With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
caqAdjSrcMacAddress
Cisco Access Control List QoS Adjacency Source Mac Address
1.3.6.1.4.1.9.9.179.1.6.3.1.4
Indicates the adjacency source MAC address. If this object is not configured, it will contain the MAC address of the PBF engine which is denoted by caqPbfMacAddress object.
Back to CISCO-CATOS-ACL-QOS-MIB MIB page.
IPHost Network monitor allows you to monitor caqAdjSrcMacAddress 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.