With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
nmisTelnetSessionClientRemoteIpAddr
nmis Telnet Session Client Remote Ip Address
This attribute indicates the IP address of the remote side of the client connection.
Back to Nortel-Magellan-Passport-MgmtInterfacesMIB MIB page.
IPHost Network monitor allows you to monitor nmisTelnetSessionClientRemoteIpAddr 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.