With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vrMmIndex
Virtual Router Mm Index
1.3.6.1.4.1.562.2.4.1.100.2.1.1.10
This variable represents the index for the vrMm tables.
Back to Nortel-Magellan-Passport-VirtualRouterMIB MIB page.
IPHost Network monitor allows you to monitor vrMmIndex 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.
