With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
appnNnTgPropagationDelay
appn Nn Tg Propagation Delay
The propagation delay is the length of time that it takes for a signal to propagate from one end of the transmission group to the other. Typical values are: minimum - minimum negligible - 400 microsec terrestrial - 10 msec packetSwitched - 150 msec long - 300 msec
Back to Nortel-Magellan-Passport-AppnMIB MIB page.
IPHost Network monitor allows you to monitor appnNnTgPropagationDelay 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.