Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?





Hierarchy Level

Release Information

Statement introduced before Junos OS Release 7.4.

Statement introduced in Junos OS Release 11.1 for the QFX Series.


For ATM encapsulation only, configure the OAM F5 loopback cell period. Not supported on ATM-over-SHDSL interfaces.

For ATM2 IQ PICs only, configure the OAM F4 loopback cell period at the [edit interfaces interface-name atm-options vpi vpi-identifier] hierarchy level.


If you omit this statement, OAM F5 loopback cells are not initiated, but the interface still responds if it receives OAM F5 loopback cells.


disable—Disable the OAM loopback cell transmit feature.

seconds—OAM loopback cell period.

Range: 1 through 900 seconds

Required Privilege Level

interface—To view this statement in the configuration.

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