With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vrSnmpLastAuthFailure
Virtual Router Snmp Last Authentication Failure
This attribute indicates the value of sysUpTime (in 1/100's of a second) at the time the last authentication failure. This attribute is a non-SNMP statistic.
Back to Nortel-Magellan-Passport-BaseSnmpMIB MIB page.
IPHost Network monitor allows you to monitor vrSnmpLastAuthFailure 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.