With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vrIpxSapAgeMultiplier
Virtual Router Ipx Sap Age Multiplier
After this many SAP Update intervals unrefreshed SAP information is considered expired.
Back to Nortel-Magellan-Passport-IpxMIB MIB page.
IPHost Network monitor allows you to monitor vrIpxSapAgeMultiplier 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.