With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
appnLcnDcRemoteDna
appn Logical Channel Number Dc Remote Dna
This attribute specifies the Data Network Address (Dna) of the remote. This is the called (destination) DTE address (Dna) to which this direct call will be sent. Initially, the called DTE address attribute must be present, that is, there must be a valid destination address. However, it may be possible in the future to configure the direct call with a mnemonic address, in which case, this attribute will contain a zero-length Dna, and the mnemonic address will be carried as one of the facilities.
Back to Nortel-Magellan-Passport-AppnMIB MIB page.
IPHost Network monitor allows you to monitor appnLcnDcRemoteDna 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.