With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
btdsLCoPathValue
btds L Co Path Value
This variable represents both the value and the index for the btdsLCoPathTable.
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IPHost Network monitor allows you to monitor btdsLCoPathValue 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.