[169167] in North American Network Operators' Group
Re: OpenNTPProject.org
daemon@ATHENA.MIT.EDU (James R Cutler)
Mon Feb 17 11:02:17 2014
From: James R Cutler <james.cutler@consultant.com>
Date: Mon, 17 Feb 2014 11:01:41 -0500
To: NANOG list <nanog@nanog.org>
In-Reply-To: <53022CF6.3010208@one.verizon.com>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
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On Feb 17, 2014, at 10:38 AM, Anthony Williams =
<alby.williams@verizon.com> wrote:
> Blake:
>=20
> Just to make sure I've got this down, listing a device as a "peer" in
> the ntp.conf file will create a situation where both devices are =
saying,
> "I know what time it is" and splitting the difference? Whereas when =
you
> list a device as a "server", it's using that as the authority on the
> correct time?
That is not exactly correct. Listing a system as peer or server means =
that the time from that system will be used as input to the =
synchronization algorithm. The selection process may discard data =
depending on various criteria regardless of peer/server designation. The =
operations implications are the requirement for your own robust group of =
peers > 3 and lots of servers.
See=20
=95 RFC 5905: Network Time Protocol Version 4: Protocol and =
Algorithms Specification
=95 RFC 5906: Network Time Protocol Version 4: Autokey =
Specification
=95 RFC 5907: Definitions of Managed Objects for Network Time =
Protocol Version 4 (NTPv4)
=95 RFC 5908: Network Time Protocol (NTP) Server Option for =
DHCPv6
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