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Hierarchy Level


Enables loopback tracking on Ethernet interfaces. When loopback tracking is enabled and the Ethernet Operation, Administration, and Management (OAM) link-fault management process (lfmd) detects its own generated packets on an interface, it marks the interface as down. When the loopback issue resolves, the interface is brought back up.

Required Privilege Level

interface—To view this statement in the configuration.

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

Release Information

Statement introduced in Junos OS Release 14.2.