With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
bcpConfigMacAddress
Cisco Bridge Control Protocol Config Mac Address
1.3.6.1.4.1.9.9.275.1.2.1.9
This value is meaningful only when the local BCP entity has negotiated the MAC-Address configuration option, which means the value of bcpConfigMacAddressControl is enabled(1). If it is non-zero format, the local BCP get its MAC address announced. It is represented in IEEE 802.1 Canonical format. If it is in zero format, i.e. 00-00-00-00-00-00 then the implementation of the system wishes to have a MAC address assigned.
Back to CISCO-BCP-MIB MIB page.
IPHost Network monitor allows you to monitor bcpConfigMacAddress 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.