With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
appnDluDsStatMaxTxBtuSize
appn Dlu Ds Statistics Max Tx Btu Size
This is the maximum BTU size (length of the information field in a frame) that can be sent on the session.
Back to Nortel-Magellan-Passport-AppnMIB MIB page.
IPHost Network monitor allows you to monitor appnDluDsStatMaxTxBtuSize 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.