With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vrSnaMacCacheMisses
Virtual Router Sna Mac Cache Misses
This attribute indicates the number of times a cache search for a particular MAC address resulted in failure.
Back to Nortel-Magellan-Passport-Nortel-Magellan-Passport-SnaMIB MIB page.
IPHost Network monitor allows you to monitor vrSnaMacCacheMisses 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 multiplexers right now.