With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
pppFramerLrcErrors
ppp Framer Lrc Errors
1.3.6.1.2.1.10.23.5.13.1.5
This attribute counts the total number of frames with LRC errors.
Back to Nortel-Magellan-Passport-PppMIB MIB page.
IPHost Network monitor allows you to monitor pppFramerLrcErrors 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.