With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vrIpOspfAggregateAggregateNetIndex
Virtual Router Ip Ospf Aggregate Aggregate Net Index
This variable represents an index for the vrIpOspfAggregate tables.
Back to Nortel-Magellan-Passport-IpMIB MIB page.
IPHost Network monitor allows you to monitor vrIpOspfAggregateAggregateNetIndex 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.