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Hierarchy Level

For ACX Series and QFX Series:

For MX Series:

Hierarchy Level

Release Information

Statement introduced in Junos OS Release 15.2 for MX Series routers.

Statement introduced in Junos OS Release 17.3 for QFX Series switches.


Specify the asymmetry value between the master and the slave. A compensating value for networks in which there is path asymmetry between the 1588v2 slave and master. Specify a positive or negative value that is added to the path delay value from the slave to the master, making the delay symmetric and equal to the path from the master to the slave.


numberThe asymmetry value is in nanoseconds and can vary from minus (–)100 milliseconds to 100 milliseconds, allowing compensation for up to 1/10 of a second of path asymmetry.

Required Privilege Level

interface—To view this statement in the configuration.

interface-control—To add this statement to the configuration.