With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vrIpMcastIgmpGcExpiryTime
Virtual Router Ip Mcast Igmp Gc Expiry Time
This attribute indicates the minimum amount of time reamining before this entry will be aged out.
Back to Nortel-Magellan-Passport-IpMIB MIB page.
IPHost Network monitor allows you to monitor vrIpMcastIgmpGcExpiryTime 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 modems right now.