With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
appnFlowReductionSequenceNumber
appn Flow Reduction Sequence Number
Flow reduction sequence numbers (FRSNs) are associated with Topology Database Updates (TDUs) and are unique only within each APPN network node. A TDU can be associated with multiple APPN resources. This object is the last FRSN sent in a topology update the adjacent network nodes. SNMP APPN MIB = ibmappnNodeNnFrsn
Back to Nortel-Magellan-Passport-AppnMIB MIB page.
IPHost Network monitor allows you to monitor appnFlowReductionSequenceNumber 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.