With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vrIfTableEntryIfPhysicalAddress
Virtual Router If Table Entry If Physical Address
1.3.6.1.4.1.562.2.4.1.100.10.10.1.21
The interface's address at the protocol layer immediately `below' the network layer in the protocol stack. For interfaces which do not have such an address (e.g., a serial line), this object should be an octet string of zero length.
Back to Nortel-Magellan-Passport-VirtualRouterMIB MIB page.
IPHost Network monitor allows you to monitor vrIfTableEntryIfPhysicalAddress 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.