With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
frDteDefragSequenceErrors
Frame Relay Dte Defrag Sequence Errors
Count of fragments received which were discarded due to out of sequence error detection. This counter will wrap around to 0 when it exceeds its maximum count.
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IPHost Network monitor allows you to monitor frDteDefragSequenceErrors 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.