With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vrPpSrclPortStateStpControl
Virtual Router Passport Srcl Port State Stp Control
This attribute specifies whether or not spanning tree protocol state for this bridge port is controlled by the spanning tree protocol. In essence it indicates the participation of this bridge port in the spanning tree protocol, by accepting and acting on received bridge protocol data units and by sending out the same. on signifies that this bridge port's spanning tree port state is controlled by the spanning tree protocol. A value of off signifies that the spanning tree port state of this bridge port is unaffected by the spanning tree protocol. This in effect puts the bridge port out of reach of the spanning tree protocol and in the forwarding state. Care should be taken while assigning a value of off to this attribute, as this might cause network loops. Please do not set this attribute to off unless you are absolutely sure about the effect of such an action on your network topology.
Back to Nortel-Magellan-Passport-BridgeMIB MIB page.
IPHost Network monitor allows you to monitor vrPpSrclPortStateStpControl 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 speech servers right now.