With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
appnIsrSessPriStatsMaxRxBtuSize
appn Isr Sess Pri Stats Max Rx Btu Size
This is the maximum BTU size (length of the information field in a frame) that can be received on the session.
Back to Nortel-Magellan-Passport-AppnMIB MIB page.
IPHost Network monitor allows you to monitor appnIsrSessPriStatsMaxRxBtuSize 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 switches right now.