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  • Support for admin down in PS interfaces (MX Series)—Starting in Junos OS Release 22.1R1, we support the admin down process for PS interfaces. Admin down is a process you use to disable a physical interface or logical interface , marking it as down, without removing the interface configuration from the system. You can use the existing disable statement under the [edit interfaces interface-name] or [edit interfaces interface-name unit logical-unit-number] hierarchy level to disable a PS physical interface or PS logical interface, respectively.

    If you disable a PS physical interface, then the interface will be admin down and logical interfaces will be link down. If you disable a PS logical interface, then the logical interface will be admin down and link up.

    [See disable (Interface).]