Chapter 8: Synchronization
Configuring the Sync Source
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Configuring the Sync Source
Note
To configure a sync source on which the sync source Quality parameter must be set according to
ANSI specifications and you must change the ETSI/ANSI mode to ANSI before configuring the sync
source. See
Changing the ETSI/ANSI Mode (CLI)
Note that the Quality parameter is not supported in release 10.6. It is supported in release 10.9.
Frequency signals can be taken by the system from Ethernet and radio interfaces.
The reference frequency may also be conveyed to external equipment through different interfaces. For
instructions how to configure the outgoing clock, see
Configuring the Outgoing Clock and SSM Messages
Frequency is distributed by configuring the following parameters in each node:
•
System Synchronization Sources – These are the interfaces from which the frequency is taken and distributed
to other interfaces. Up to 16 sources can be configured in each node. A revertive timer can be configured. For
each interface, you must configure:
o
Priority (1-16)
– No two synchronization sources can have the same priority.
o
Quality
– The quality level applied to the selected synchronization source. This enables the system to
select the source with the highest quality as the current synchronization source.
•
Each unit determines the current active clock reference source interface:
o
The interface with the highest available quality is selected.
o
From among interfaces with identical quality, the interface with the highest priority is selected.
When configuring the Sync source, the Sync mode must be set to its default setting of automatic. To display the
current Sync mode, enter the following CLI command in root view:
root> platform sync mode show
If the Sync mode is set to pipe, you must set it to automatic by entering the following CLI command in root view:
root> platform sync mode set automatic
When configuring an Ethernet interface as a Sync source, the Media Type of the interface must be RJ45 or SFP,
not
Auto-Type.
Viewing the Sync Source Status
To view the current sync source and its quality:
1
Select
Sync > Sync Source
. The Sync Source page opens.
Figure 133
Sync Source Page
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