With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
appnLsDlcType
appn Ls Dlc Type
1.3.6.1.2.1.34.4.1.1.5.1.1.5
This attribute indicates the type of data link control that this LS is associated. Possible types are: sdlc - synchronous data link control x25 - QLLC logical link control tokenRing - IEEE 802.2 logical link control llc2 - RFC1490 and IEEE 802.2 logical link control. other - dlc type other than those listed above.
Back to Nortel-Magellan-Passport-AppnMIB MIB page.
IPHost Network monitor allows you to monitor appnLsDlcType 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.