No longer in Holdover: Input references were lost at one point (or declared not
valid), but have since been restored OR the Input references were not restored
before the Holdover period expired (Time Sync alarm is asserted).
In Sync: SecureSync is synchronized to its Time and 1PPS inputs.
Not In Sync: SecureSync is not synchronized to its Time and 1PPS inputs and is not
currently in Holdover. NTP will indicate to the network that it is Stratum 15 and so
the time server likely be ignored as a time reference.
Sending trap for event 1 (SNMPSAD): An SNMP trap was sent by the SNMP
agent to the SNMP Manager. The event number in this entry indicates which SNMP
trap was sent.
The Unit has Rebooted: SecureSync was either rebooted or power cycled.
Journal Log
Displays log entries created for all configuration changes that have occurred (such as cre-
ating a new user account, for example).
NTP Log
The NTP log displays operational information about the NTP daemon, as well as NTP
throughput statistics (e.g., packets/sec.). Examples for entries in this log include indications
for when NTP was synchronized to its configured references (e.g., it became a Stratum1
time server), as well as stratum level of the NTP references.
The NTP throughput statistics data can be utilized to calculate mean values and the stand-
ard deviation.
Example log entries include:
Synchronized to (IP address), stratum=1: NTP is synchronizing to another
Stratum 1 NTP server.
ntp exiting on signal 15: This log entry indicates NTP is now indicating to the net-
work that it is a Stratum 15 time server because it is not synchronized to its selected
reference.
Time reset xxxxx s: These entries indicate time corrections (in seconds) applied to
NTP.
No servers reachable: NTP cannot locate any of its configured NTP servers.
Synchronized to PPS(0), stratum=0: NTP is synchronized using the PPS ref-
erence clock driver (which provides more stable NTP synchronization).
Oscillator Log
Displays log entries related to oscillator disciplining. Provides the calculated frequency
error periodically while synchronizing to a reference.
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CHAPTER 4 • SecureSync 2400 User Manual Rev. 2
4.5 Quality Management
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