With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
btdsLCoOptimization
btds L Co Optimization
This attribute is used to specify whether this connection should attempt to optimize its path when requested by the routing PORS component. Every path is as optimal as it can be when it is established, but as network traffic patterns and configurations change this path may no longer be as optimal as it could be. The PORS connection manager on a module requests circuits to optimize at the optimization interval.
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IPHost Network monitor allows you to monitor btdsLCoOptimization 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.