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configure dynamic NTP servers

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  • 1.  configure dynamic NTP servers

    Posted 02-05-2020 05:50

    Hello,

     

    I came across this project and I would like to use them as my NTP servers.

    Now, this project consists out of 150+ NTP server so it would be list too long to use in my configuration in my opinion.

    How would I apply these 4 dynamic hostnames to serve as my NTP servers?

    Can't seem to find a wiki on how to do this.

     

    Beeelze



  • 2.  RE: configure dynamic NTP servers

     
    Posted 02-05-2020 06:12

    Hello,

     

    why not using just pool.ntp.org as an NTP server inside the configuration? This address includes all of the other NTP servers, as far as I understand.



  • 3.  RE: configure dynamic NTP servers

     
    Posted 02-05-2020 06:25

    Hi,

    simply configure 0...4.<your-country-code>.pool.ntp.org NTP servers and you'll be all set. No need to try and reach all servers 😉

    Regards

    Ulf

    P.S. Before going country specific you'd want to check "You can also use the continental zones (For example europenorth-americaoceania or asia.pool.ntp.org), and a country zone (like ch.pool.ntp.org in Switzerland) - for all these zones, you can again use the 0, 1 or 2 prefixes, like 0.ch.pool.ntp.org. Note, however, that the country zone might not exist for your country, or might contain only one or two timeservers.".



  • 4.  RE: configure dynamic NTP servers

    Posted 02-05-2020 06:59

    Hi Guys,

     

    If I configure pool.ntp.org or any of the other NL NTP servers then it directly translates to an IP address.

    This means I can go on for about 150 times setting 0--3.pool.ntp.org before having reached all current active NTP servers.

    Or am I wrong?

    Or would I just configure them 4 once and be set for life?

     

    Beelze



  • 5.  RE: configure dynamic NTP servers

     
    Posted 02-05-2020 07:34

    Hi,

     

    as https://www.ntppool.org/zone/nl says:

    "

    To use this specific pool zone, add the following to your ntp.conf file:

    	   server 0.nl.pool.ntp.org
    	   server 1.nl.pool.ntp.org
    	   server 2.nl.pool.ntp.org
    	   server 3.nl.pool.ntp.org

    "

    You don't want to try and sync with 150 servers in parallel, right?!!

    Regards

    Ulf



  • 6.  RE: configure dynamic NTP servers
    Best Answer

     
    Posted 02-05-2020 07:51

    If you want to use just NL NTP servers, just configure these commands on your Junos device:

     

    set system ntp server 0.nl.pool.ntp.org

    set system ntp server 1.nl.pool.ntp.org

    set system ntp server 2.nl.pool.ntp.org

    set system ntp server 3.nl.pool.ntp.org

     

    You do not have to configure anything more.