With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vrPpIpPortLogicalIfIgmpIfGroups
Virtual Router Passport Ip Port Logical If Igmp If Groups
This attribute indicates the current number of entries for this interface in the cache table.
Back to Nortel-Magellan-Passport-IpMIB MIB page.
IPHost Network monitor allows you to monitor vrPpIpPortLogicalIfIgmpIfGroups 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.