With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
trkAtmCriticalVccUtilAlarmThreshold
trk Atm Critical Vcc Utilization Alarm Threshold
This attribute specifies the threshold value at which a critical alarm will be issued based on a sustained average ATM VCC utilization as indicated by the lastCalculatedVccUtilization attribute. The Set alarm is issued after 3 minutes of utilization greater than the threshold. The corresponding Clear alarm is issued after a subsequent 3 minutes of utilization less than or equal to the threshold. The value 200% is used to disable this threshold. For values other than 200%, the critical alarm threshold must be greater than the other thresholds.
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IPHost Network monitor allows you to monitor trkAtmCriticalVccUtilAlarmThreshold on Allied Telesis device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Nortel secure routers right now.