With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vrBrSrbIndex
Virtual Router Br Srb Index
This variable represents the index for the vrBrSrb tables.
Back to Nortel-Magellan-Passport-BridgeMIB MIB page.
IPHost Network monitor allows you to monitor vrBrSrbIndex 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.