Hierarchy level [edit chassis synchronization] added for ACX710 in Junos OS Release 20.2R1.
Statement introduced in Junos OS Release 12.3.
Configure the minimum quality level threshold to select a clock source (see Table 1). If the quality level of the output clock source drops below the configured minimum quality level threshold, the external output clock is suppressed on the external output interface—external—on SCBE and on the external output interfaces—external-0/0 and external-1/0—on SCBE2.
Table 1: Quality Levels
Timing quality of a primary reference clock (option-1 only).
Clock traceable to a primary reference source (option-2 only).
Timing quality of an SDH equipment clock (option-1 only).
Clock traceable to a self-timed SONET (option-2 only).
Timing quality of a type I or IV client clock (option-1 only).
Timing quality of a type VI client clock (option-1 only).
Clock traceable to Stratum 2 (option-2 only).
Clock traceable to Stratum 3 (option-2 only).
Clock traceable to Stratum 3E (option-2 only).
Clock traceable to Stratum 4 free-run (option-2 only).
Clock traceable to an unknown quality (option-2 only).
Clock traceable to a transit node clock (option-2 only).
Required Privilege Level
interface—To view this statement in the configuration.
interface-control—To add this statement to the configuration.