lpE3CellLcdAlarm 1.3.6.1.4.1.562.2.4.1.12.6.5.11.1.1

This attribute displays whether the Loss of Cell Delineation (LCD) failure alarm state has been entered. This state is entered when LCD defects have been observed and accumulated for a period of time specified through the alarmActDelay attribute. In ATM cell direct mapping mode, an LCD defect occurs when Out of Cell Delineation (OCD) anomaly persists for x milliseconds, and disappears when the Out of Cell Delineation (OCD) is absent for x msec. An OCD anomaly occurs when 7 consecutive incorrect HECs have been detected. An OCD anomaly terminates when 6 consecutive correct HECs have been detected. For an AtmCell component located under a DS3 or E3 component with mapping = PLCP, the LCD defect is directly derived from the PLCP LOF defect. If LCD defects are intermittently occurring, the LCD defect accumulator is decremented at a rate of 1/10 of the incrementing rate (alarm integration ratio of 1/10), with all measurements based on a 200 ms polling cycle The component under which is located the AtmCell component goes into an operational state of disabled until the LCD alarm condition is cleared. The condition is cleared after the LCD defect has not been reported for a period of 10 seconds +/- 0.5 seconds. The lcdAlarm attribute is always set to off when the parent of the AtmCell component has been locked and left offline. This can also happen when the Path or Channel component has been suspended since its parent has been locked.