With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vrIpMcastCtsTable
Virtual Router Ip Mcast Cts Table
This attribute specifies the maximum number of entries supported in the IP Multicast cache table on each LP. The default is 100 for a CP and 200 for an FP. The value must be multiple of 100.
Back to Nortel-Magellan-Passport-IpMIB MIB page.
IPHost Network monitor allows you to monitor vrIpMcastCtsTable 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.