With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vrIpRipImportUsageFlag
Virtual Router Ip Rip Import Usage Flag
This flag when set to ignore indicates the routes that are not used and if set to use, indicates the routes which are used.
Back to Nortel-Magellan-Passport-IpMIB MIB page.
IPHost Network monitor allows you to monitor vrIpRipImportUsageFlag 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.