With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
appnDlusPrimaryDlus
appn Dlus Primary Dlus
This attribute indicates if this is the pipe to the primary default dependent LU server.
Back to Nortel-Magellan-Passport-AppnMIB MIB page.
IPHost Network monitor allows you to monitor appnDlusPrimaryDlus 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.