With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
frMuxDlciDeBytesFromIf
Frame Relay Mux Dlci De Bytes From If
1.3.6.1.4.1.1570.1.4.13.1.6
This attribute counts the bytes received from the interface with the Discard Eligibility (DE) bit set. When the count reaches maximum it wraps to zero.
Back to Nortel-Magellan-Passport-FrameRelayMuxMIB MIB page.
IPHost Network monitor allows you to monitor frMuxDlciDeBytesFromIf 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.