With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vrIpxOutDiscards
Virtual Router Ipx Out Discards
The number of outgoing IPX packets discarded due to reasons other than those accounted for in outMalformedRequests or outFiltered. This counter wraps around to zero after reaching the maximum value of 4294967295.
Back to Nortel-Magellan-Passport-IpxMIB MIB page.
IPHost Network monitor allows you to monitor vrIpxOutDiscards 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.