With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
pppFramerFrmFromIf
ppp Framer Frm From If
1.3.6.1.2.1.10.23.5.13.1.2
This attribute counts the number of frames received from the link interface by Framer.
Back to Nortel-Magellan-Passport-PppMIB MIB page.
IPHost Network monitor allows you to monitor pppFramerFrmFromIf 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.