With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vrIpxSrvcNetworkNumberIndex
Virtual Router Ipx Srvc Network Number Index
This variable represents an index for the vrIpxSrvc tables.
Back to Nortel-Magellan-Passport-IpxMIB MIB page.
IPHost Network monitor allows you to monitor vrIpxSrvcNetworkNumberIndex 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.