With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vrIpIfInterfaceAddressIndex
Virtual Router Ip If Interface Address Index
This variable represents the index for the vrIpIf tables.
Back to Nortel-Magellan-Passport-IpMIB MIB page.
IPHost Network monitor allows you to monitor vrIpIfInterfaceAddressIndex 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.