With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
x25DteRgLtPeerRowStatus
x25 Dte Rg Lt Peer Row Status
1.3.6.1.4.1.562.2.4.1.90.7.211.1.2
This variable is used to control the addition and deletion of individual values of the x25DteRgLtPeerTable.
Back to Nortel-Magellan-Passport-X25DteMIB MIB page.
IPHost Network monitor allows you to monitor x25DteRgLtPeerRowStatus 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.