With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
appnIsrSessCosName
appn Isr Sess Cos Name
This is the class of service used to select the route. Class of service (COS) is a designation of the transport network characteristics, such as route security, transmission priority, and bandwidth, needed for a particular session. The class of service is derived from the mode name specified by the initiator of the session.
Back to Nortel-Magellan-Passport-AppnMIB MIB page.
IPHost Network monitor allows you to monitor appnIsrSessCosName 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 multiplexers right now.