The router automatically disables all F5 OAM fault management and VC integrity services configured on a VC when you change the administrative status of the corresponding ATM interface, ATM AAL5 interface, or ATM 1483 subinterface from enabled to disabled.
To set the administrative status of an interface to disabled, use the atm shutdown command (for an ATM interface), the atm aal5 shutdown command (for an ATM AAL5 interface), or the atm atm1483 shutdown command (for an ATM 1483 subinterface). You can also use the shutdown command to disable the interface.
When F5 OAM is disabled, the OAM VC status field in the show atm vc atm command display indicates that the VC is not managed. The VC does not receive or transmit F5 OAM cells while F5 OAM is disabled. For examples of the show atm vc atm command display, see show atm vc atm.
When the corresponding ATM interface, ATM AAL5 interface, or ATM 1483 subinterface is reenabled, the router automatically restores F5 OAM services on the associated VCs.