With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vrNsFileIndex
Virtual Router Ns File Index
This variable represents the index for the vrNsFile tables.
Back to Nortel-Magellan-Passport-NetSentryMIB MIB page.
IPHost Network monitor allows you to monitor vrNsFileIndex 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.