With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vrIpArpHostEncap
Virtual Router Ip Arp Host Encap
Specify the encapsulation type for the host. The value for this attribute should only be specified for the hosts on the ethernet media. If a value of auto is specified, the application based on the media will determine the proper applicable encapsulation type.
Back to Nortel-Magellan-Passport-IpMIB MIB page.
IPHost Network monitor allows you to monitor vrIpArpHostEncap 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 speech servers right now.