With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
aal1CesInterfaceName
aal1 Ces Interface Name
This attribute identifies the instance of Chan to which an instance of Aal1Ces is linked.
Back to Nortel-Magellan-Passport-CircuitEmulationServiceMIB MIB page.
IPHost Network monitor allows you to monitor aal1CesInterfaceName 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.