[ntp:questions] What exactly happens to ntpd if it is made to run and no server address is given in the ntp.conf file?

Steve Kostecke kostecke at ntp.org
Tue Sep 25 20:46:47 UTC 2012


On 2012-09-25, Brian Utterback <brian.utterback at oracle.com> wrote:

> On 9/25/2012 3:18 PM, unruh wrote:
>
>> On 2012-09-25, Arpith Nayak <arpithnayak at gmail.com> wrote:
>>
>>> Could someone give me a blow-by-blow account of what happens
>>> exactly?
>>
>> Try it. It quits AFAIK but I have never tried it.
>>
>>> Also, does ntpd search for an NTP server in the network accessible
>>> by it if no server is specified? Can we implement this functionality
>>> if not
>>
>> No. Where in the world would it search? Would you really want ntpd to
>> try every ip address on the internet to see if an ntpd server resides
>> there?
>
> Isn't that essentially what manycast does?

As long as your network topology supports the multicast server discovery
messages.

A minimal default configuration usable over the public Internet (which,
AFAIK, does not propagate multicast messages) requires the pool
directive.

-- 
Steve Kostecke <kostecke at ntp.org>
NTP Public Services Project - http://support.ntp.org/



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