With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cbQosTSStatsCurrentQSize
Cisco Class Based Qos Traffic-Shaping Statistics Current Q Size
1.3.6.1.4.1.9.9.166.1.19.1.1.14
This object indicates the current traffic-shaping queue depth in packets.
Back to CISCO-CLASS-BASED-QOS-MIB MIB page.
IPHost Network monitor allows you to monitor cbQosTSStatsCurrentQSize on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.