With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vrBrBridgeAddress
Virtual Router Br Bridge Address
This attribute represents the Mac address for the bridge. This address is used when this bridge must be referred to in a unique manner. It is used to form the bridge identifier, used by the spanning tree protocol, by concatenating it with the attribute bridgePriority under the component SpanningTreeProtocol.
Back to Nortel-Magellan-Passport-BridgeMIB MIB page.
IPHost Network monitor allows you to monitor vrBrBridgeAddress 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.