With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
mpanlSigMpanlIFramesRcvdDiscarded
mpanl Sig Mpanl I Frames Received Discarded
This attribute counts the number of SVC I-frames received but have been discarded. The discard reasons are: 1. incorrect frame size 2. frame is out of sequence 3. frame received while the network side of the SVC data link layer is not in the informationTransfer or waitingAck state. When this count reaches maximum, it wraps to zero.
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IPHost Network monitor allows you to monitor mpanlSigMpanlIFramesRcvdDiscarded 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 modems right now.