With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vrPpIpPortIndex
Virtual Router Passport Ip Port Index
This variable represents the index for the vrPpIpPort tables.
Back to Nortel-Magellan-Passport-IpMIB MIB page.
IPHost Network monitor allows you to monitor vrPpIpPortIndex 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 multiplexers right now.