With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
crsPAddrSRidMidRoutingId
crs P Address S Rid Mid Routing Id
This attribute specifies a group of one or more interconnected nodes (called a subnet) to which the primary address is redirected.
Back to Nortel-Magellan-Passport-CallRedirectionMIB MIB page.
IPHost Network monitor allows you to monitor crsPAddrSRidMidRoutingId 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.