Quality-Level (Chassis Synchronization Source Interface) - Juniper ACX1000 Configuration Manual

quality-level (Chassis Synchronization Source Interface)

Syntax
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quality-level (prc | prs |sec | smc | ssu-a | ssu-b | st2 | st3 | st3e | st4 | stu | tnc);
[edit chassis synchronization source (bits
Statement introduced in Junos OS Release 12.2 for ACX Series routers.
For ACX Series routers operating with Synchronous Ethernet, configure the quality level
(QL) for a timing source so that the router can know the best available source with which
to synchronize. The QL specifies the expected accuracy level of the clock and is
transmitted across the network through Synchronization Status Messages (SSMs) over
the Ethernet Synchronization Message Channel (ESMC).
The quality level options are valid depending on the configured
or at the [
option-2 edit chassis synchronization
Both and
option-1 option-2
For , QL must be configured for external clocks (
option-1
is enabled.
For , the default QL for external clocks is QL_STU whether or not QL is enabled.
option-2
prc —Timing quality of a primary reference clock (option-1 only).
—Clock traceable to a primary reference source (option-2 only).
prs
—Timing quality of an SDH equipment clock (option-1 only).
sec
— Clock traceable to a self-timed SONET (option-2 only).
smc
—Timing quality of a type I or IV slave clock (option-1 only).
ssu-a
—Timing quality of a type VI slave clock (option-1 only).
ssu-b
—Clock traceable to Stratum 2 (option-2 only).
st2
st3 —Clock traceable to Stratum 3 (option-2 only).
—Clock traceable to Stratum 3E (option-2 only).
st3e
st4 —Clock traceable to Stratum 4 free-run (option-2 only).
—Clock traceable to an unknown quality (option-2 only).
stu
tnc —Clock traceable to a transit node clock (option-2 only).
interface—To view this statement in the configuration.
interface-control—To add this statement to the configuration.
| gps | interfaces
] hierarchy level.
SSM quality levels (QL) are supported:
Chapter 41: Configuration Statements
interface-name)]
;
network-option option-1
or ) whether or not QL
gps bits
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