With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
traceSessionX25VcLocalRxPktSize
trace Session X25 Vc Local Rx Packet Size
1.3.6.1.4.1.562.2.4.1.106.3.2.2.10.1.14
This attribute displays the locally negotiated size of send packets.
Back to Nortel-Magellan-Passport-X25TraceRcvrMIB MIB page.
IPHost Network monitor allows you to monitor traceSessionX25VcLocalRxPktSize 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 secure routers right now.