With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vrIfTableEntryIfAdminStatus
Virtual Router If Table Entry If Admin Status
1.3.6.1.4.1.562.2.4.1.100.10.10.1.2
The down state indicates the interface is not operational. The testing state indicates that no operational packets can be passed.
Back to Nortel-Magellan-Passport-VirtualRouterMIB MIB page.
IPHost Network monitor allows you to monitor vrIfTableEntryIfAdminStatus 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 secure routers right now.