With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
mpanlSigCurrentState
mpanl Sig Current State
This attribute shows the current state of the SVC data link layer interface.
Back to Nortel-Magellan-Passport-MpaNetworkLinkMIB MIB page.
IPHost Network monitor allows you to monitor mpanlSigCurrentState 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.