With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
gvcIfDlciLocalDeviceMac
General Vc Interface Dlci Local Device Mac
This attribute indicates the MAC of the device located on this side of the VC, normally the host device. This address is inserted in the Destination Address (DA) field of the 802.5 frames sent, typically to a Token Ring interface. This address is expected in the SA field of the frames received from the local LAN. When this attribute is not empty All Route Explorer (ARE) and Single Route Explorer (SRE) frames received from the local LAN must have the SA field matching it, otherwise they are discarded.
Back to Nortel-Magellan-Passport-GeneralVcInterfaceMIB MIB page.
IPHost Network monitor allows you to monitor gvcIfDlciLocalDeviceMac 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 secure routers right now.