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Hierarchy Level

Release Information

Statement introduced before Junos OS Release 7.4.


For ATM encapsulation only, configure Operation, Administration, and Maintenance (OAM) F5 loopback cell count thresholds. This feature is not supported on ATM-over-SHDSL interfaces.

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


cells—Minimum number of consecutive OAM F4 or F5 loopback cells lost before a VC is declared down.

Range: 1 through 255

Default: 5 cells

Required Privilege Level

interface—To view this statement in the configuration.

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