With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
caqPbfMacAddress
Cisco Access Control List QoS Pbf Mac Address
1.3.6.1.4.1.9.9.179.1.6.2
Indicates the PBF engine MAC address. When the value of caqPbfStatus is msfcPresent(3), this object cannot be configured and its previously configured value is ignored.
Back to CISCO-CATOS-ACL-QOS-MIB MIB page.
IPHost Network monitor allows you to monitor caqPbfMacAddress on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco wireless switches right now.