With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
lpOamEnetMacAddress
lp Oam Enet Mac Address
This attribute indicates the medium access controller (MAC) address automatically assigned to the OAM Ethernet port by the system. The MAC address is displayed in canonical format.
Back to Nortel-Magellan-Passport-OamEthernetMIB MIB page.
IPHost Network monitor allows you to monitor lpOamEnetMacAddress 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 multiplexers right now.