With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vrIpOutNoRoutes
Virtual Router Ip Out No Routes
The number of outbound datagrams discarded because no route could be found to transmit them to their destination. This counter includes any datagrams counted in forwDatagrams. outNoRoutes wraps to zero if reaches its maximum defined value.
Back to Nortel-Magellan-Passport-IpMIB MIB page.
IPHost Network monitor allows you to monitor vrIpOutNoRoutes 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.
