Description: This object indicates whether a change in the received CDL Defect Indications, including the implicit end-to-end path defect indication as well as the CDL defect indication bits in the CDL OAM field, causes a notification to be generated.

disabled: Received CDL aggregate defect indication bit changes do not cause coCdlRxAggDefectIndChange notifications to be generated, and CDL flow defect indication changes from the CDL network at path terminating interfaces do not cause coCdlFromCdlNetFlowDIChange notifications to be generated.

enabledAtTerminatingInterfaces: A coCdlRxAggDefectIndChange notification is generated whenever - the received hop-by-hop forward defect indication (FDI-H) or the received hop-by-hop backward defect indication bit (BDI-H) changes at a hop terminating interface, or - the received end-to-end (aggregate path) defect indication bit (FDI-E) changes at an aggregate path terminating interface. A coCdlFromCdlNetFlowDIChange notification is generated whenever a CDL flow defect indication, i.e. implicit end-to-end path forward defect indication or end-to-end path backward defect indication bit, from the CDL network changes at a path terminating interface.

enabledAtAllInterfaces: a coCdlRxAggDefectIndChange notification is generated whenever a received CDL aggregate defect indication bit changes on any interface, and a coCdlFromCdlNetFlowDIChange notification is generated whenever a CDL flow defect indication, i.e. implicit end-to-end path forward defect indication or end-to-end path backward defect indication bit, from the CDL network changes at a path terminating interface.

To minimize the probability of prematurely reacting to momentary signal variations, a soak time may be incorporated into the notification in the following manner. A notification is generated after a defect is first detected, when the defect persists for a period of time that exceeds the set soak interval specified by coCdlDefectIndSetSoakInterval. A notification is generated after a defect stops being detected, when the defect does not appear over a period of time that exceeds the clear soak interval specified by coCdlDefectIndClearSoakInterval.

When changes in CDL defect indications are received for multiple interfaces within a short time span, notifications should be deferred so that each notification is generated at least one coCdlDINotifyThrottleInterval after the previous notification.