With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
mpanlDlciDiscCongestedToIf
mpanl Dlci Disc Congested To If
This attribute counts the number of frame discards at the MPANL service due to local congestion in the direction toward the interface. When this count reaches maximum, it wraps to zero.
Back to Nortel-Magellan-Passport-MpaNetworkLinkMIB MIB page.
IPHost Network monitor allows you to monitor mpanlDlciDiscCongestedToIf 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 multiplexers right now.