With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
appnLsInXidBytes
appn Ls In Xid Bytes
1.3.6.1.2.1.34.4.1.1.5.1.1.16
This attribute counts the total number of XID bytes received on this link station.
Back to Nortel-Magellan-Passport-AppnMIB MIB page.
IPHost Network monitor allows you to monitor appnLsInXidBytes 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.