With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vrSnmpComAccessMode
Virtual Router Snmp Com Access Mode
Once the sending SNMP entity is authenticated as a member of a community, the community access mode determines what level of access it has for each object in its view.
Back to Nortel-Magellan-Passport-BaseSnmpMIB MIB page.
IPHost Network monitor allows you to monitor vrSnmpComAccessMode 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 multiplexers right now.