With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
frUniDlciMeasurementInterval
Frame Relay Uni Dlci Measurement Interval
This attribute specifies the time interval (in milliseconds) over which rates and burst sizes are measured. This attribute should be ignored when rateEnforcement is off.
Back to Nortel-Magellan-Passport-FrameRelayUniMIB MIB page.
IPHost Network monitor allows you to monitor frUniDlciMeasurementInterval 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 switches right now.