With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
shelfBusTestElapsedTime
shelf Bus Test Elapsed Time
1.3.6.1.4.1.43.1.12.3.1.1.2.3.2.12.1.1
This attribute records the length of time (in minutes) that the bus test has been running.
Back to Nortel-Magellan-Passport-ShelfMIB MIB page.
IPHost Network monitor allows you to monitor shelfBusTestElapsedTime 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 secure routers right now.