With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vrPpSrseDownTime
Virtual Router Passport Srse Down Time
This attribute specifies the accumulated down time of this bridge port since the last reset occurred.
Back to Nortel-Magellan-Passport-BridgeMIB MIB page.
IPHost Network monitor allows you to monitor vrPpSrseDownTime 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 secure routers right now.