've found the daemon doesn't do good 
>> enough
>> of a job to sync on it's own...
>>
>> 	I'm also wondering, how many people are using the ntp.mcast.net
>> messages to sync their clocks?  what about providing ntp
>> to your customers via the "ntp broadcast" command on
>> serial links, etc..?
>>
>> 	- jared
>>
>>
>




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