With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
lecLeArpIsRemoteAddress
LAN Emulation Client Le Arp Is Remote Address
This attribute indicates whether this entry is for a local or remote MAC address. In this context, 'local' means a MAC address that is local to a LEC, and 'remote' means a MAC address for which the LEC is proxy. If yes, the address is believed to be remote, or its local/remote status is unknown. If no, the address is believed to be local; that is, registered with the LES by the LEC whose ATM address is atmAddress.
Back to Nortel-Magellan-Passport-LaneClientMIB MIB page.
IPHost Network monitor allows you to monitor lecLeArpIsRemoteAddress 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.