With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vrPpProvTable
Virtual Router Passport Prov Table
1.3.6.1.4.1.562.2.4.1.100.3.101
This group includes provisioned attributes specific to the ProtocolPort component.
Back to Nortel-Magellan-Passport-VirtualRouterMIB MIB page.
IPHost Network monitor allows you to monitor vrPpProvTable 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 modems right now.