With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
frMuxFramerOverruns
Frame Relay Mux Framer Overruns
1.3.6.1.4.1.1570.1.2.13.1.8
This attribute is the total number of frames received from the link for which overruns occurred.
Back to Nortel-Magellan-Passport-FrameRelayMuxMIB MIB page.
IPHost Network monitor allows you to monitor frMuxFramerOverruns 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.
