With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
lecCurrArpEntries
LAN Emulation Client Curr Arp Entries
This attribute counts the current number of entries that this LEC has in its LE ARP table.
Back to Nortel-Magellan-Passport-LaneClientMIB MIB page.
IPHost Network monitor allows you to monitor lecCurrArpEntries 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 modems right now.