With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vrPpSrBpDelayExceededDiscards
Virtual Router Passport Sr Bridge Port Delay Exceeded Discards
This attribute is indicative of the number of frames that were discarded because the time taken to process these frames exceeded the transit delay allowed for this bridge unit. This attribute is not supported by bridging and will always have a value of 0.
Back to Nortel-Magellan-Passport-BridgeMIB MIB page.
IPHost Network monitor allows you to monitor vrPpSrBpDelayExceededDiscards 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.