With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
bscExtAddressTable
Cisco BSC Ext Address Table
1.3.6.1.4.1.9.9.36.1.3.1
List of all addresses configured by the bsc extended-address command. This applies only to interfaces with an ifType of 'bsc'. The address entries must be unique per interface.
Back to CISCO-BSC-MIB MIB page.
IPHost Network monitor allows you to monitor bscExtAddressTable on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.