With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ciscoSwitchQosIfStatsExtGroup
cisco Switch Qos If Stats Ext Group
1.3.6.1.4.1.9.9.580.2.2.18
A collection of objects which provides additional interface QoS statistics information.
Back to CISCO-SWITCH-QOS-MIB MIB page.
IPHost Network monitor allows you to monitor ciscoSwitchQosIfStatsExtGroup 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.