With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
appnLsInInvalidSnaFrames
appn Ls In Invalid Sna Frames
This attribute counts the total number of invalid SNA frames received on this link station.
Back to Nortel-Magellan-Passport-AppnMIB MIB page.
IPHost Network monitor allows you to monitor appnLsInInvalidSnaFrames 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.