Setting Up5-239161-A2-GH30-30 April 1998Table 5-3. Synchronous Data Port Options (7 of 7)Excessive Error Rate (EER) AlarmPossible Settings: Enable, DisableDefault Setting: EnableSpecifies whether an alarm is generated when an excessive error rate condition isdetected on the synchronous data port. Excessive Error Rate does not appear if:– Embedded Data Link is set to Disable.– Management Link is set to FDL on the Network Interface Options screen (seeTable 5-1).Enable – Generates an alarm.Disable – Does not generate an alarm.Excessive Error Rate ThresholdPossible Settings: 10E-4, 10E-5, 10E-6, 10E-7, 10E-8, 10E-9Default Setting: 10E-4Sets the error rate threshold that determines when an excessive error rate (EER)condition is declared for a synchronous data port. The EER is determined by the ratio ofthe number of CRC5 errors to the total number of bits received over a set period of time. Excessive Error Rate Threshold does not appear if:– Excessive Error Rate is set to Disable.– Embedded Data Link is set to Disable.– Management Link is set to FDL on the Network Interface Options screen (seeTable 5-1).– Both Near-End and Far-End Performance Statistics are set to Disable.10E-4 – Declares an EER if more than 1,535 CRC5 errors are detected in a 10-secondperiod. Clears when fewer than 1,536 CRC5 errors are detected within the same timeperiod.10E-5 – Declares an EER if more than 921 CRC5 errors are detected in a 60-secondperiod or a 10–4 condition occurs. Clears when fewer than 922 CRC5 errors aredetected within the same time period.10E-6 – Declares an EER if more than 92 CRC5 errors are detected in a 60-secondperiod or a 10–5 , or 10–4 condition occurs. Clears when fewer than 93 CRC5 errors aredetected within the same time period.10E-7 – Declares an EER if more than 9 CRC5 errors are detected in a 60-secondperiod or a 10–6 , 10–5 , or 10–4 condition occurs. Clears when fewer than 10 CRC5errors are detected within the same time period.10E-8 – Declares an EER if more than 41 CRC5 errors are detected in three 15-minuteintervals or a 10 –7 , 10–6 , 10–5 , or 10–4 condition occurs. Clears when fewer than42 CRC5 errors are detected within the same time period.10E-9 – Declares an EER if more than 4 CRC5 errors are detected in three 15-minuteintervals or a 10 –8 , 10–7 , 10–6 , 10–5 , or 10–4 condition occurs. Clears when fewer than5 CRC5 errors are detected within the same time period.
