With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
rtgVnsMultiRxPkts
rtg Vns Multi Rx Packets
1.3.6.1.4.1.562.2.4.1.40.3.16.1.7
This attribute counts the multicast packets received by this Vns component. The counter wraps around to zero when the maximum value is reached.
Back to Nortel-Magellan-Passport-VnsMIB MIB page.
IPHost Network monitor allows you to monitor rtgVnsMultiRxPkts 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.