With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
gvcIfDnaSdmDevOpTable
General Vc Interface Dna Sdm Dev Operation Table
This group specifies the operational attributes for devices that are potentially reachable by the SNA DLR service.
Back to Nortel-Magellan-Passport-GeneralVcInterfaceMIB MIB page.
IPHost Network monitor allows you to monitor gvcIfDnaSdmDevOpTable 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.