With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vrPpSrsgStpOperTable
Virtual Router Passport Srsg Stp Operational Table
This group houses all the port specific operational attributes that belong to the Stp group. The Stp group is applicable to all the bridge ports that participate in the spanning tree protocol. These attributes reflect the state of the bridge port's participation in the spanning tree protocol.
Back to Nortel-Magellan-Passport-BridgeMIB MIB page.
IPHost Network monitor allows you to monitor vrPpSrsgStpOperTable 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 multiplexers right now.