2.15.12.6 Testing NTP over Anycast
Note:
A detailed Anycast test procedure is available from Spectracom upon
request. Please contact
techpubs@spectracom.com
.
2.15.13 NTP Orphan Mode
The NTP Orphan Mode allows NetClock to remain a valid time server to its NTP clients even if
all its input references have become invalid and the Holdover period has expired.
Per default, NetClock 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, NetClock will continue to be considered
a valid time server by its NTP clients.
Note, however, that the time served by NetClock after expiration of the Holdover period can
be of a low quality and therefore normally ought to be considered 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 net
work that is designed to normally operate without any external references.
To configure NTP Orphan Mode:
1.
Navigate to
MANAGEMENT > NTP Setup
.
2.
In the
NTP Services
panel, click the GEAR icon in the top right corner. The
Edit NTP Ser
vices
window will open:
3.
Click the
Orphan Mode
tab, and select an
NTP Stratum
other than
15
. This will be the
Stratum level NetClock will transition to in the event its input references become invalid.
4.
Click Submit. NetClock will automatically stop and re-start the NTP Service.
2.15 Configuring NTP
CHAPTER
2
•
NetClock User Reference Guide
Rev.
16
131
Summary of Contents for NetClock 9400 Series
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Page 42: ...BLANK PAGE 1 11 Regulatory Compliance 26 CHAPTER 1 NetClock User Reference Guide Rev 16...
Page 160: ...BLANK PAGE 2 17 Configuring Outputs 144 CHAPTER 2 NetClock User Reference Guide Rev 16...
Page 238: ...BLANK PAGE 3 5 Managing the Oscillator 222 CHAPTER 3 NetClock User Reference Guide Rev 16...
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