With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
frAtmDlciNiwfAvgFrameSize
Frame Relay Atm Dlci Niwf Average Frame Size
This attribute indicates the average frame size that was used for this connection as part of the traffic parameter conversion policy. A value of zero indicates that the avgFrameSize is not yet available for this connection.
Back to Nortel-Magellan-Passport-FrameRelayAtmMIB MIB page.
IPHost Network monitor allows you to monitor frAtmDlciNiwfAvgFrameSize 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.