With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
gvcIfIndex
General Vc Interface Index
This variable represents the index for the gvcIf tables.
Back to Nortel-Magellan-Passport-GeneralVcInterfaceMIB MIB page.
IPHost Network monitor allows you to monitor gvcIfIndex 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.