With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vrNsRowStatus
Virtual Router Ns Row Status
This variable is used as the basis for SNMP naming of vrNs components. These components can be added and deleted.
Back to Nortel-Magellan-Passport-NetSentryMIB MIB page.
IPHost Network monitor allows you to monitor vrNsRowStatus 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.