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Thread: About NTP server. Please help

  1. #1
    Join Date
    Dec 2007

    Exclamation About NTP server. Please help

    We all know about NTP servers. It will serve the nerwork time all the clients under it. If it goes down means what's the position of that all clients. Is there any thing like master and slave concepts as in DNS. Please let me know about it as soon as psbl. Thank you...

  2. #2
    Good Guru
    Compunuts's Avatar
    Join Date
    May 2001
    NTP is purely a service without a demand. That means, if it goes down, nothing happen.

    Unlike DNS which store information about name to IP translation, all NTP does is to keep "true time". If a server that your NTP server reference to goes down, it will just try another server or it will just guestimate (with past references stored within its past cache) and will keep time until your server can reference to parent NTP server.

    When YOUR NTP server goes down, all your clients will do is keep their last current reference time intact and will update the clock when your NTP server comes back ontime.

    IF you run time sensitive applications (which is very rare), then you are to have fail safe way of keeping your NTP server up such as fail-over.
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  3. #3
    Where I work, we actually have our DNS servers double as NTP servers, with plenty of fault tolerance built in.
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