With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
lpImaCellCapacity
lp Ima Cell Capacity
This attribute indicates the total cell capacity (in cells per second) which is provided to the ATM layer. This cell capacity takes into account the physical and IMA level overheads.
Back to Nortel-Magellan-Passport-ImaMIB MIB page.
IPHost Network monitor allows you to monitor lpImaCellCapacity 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 multiplexers right now.