Web Interface
Use INSTALL to upload the key and/or certificate files to the SyncServer.
After uploading the keys, click the RESTART button to make the key(s) active on the Syn-
cServer.
Upon making the added keys active, the SyncServer will be able to authenticate NTP pack-
ets from NTP servers that use those keys.
Newly added NTP Autokeys are not active until the user clicks RESTART.
RESTART Button
After changing the NTP configuration, click the RESTART button to put the new configuration
into effect. While the NTP daemon restarts, its services are temporarily unavailable, and it
generates the following alarm events: NTP Stratum Change, NTP System Peer Change,
NTP Leap Change.
NTP - Prefs
The settings on this page determine whether the NTP daemon, once synchronized, can
report an unsynchronized state.
Note: Microsemi recommends keeping the default Standard NTP Rules setting below. The
Override Behavior setting is mostly a "compatibility" setting for custom systems built around
legacy TrueTime GPS clocks such as the NTS-200.
Note: The SyncServer S350i does not include a GPS receiver.
Out of the three following stages of operation, the NTP - Prefs settings only apply during the
Loss of All References stage:
1. Startup: Upon starting, before synchronizing with any NTP associations, the NTP dae-
mon reports to potential NTP clients that it is unsynchronized by setting leap indicator to
11 and stratum to 16.
2. Typical Operation: After synchronizing to an NTP association the NTP daemon uses leap
indicator and stratum normally. Leap indicator reports whether a leap event is pending
(usually 00 - no alarm). Stratum reports the stratum of the NTP daemon relative to the
system peer (usually 1 through 3).
3. Loss of All References: If the NTP daemon cannot get the time from any association:
n
With Standard NTP Rules (Factory Default) The stratum and leap indicator remain
the same as they were in the Typical Operation stage. The system peer remains
the unchanged, but the reference time stamp isn't updated and the reach statistic
gradually decreases to zero.
n
With Override Behavior, if the estimated time error exceeds the Time Error Limit on
the TIMING - Holdover page, stratum reports 16 and leap indicator reports 11, as
they did during in the Startup stage.
After Loss of All References, if the NTP daemon synchronizes with an NTP association
again, it resumes Typical Operation.
Comments:
Page 50..........................................................................997-01520-02 Rev. F1
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