With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vrIpOspfNbrEvents
Virtual Router Ip Ospf Neighbor Events
The number of times this neighbor relationship has changed state, or an error has occurred.
Back to Nortel-Magellan-Passport-IpMIB MIB page.
IPHost Network monitor allows you to monitor vrIpOspfNbrEvents 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.