With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vrBrPteStpType
Virtual Router Br Pte Stp Type
This attribute specifies the type of the spanning tree protocol this bridge port is participating in.
Back to Nortel-Magellan-Passport-BridgeMIB MIB page.
IPHost Network monitor allows you to monitor vrBrPteStpType 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.