With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vrIpFwdProtocol
Virtual Router Ip Forward Protocol
This Attribute identifies the routing mechanism by which this route was learned.
Back to Nortel-Magellan-Passport-IpMIB MIB page.
IPHost Network monitor allows you to monitor vrIpFwdProtocol 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 modems right now.