Host Disciplining - Safran SecureSync 2400 User Manual

Per default, SecureSync will automatically downgrade itself to NTP Stratum 15,
should its input references become invalid and after expiration of the Holdover
period. By setting the NTP Orphan Mode to an NTP Stratum level other than 15,
SecureSync will continue to be considered a valid time server by its NTP clients.
Note, however, that the time served by SecureSync after expiration of the Hol-
dover period can be of a low quality and therefore normally ought to be con-
sidered invalid. NTP Orphan Mode exists as an option for timing networks that
must stay intact even if the time distributed is invalid. The other use case for
Orphan Mode is to allow for NTP to be utilized in an isolated timing network that
is designed to normally operate without any external references.
To configure NTP Orphan Mode:
2.15.14

Host Disciplining

Host Disciplining allows an NTP input reference to discipline SecureSync's oscil-
lator. This may be utilized e.g., with SecureSync units that do not have a GPS
receiver because they are operated as Stratum 2 servers.
CHAPTER •
2 SecureSync 2400 User Manual Rev. 5.2
1. Navigate to MANAGEMENT > NTP
2. In the NTP Services
Edit NTP Services
3. Click the Orphan Mode
will be the Stratum level SecureSync will transition to in the event its input
references become invalid.
4. Click Submit. SecureSync will automatically stop and re-start the NTP Ser-
vice.
Note: Per NTP protocol definition, for an
Network to operate properly, ALL servers and clients must be set to
the same Stratum level (e.g., "5").
Setup.
panel, click the GEAR icon in the top right corner. The
window will open:
tab, and select an
2.15 Configure NTP
NTP Stratum other than 15. This
NTP Orphan Mode Timing
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