[ntp:questions] NTP.log interpretation
kostecke at ntp.org
Sat Apr 19 14:50:37 UTC 2014
On 2014-04-19, Jason Rabel <jason at extremeoverclocking.com> wrote:
> Then I have three Stratum-2 servers that use the "server" line for
> the S1 servers, but in addition they use the "peer" line with each
> other S2 server. When you combine that with "orphan" mode if all my S1
> servers went down, the S2's would work with each other to figure out
> their best guess at the right time.
Orphan Mode is an automatic server discovery scheme. Nothing more.
Orphan Mode does not make it possible for the members of a "time island"
to determine the correct time in the absence of reference sources.
Symmetric Active/Passive Mode (aka Peer Associations) allows the
creation of a bidirectional link between two ntpd instances.
In my experience, the ntpds in a peer association will ignore each other
when they have the same sys_peer (i.e. when they are "synchronised" to
the same source).
And the Mitigation Rules do not provide special Peer Classification for
Symmetric Active/Passive Mode.
Steve Kostecke <kostecke at ntp.org>
NTP Public Services Project - http://support.ntp.org/
More information about the questions